2 * Copyright (c) 2007-2008, Novell Inc.
4 * This program is licensed under the BSD license, read LICENSE.BSD
5 * for further information
11 * SAT based dependency solver
21 #include "solver_private.h"
27 #include "solverdebug.h"
29 #include "linkedpkg.h"
31 #define RULES_BLOCK 63
34 /************************************************************************/
37 * enable/disable learnt rules
39 * we have enabled or disabled some of our rules. We now reenable all
40 * of our learnt rules except the ones that were learnt from rules that
44 enabledisablelearntrules(Solver *solv)
46 Pool *pool = solv->pool;
51 POOL_DEBUG(SOLV_DEBUG_SOLUTIONS, "enabledisablelearntrules called\n");
52 for (i = solv->learntrules, r = solv->rules + i; i < solv->nrules; i++, r++)
54 whyp = solv->learnt_pool.elements + solv->learnt_why.elements[i - solv->learntrules];
55 while ((why = *whyp++) != 0)
57 assert(why > 0 && why < i);
58 if (solv->rules[why].d < 0)
61 /* why != 0: we found a disabled rule, disable the learnt rule */
64 IF_POOLDEBUG (SOLV_DEBUG_SOLUTIONS)
66 POOL_DEBUG(SOLV_DEBUG_SOLUTIONS, "disabling ");
67 solver_printruleclass(solv, SOLV_DEBUG_SOLUTIONS, r);
69 solver_disablerule(solv, r);
71 else if (!why && r->d < 0)
73 IF_POOLDEBUG (SOLV_DEBUG_SOLUTIONS)
75 POOL_DEBUG(SOLV_DEBUG_SOLUTIONS, "re-enabling ");
76 solver_printruleclass(solv, SOLV_DEBUG_SOLUTIONS, r);
78 solver_enablerule(solv, r);
85 * make assertion rules into decisions
87 * Go through rules and add direct assertions to the decisionqueue.
88 * If we find a conflict, disable rules and add them to problem queue.
92 makeruledecisions(Solver *solv, int disablerules)
94 Pool *pool = solv->pool;
101 int havedisabled = 0;
104 /* The system solvable is always installed first */
105 assert(solv->decisionq.count == 0);
106 queue_push(&solv->decisionq, SYSTEMSOLVABLE);
107 queue_push(&solv->decisionq_why, 0);
108 queue_push2(&solv->decisionq_reason, 0, 0);
109 solv->decisionmap[SYSTEMSOLVABLE] = 1; /* installed at level '1' */
111 decisionstart = solv->decisionq.count;
114 /* if we needed to re-run, back up decisions to decisionstart */
115 while (solv->decisionq.count > decisionstart)
117 v = solv->decisionq.elements[--solv->decisionq.count];
118 --solv->decisionq_why.count;
120 solv->decisionmap[vv] = 0;
123 /* note that the ruleassertions queue is ordered */
124 for (ii = 0; ii < solv->ruleassertions.count; ii++)
126 ri = solv->ruleassertions.elements[ii];
127 r = solv->rules + ri;
129 if (havedisabled && ri >= solv->learntrules)
131 /* just started with learnt rule assertions. If we have disabled
132 * some rules, adapt the learnt rule status */
133 enabledisablelearntrules(solv);
137 if (r->d < 0 || !r->p || r->w2) /* disabled, dummy or no assertion */
140 /* do weak rules in phase 2 */
141 if (ri < solv->learntrules && solv->weakrulemap.size && MAPTST(&solv->weakrulemap, ri))
147 if (!solv->decisionmap[vv]) /* if not yet decided */
149 queue_push(&solv->decisionq, v);
150 queue_push(&solv->decisionq_why, ri);
151 solv->decisionmap[vv] = v > 0 ? 1 : -1;
152 IF_POOLDEBUG (SOLV_DEBUG_PROPAGATE)
154 Solvable *s = solv->pool->solvables + vv;
156 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "conflicting %s (assertion)\n", pool_solvable2str(solv->pool, s));
158 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "installing %s (assertion)\n", pool_solvable2str(solv->pool, s));
163 /* check against previous decision: is there a conflict? */
164 if (v > 0 && solv->decisionmap[vv] > 0) /* ok to install */
166 if (v < 0 && solv->decisionmap[vv] < 0) /* ok to remove */
172 * The rule (r) we're currently processing says something
173 * different (v = r->p) than a previous decision (decisionmap[abs(v)])
177 if (ri >= solv->learntrules)
179 /* conflict with a learnt rule */
180 /* can happen when packages cannot be installed for multiple reasons. */
181 /* we disable the learnt rule in this case */
182 /* (XXX: we should really do something like analyze_unsolvable_rule here!) */
183 solver_disablerule(solv, r);
187 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "ANALYZE UNSOLVABLE ASSERTION ----------------------\n");
188 assert(ri >= solv->pkgrules_end); /* must not have a conflict in the pkg rules! */
191 * find the decision which is the "opposite" of the rule
193 for (i = 0; i < solv->decisionq.count; i++)
194 if (solv->decisionq.elements[i] == -v)
196 assert(i < solv->decisionq.count); /* assert that we found it */
197 if (v == -SYSTEMSOLVABLE)
201 ori = solv->decisionq_why.elements[i]; /* the conflicting rule */
209 oldproblemcount = solv->problems.count;
210 queue_push(&solv->problems, 0); /* start problem */
211 if (ori < solv->pkgrules_end)
213 /* easy: conflict with system solvable or pkg rule */
214 assert(v > 0 || v == -SYSTEMSOLVABLE);
215 IF_POOLDEBUG (SOLV_DEBUG_UNSOLVABLE)
218 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "conflict with pkg rule, disabling rule #%d\n", ri);
220 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "conflict with system solvable, disabling rule #%d\n", ri);
221 solver_printruleclass(solv, SOLV_DEBUG_UNSOLVABLE, solv->rules + ri);
223 solver_printruleclass(solv, SOLV_DEBUG_UNSOLVABLE, solv->rules + ori);
225 solver_recordproblem(solv, ri);
226 if (ri >= solv->featurerules && ri < solv->updaterules_end)
231 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "conflicting update/job assertions over literal %d\n", vv);
233 * push all of our rules (can only be feature or job rules)
234 * asserting this literal on the problem stack
236 for (i = solv->pkgrules_end, rr = solv->rules + i; i < solv->learntrules; i++, rr++)
238 if (rr->d < 0 /* disabled */
239 || rr->w2) /* or no assertion */
241 if (rr->p != vv /* not affecting the literal */
244 if (solv->weakrulemap.size && MAPTST(&solv->weakrulemap, i)) /* weak: silently ignore */
247 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, " - disabling rule #%d\n", i);
248 solver_printruleclass(solv, SOLV_DEBUG_UNSOLVABLE, solv->rules + i);
249 solver_recordproblem(solv, i);
250 if (i >= solv->featurerules && i < solv->updaterules_end)
254 queue_push(&solv->problems, 0); /* finish problem */
256 /* try autouninstall if requested */
259 if (solv->allowuninstall || solv->allowuninstall_all || solv->allowuninstallmap.size)
260 if (solver_autouninstall(solv, oldproblemcount) != 0)
262 solv->problems.count = oldproblemcount;
264 break; /* start over */
268 /* record the proof if requested */
271 solv->problems.elements[oldproblemcount] = solv->learnt_pool.count;
272 queue_push(&solv->learnt_pool, ri);
274 queue_push(&solv->learnt_pool, ori);
275 queue_push(&solv->learnt_pool, 0);
280 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "UNSOLVABLE\n");
283 /* disable all problem rules */
284 solver_disableproblemset(solv, oldproblemcount);
286 break; /* start over */
288 if (ii < solv->ruleassertions.count)
292 * phase 2: now do the weak assertions
294 if (!solv->weakrulemap.size)
295 break; /* no weak rules, no phase 2 */
296 for (ii = 0; ii < solv->ruleassertions.count; ii++)
298 ri = solv->ruleassertions.elements[ii];
299 r = solv->rules + ri;
300 if (r->d < 0 || r->w2) /* disabled or no assertion */
302 if (ri >= solv->learntrules || !MAPTST(&solv->weakrulemap, ri)) /* skip non-weak */
307 if (!solv->decisionmap[vv]) /* if not yet decided */
309 queue_push(&solv->decisionq, v);
310 queue_push(&solv->decisionq_why, r - solv->rules);
311 solv->decisionmap[vv] = v > 0 ? 1 : -1;
312 IF_POOLDEBUG (SOLV_DEBUG_PROPAGATE)
314 Solvable *s = solv->pool->solvables + vv;
316 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "conflicting %s (weak assertion)\n", pool_solvable2str(solv->pool, s));
318 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "installing %s (weak assertion)\n", pool_solvable2str(solv->pool, s));
322 /* check against previous decision: is there a conflict? */
323 if (v > 0 && solv->decisionmap[vv] > 0)
325 if (v < 0 && solv->decisionmap[vv] < 0)
328 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "assertion conflict, but I am weak, disabling ");
329 solver_printruleclass(solv, SOLV_DEBUG_UNSOLVABLE, r);
330 solver_fixproblem(solv, ri);
332 break; /* start over */
334 if (ii == solv->ruleassertions.count)
335 break; /* finished! */
337 return 1; /* the new level */
341 /********************************************************************/
345 /*-------------------------------------------------------------------
348 * initial setup for all watches
352 makewatches(Solver *solv)
356 int nsolvables = solv->pool->nsolvables;
358 solv_free(solv->watches);
359 /* lower half for removals, upper half for installs */
360 solv->watches = solv_calloc(2 * nsolvables, sizeof(Id));
361 for (i = 1, r = solv->rules + solv->nrules - 1; i < solv->nrules; i++, r--)
363 if (!r->w2) /* assertions do not need watches */
366 /* see addwatches_rule(solv, r) */
367 r->n1 = solv->watches[nsolvables + r->w1];
368 solv->watches[nsolvables + r->w1] = r - solv->rules;
370 r->n2 = solv->watches[nsolvables + r->w2];
371 solv->watches[nsolvables + r->w2] = r - solv->rules;
376 /*-------------------------------------------------------------------
378 * add watches (for a new learned rule)
379 * sets up watches for a single rule
381 * see also makewatches() above.
385 addwatches_rule(Solver *solv, Rule *r)
387 int nsolvables = solv->pool->nsolvables;
389 r->n1 = solv->watches[nsolvables + r->w1];
390 solv->watches[nsolvables + r->w1] = r - solv->rules;
392 r->n2 = solv->watches[nsolvables + r->w2];
393 solv->watches[nsolvables + r->w2] = r - solv->rules;
397 /********************************************************************/
403 /* shortcuts to check if a literal (positive or negative) assignment
404 * evaluates to 'true' or 'false'
406 #define DECISIONMAP_TRUE(p) ((p) > 0 ? (decisionmap[p] > 0) : (decisionmap[-p] < 0))
407 #define DECISIONMAP_FALSE(p) ((p) > 0 ? (decisionmap[p] < 0) : (decisionmap[-p] > 0))
408 #define DECISIONMAP_UNDEF(p) (decisionmap[(p) > 0 ? (p) : -(p)] == 0)
410 /*-------------------------------------------------------------------
414 * make decision and propagate to all rules
416 * Evaluate each term affected by the decision (linked through watches).
417 * If we find unit rules we make new decisions based on them.
419 * return : 0 = everything is OK
420 * rule = conflict found in this rule
424 propagate(Solver *solv, int level)
426 Pool *pool = solv->pool;
427 Id *rp, *next_rp; /* rule pointer, next rule pointer in linked list */
429 Id p, pkg, other_watch;
431 Id *decisionmap = solv->decisionmap;
432 Id *watches = solv->watches + pool->nsolvables; /* place ptr in middle */
434 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "----- propagate level %d -----\n", level);
436 /* foreach non-propagated decision */
437 while (solv->propagate_index < solv->decisionq.count)
440 * 'pkg' was just decided
441 * negate because our watches trigger if literal goes FALSE
443 pkg = -solv->decisionq.elements[solv->propagate_index++];
445 IF_POOLDEBUG (SOLV_DEBUG_PROPAGATE)
447 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "propagate decision %d:", -pkg);
448 solver_printruleelement(solv, SOLV_DEBUG_PROPAGATE, 0, -pkg);
451 /* foreach rule where 'pkg' is now FALSE */
452 for (rp = watches + pkg; *rp; rp = next_rp)
454 r = solv->rules + *rp;
457 /* rule is disabled, goto next */
465 IF_POOLDEBUG (SOLV_DEBUG_WATCHES)
467 POOL_DEBUG(SOLV_DEBUG_WATCHES, " watch triggered ");
468 solver_printrule(solv, SOLV_DEBUG_WATCHES, r);
472 * 'pkg' was just decided (was set to FALSE), so this rule
475 /* find the other watch */
488 * if the other watch is true we have nothing to do
490 if (DECISIONMAP_TRUE(other_watch))
494 * The other literal is FALSE or UNDEF
500 /* Not a binary clause, try to move our watch.
502 * Go over all literals and find one that is
506 * (TRUE is also ok, in that case the rule is fulfilled)
507 * As speed matters here we do not use the FOR_RULELITERALS
510 if (r->p /* we have a 'p' */
511 && r->p != other_watch /* which is not watched */
512 && !DECISIONMAP_FALSE(r->p)) /* and not FALSE */
516 else /* go find a 'd' to make 'true' */
519 we just iterate sequentially, doing it in another order just changes the order of decisions, not the decisions itself
521 for (dp = pool->whatprovidesdata + r->d; (p = *dp++) != 0;)
523 if (p != other_watch /* which is not watched */
524 && !DECISIONMAP_FALSE(p)) /* and not FALSE */
532 * if we found some p that is UNDEF or TRUE, move
535 IF_POOLDEBUG (SOLV_DEBUG_WATCHES)
538 POOL_DEBUG(SOLV_DEBUG_WATCHES, " -> move w%d to %s\n", (pkg == r->w1 ? 1 : 2), pool_solvid2str(pool, p));
540 POOL_DEBUG(SOLV_DEBUG_WATCHES, " -> move w%d to !%s\n", (pkg == r->w1 ? 1 : 2), pool_solvid2str(pool, -p));
556 watches[p] = r - solv->rules;
559 /* search failed, thus all unwatched literals are FALSE */
564 * unit clause found, set literal other_watch to TRUE
567 if (DECISIONMAP_FALSE(other_watch)) /* check if literal is FALSE */
568 return r; /* eek, a conflict! */
570 IF_POOLDEBUG (SOLV_DEBUG_PROPAGATE)
572 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, " unit ");
573 solver_printrule(solv, SOLV_DEBUG_PROPAGATE, r);
577 decisionmap[other_watch] = level; /* install! */
579 decisionmap[-other_watch] = -level; /* remove! */
581 queue_push(&solv->decisionq, other_watch);
582 queue_push(&solv->decisionq_why, r - solv->rules);
584 IF_POOLDEBUG (SOLV_DEBUG_PROPAGATE)
587 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, " -> decided to install %s\n", pool_solvid2str(pool, other_watch));
589 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, " -> decided to conflict %s\n", pool_solvid2str(pool, -other_watch));
592 } /* foreach rule involving 'pkg' */
594 } /* while we have non-decided decisions */
596 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "----- propagate end -----\n");
598 return 0; /* all is well */
602 /********************************************************************/
605 /*-------------------------------------------------------------------
608 * revert decisionq to a level
612 revert(Solver *solv, int level)
614 Pool *pool = solv->pool;
616 while (solv->decisionq.count)
618 v = solv->decisionq.elements[solv->decisionq.count - 1];
620 if (solv->decisionmap[vv] <= level && solv->decisionmap[vv] >= -level)
622 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "reverting decision %d at %d\n", v, solv->decisionmap[vv]);
623 solv->decisionmap[vv] = 0;
624 solv->decisionq.count--;
625 solv->decisionq_why.count--;
626 solv->propagate_index = solv->decisionq.count;
628 while (solv->branches.count && solv->branches.elements[solv->branches.count - 1] >= level)
629 solv->branches.count -= solv->branches.elements[solv->branches.count - 2];
630 if (solv->recommends_index > solv->decisionq.count)
631 solv->recommends_index = -1; /* rebuild recommends/suggests maps */
632 solv->decisionq_reason.count = level + 1;
635 /*-------------------------------------------------------------------
637 * watch2onhighest - put watch2 on literal with highest level
641 watch2onhighest(Solver *solv, Rule *r)
646 d = r->d < 0 ? -r->d - 1 : r->d;
648 return; /* binary rule, both watches are set */
649 dp = solv->pool->whatprovidesdata + d;
650 while ((v = *dp++) != 0)
652 l = solv->decisionmap[v < 0 ? -v : v];
664 /*-------------------------------------------------------------------
671 analyze(Solver *solv, int level, Rule *c, Rule **lrp)
673 Pool *pool = solv->pool;
678 Map seen; /* global? */
679 Id p = 0, pp, v, vv, why;
681 int num = 0, l1num = 0;
682 int learnt_why = solv->learnt_pool.count;
683 Id *decisionmap = solv->decisionmap;
685 queue_init_buffer(&q, q_buf, sizeof(q_buf)/sizeof(*q_buf));
687 POOL_DEBUG(SOLV_DEBUG_ANALYZE, "ANALYZE at %d ----------------------\n", level);
688 map_init(&seen, pool->nsolvables);
689 idx = solv->decisionq.count;
692 IF_POOLDEBUG (SOLV_DEBUG_ANALYZE)
693 solver_printruleclass(solv, SOLV_DEBUG_ANALYZE, c);
694 queue_push(&solv->learnt_pool, c - solv->rules);
695 FOR_RULELITERALS(v, pp, c)
697 if (DECISIONMAP_TRUE(v)) /* the one true literal */
700 if (MAPTST(&seen, vv))
702 MAPSET(&seen, vv); /* mark that we also need to look at this literal */
703 l = solv->decisionmap[vv];
707 l1num++; /* need to do this one in level1 pass */
709 num++; /* need to do this one as well */
712 queue_push(&q, v); /* not level1 or conflict level, add to new rule */
718 if (!num && !--l1num)
719 break; /* all literals done */
721 /* find the next literal to investigate */
722 /* (as num + l1num > 0, we know that we'll always find one) */
726 v = solv->decisionq.elements[--idx];
728 if (MAPTST(&seen, vv))
733 if (num && --num == 0)
735 /* done with normal literals, now start level 1 literal processing */
736 p = -v; /* so that v doesn't get lost */
739 POOL_DEBUG(SOLV_DEBUG_ANALYZE, "got %d involved level 1 decisions\n", l1num);
740 /* clear non-l1 bits from seen map */
741 for (i = 0; i < q.count; i++)
744 MAPCLR(&seen, v > 0 ? v : -v);
746 /* only level 1 marks left in seen map */
747 l1num++; /* as l1retry decrements it */
751 why = solv->decisionq_why.elements[idx];
752 if (why <= 0) /* just in case, maybe for SYSTEMSOLVABLE */
754 c = solv->rules + why;
758 assert(rlevel > 0 && rlevel < level);
759 IF_POOLDEBUG (SOLV_DEBUG_ANALYZE)
761 POOL_DEBUG(SOLV_DEBUG_ANALYZE, "learned rule for level %d (am %d)\n", rlevel, level);
762 solver_printruleelement(solv, SOLV_DEBUG_ANALYZE, 0, p);
763 for (i = 0; i < q.count; i++)
764 solver_printruleelement(solv, SOLV_DEBUG_ANALYZE, 0, q.elements[i]);
766 /* push end marker on learnt reasons stack */
767 queue_push(&solv->learnt_pool, 0);
768 solv->stats_learned++;
770 POOL_DEBUG(SOLV_DEBUG_ANALYZE, "reverting decisions (level %d -> %d)\n", level, rlevel);
775 Id d = q.count ? q.elements[0] : 0;
777 r = solver_addrule(solv, p, d, 0);
781 Id d = pool_queuetowhatprovides(pool, &q);
783 r = solver_addrule(solv, p, 0, d);
785 assert(solv->learnt_why.count == (r - solv->rules) - solv->learntrules);
786 queue_push(&solv->learnt_why, learnt_why);
790 watch2onhighest(solv, r);
791 addwatches_rule(solv, r);
795 /* rule is an assertion */
796 queue_push(&solv->ruleassertions, r - solv->rules);
803 /*-------------------------------------------------------------------
807 * reset all solver decisions
808 * called after rules have been enabled/disabled
812 solver_reset(Solver *solv)
817 /* rewind all decisions */
818 for (i = solv->decisionq.count - 1; i >= 0; i--)
820 v = solv->decisionq.elements[i];
821 solv->decisionmap[v > 0 ? v : -v] = 0;
823 queue_empty(&solv->decisionq_why);
824 queue_empty(&solv->decisionq);
825 queue_empty(&solv->decisionq_reason);
826 solv->recommends_index = -1;
827 solv->propagate_index = 0;
828 queue_empty(&solv->branches);
830 /* adapt learnt rule status to new set of enabled/disabled rules */
831 enabledisablelearntrules(solv);
835 queue_contains(Queue *q, Id id)
838 for (i = 0; i < q->count; i++)
839 if (q->elements[i] == id)
845 disable_recommendsrules(Solver *solv, Queue *weakq)
847 Pool *pool = solv->pool;
849 for (i = 0; i < weakq->count; i++)
851 rid = weakq->elements[i];
852 if ((rid >= solv->recommendsrules && rid < solv->recommendsrules_end) || queue_contains(solv->recommendsruleq, rid))
854 Rule *r = solv->rules + rid;
857 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "disabling ");
858 solver_printruleclass(solv, SOLV_DEBUG_UNSOLVABLE, r);
859 solver_disablerule(solv, r);
865 /*-------------------------------------------------------------------
867 * analyze_unsolvable_rule
869 * recursion helper used by analyze_unsolvable
873 analyze_unsolvable_rule(Solver *solv, Rule *r, Queue *weakq, Map *rseen)
875 Pool *pool = solv->pool;
877 Id why = r - solv->rules;
879 IF_POOLDEBUG (SOLV_DEBUG_UNSOLVABLE)
880 solver_printruleclass(solv, SOLV_DEBUG_UNSOLVABLE, r);
881 if (solv->learntrules && why >= solv->learntrules)
883 if (MAPTST(rseen, why - solv->learntrules))
885 MAPSET(rseen, why - solv->learntrules);
886 for (i = solv->learnt_why.elements[why - solv->learntrules]; solv->learnt_pool.elements[i]; i++)
887 if (solv->learnt_pool.elements[i] > 0)
888 analyze_unsolvable_rule(solv, solv->rules + solv->learnt_pool.elements[i], weakq, rseen);
891 if (solv->weakrulemap.size && MAPTST(&solv->weakrulemap, why) && weakq)
892 queue_push(weakq, why);
893 /* add non-pkg rules to problem and disable */
894 if (why >= solv->pkgrules_end)
895 solver_recordproblem(solv, why);
898 /* fix a problem by disabling one or more weak rules */
900 disable_weakrules(Solver *solv, Queue *weakq)
902 Pool *pool = solv->pool;
905 for (i = 0; i < weakq->count; i++)
906 if (weakq->elements[i] > lastweak)
907 lastweak = weakq->elements[i];
908 if (lastweak >= solv->recommendsrules && lastweak < solv->recommendsrules_end)
911 for (i = 0; i < weakq->count; i++)
912 if (weakq->elements[i] < solv->recommendsrules && weakq->elements[i] > lastweak)
913 lastweak = weakq->elements[i];
914 if (lastweak < solv->pkgrules_end)
916 disable_recommendsrules(solv, weakq);
920 if (lastweak < solv->pkgrules_end && solv->strongrecommends && solv->recommendsruleq && queue_contains(solv->recommendsruleq, lastweak))
922 disable_recommendsrules(solv, weakq);
925 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "disabling ");
926 solver_printruleclass(solv, SOLV_DEBUG_UNSOLVABLE, solv->rules + lastweak);
927 /* choice rules need special handling */
928 if (lastweak >= solv->choicerules && lastweak < solv->choicerules_end)
929 solver_disablechoicerules(solv, solv->rules + lastweak);
931 solver_fixproblem(solv, lastweak);
934 /*-------------------------------------------------------------------
936 * analyze_unsolvable (called from setpropagatelearn)
938 * We know that the problem is not solvable. Record all involved
939 * rules (i.e. the "proof") into solv->learnt_pool.
940 * Record the learnt pool index and all non-pkg rules into
941 * solv->problems. (Our solutions to fix the problems are to
942 * disable those rules.)
944 * If the proof contains at least one weak rule, we disable the
947 * Otherwise we return -1 if disablerules is not set or disable
948 * _all_ of the problem rules and return 0.
950 * return: 0 - disabled some rules, try again
955 analyze_unsolvable(Solver *solv, Rule *cr, int disablerules)
957 Pool *pool = solv->pool;
959 Map involved; /* global to speed things up? */
964 Id *decisionmap = solv->decisionmap;
966 int oldlearntpoolcount;
967 int record_proof = 1;
969 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "ANALYZE UNSOLVABLE ----------------------\n");
970 solv->stats_unsolvable++;
971 oldproblemcount = solv->problems.count;
972 oldlearntpoolcount = solv->learnt_pool.count;
974 /* make room for proof index */
975 /* must update it later, as analyze_unsolvable_rule would confuse
976 * it with a rule index if we put the real value in already */
977 queue_push(&solv->problems, 0);
980 map_init(&involved, pool->nsolvables);
981 map_init(&rseen, solv->learntrules ? solv->nrules - solv->learntrules : 0);
984 queue_push(&solv->learnt_pool, r - solv->rules);
985 analyze_unsolvable_rule(solv, r, &weakq, &rseen);
986 FOR_RULELITERALS(v, pp, r)
988 if (DECISIONMAP_TRUE(v)) /* the one true literal */
991 MAPSET(&involved, vv);
993 idx = solv->decisionq.count;
996 v = solv->decisionq.elements[--idx];
998 if (!MAPTST(&involved, vv) || vv == SYSTEMSOLVABLE)
1000 why = solv->decisionq_why.elements[idx];
1003 queue_push(&solv->learnt_pool, why);
1004 r = solv->rules + why;
1005 analyze_unsolvable_rule(solv, r, &weakq, &rseen);
1006 FOR_RULELITERALS(v, pp, r)
1008 if (DECISIONMAP_TRUE(v)) /* the one true literal */
1010 vv = v > 0 ? v : -v;
1011 MAPSET(&involved, vv);
1014 map_free(&involved);
1016 queue_push(&solv->problems, 0); /* mark end of this problem */
1020 /* revert problems */
1021 solv->problems.count = oldproblemcount;
1022 solv->learnt_pool.count = oldlearntpoolcount;
1023 /* disable some weak rules */
1024 disable_weakrules(solv, &weakq);
1031 if (solv->allowuninstall || solv->allowuninstall_all || solv->allowuninstallmap.size)
1032 if (solver_autouninstall(solv, oldproblemcount) != 0)
1034 solv->problems.count = oldproblemcount;
1035 solv->learnt_pool.count = oldlearntpoolcount;
1043 queue_push(&solv->learnt_pool, 0);
1044 solv->problems.elements[oldproblemcount] = oldlearntpoolcount;
1047 /* + 2: index + trailing zero */
1048 if (disablerules && oldproblemcount + 2 < solv->problems.count)
1050 solver_disableproblemset(solv, oldproblemcount);
1051 /* XXX: might want to enable all weak rules again */
1055 POOL_DEBUG(SOLV_DEBUG_UNSOLVABLE, "UNSOLVABLE\n");
1060 /*-------------------------------------------------------------------
1064 * add free decision (solvable to install) to decisionq
1065 * increase level and propagate decision
1066 * return if no conflict.
1068 * in conflict case, analyze conflict rule, add resulting
1069 * rule to learnt rule set, make decision from learnt
1070 * rule (always unit) and re-propagate.
1072 * returns the new solver level or -1 if unsolvable
1077 setpropagatelearn(Solver *solv, int level, Id decision, int disablerules, Id ruleid, Id reason)
1079 Pool *pool = solv->pool;
1086 solv->decisionmap[decision] = level;
1088 solv->decisionmap[-decision] = -level;
1089 queue_push(&solv->decisionq, decision);
1090 queue_push(&solv->decisionq_why, -ruleid); /* <= 0 -> free decision */
1091 queue_push(&solv->decisionq_reason, reason);
1093 assert(ruleid >= 0 && level > 0);
1096 r = propagate(solv, level);
1100 return analyze_unsolvable(solv, r, disablerules);
1101 POOL_DEBUG(SOLV_DEBUG_ANALYZE, "conflict with rule #%d\n", (int)(r - solv->rules));
1102 level = analyze(solv, level, r, &lr);
1103 /* the new rule is unit by design */
1105 solv->decisionmap[decision > 0 ? decision : -decision] = decision > 0 ? level : -level;
1106 queue_push(&solv->decisionq, decision);
1107 queue_push(&solv->decisionq_why, lr - solv->rules);
1108 IF_POOLDEBUG (SOLV_DEBUG_ANALYZE)
1110 POOL_DEBUG(SOLV_DEBUG_ANALYZE, "decision: ");
1111 solver_printruleelement(solv, SOLV_DEBUG_ANALYZE, 0, decision);
1112 POOL_DEBUG(SOLV_DEBUG_ANALYZE, "new rule: ");
1113 solver_printrule(solv, SOLV_DEBUG_ANALYZE, lr);
1120 reorder_dq_for_future_installed(Solver *solv, int level, Queue *dq)
1122 Pool *pool = solv->pool;
1123 int i, j, haveone = 0, dqcount = dq->count;
1124 int decisionqcount = solv->decisionq.count;
1128 /* at the time we process jobrules the installed packages are not kept yet */
1129 /* reorder so that "future-supplemented" packages come first */
1130 FOR_REPO_SOLVABLES(solv->installed, p, s)
1132 if (MAPTST(&solv->noupdate, p - solv->installed->start))
1134 if (solv->decisionmap[p] == 0)
1136 if (s->recommends || s->suggests)
1137 queue_push(&solv->decisionq, p);
1138 solv->decisionmap[p] = level + 1;
1144 policy_update_recommendsmap(solv);
1145 for (i = 0; i < dqcount; i++)
1147 p = dq->elements[i];
1148 if (!(pool->solvables[p].repo == solv->installed || MAPTST(&solv->suggestsmap, p) || solver_is_enhancing(solv, pool->solvables + p)))
1151 dq->elements[i] = 0;
1154 dqcount = dq->count;
1155 for (i = 0; i < dqcount; i++)
1157 p = dq->elements[i];
1158 if (p && !(pool->solvables[p].repo == solv->installed || MAPTST(&solv->recommendsmap, p) || solver_is_supplementing(solv, pool->solvables + p)))
1161 dq->elements[i] = 0;
1164 for (i = j = 0; i < dq->count; i++)
1165 if (dq->elements[i])
1166 dq->elements[j++] = dq->elements[i];
1167 queue_truncate(dq, j);
1168 FOR_REPO_SOLVABLES(solv->installed, p, s)
1169 if (solv->decisionmap[p] == level + 1)
1170 solv->decisionmap[p] = 0;
1171 if (solv->decisionq.count != decisionqcount)
1173 solv->recommends_index = -1;
1174 queue_truncate(&solv->decisionq, decisionqcount);
1176 /* but obey favored maps */
1177 policy_prefer_favored(solv, dq);
1180 /*-------------------------------------------------------------------
1185 * [ -p1 p2 p3 .. pn opt_pkg opt_data size level ]
1187 * pkgs are negative if we tried them (to prevent inifinite recursion)
1188 * opt_pkg: recommends: package with the recommends
1190 * opt_data: recommends: depid
1195 createbranch(Solver *solv, int level, Queue *dq, Id p, Id data)
1197 Pool *pool = solv->pool;
1199 IF_POOLDEBUG (SOLV_DEBUG_POLICY)
1201 POOL_DEBUG (SOLV_DEBUG_POLICY, "creating a branch [data=%d]:\n", data);
1202 for (i = 0; i < dq->count; i++)
1203 POOL_DEBUG (SOLV_DEBUG_POLICY, " - %s\n", pool_solvid2str(pool, dq->elements[i]));
1205 queue_push(&solv->branches, -dq->elements[0]);
1206 for (i = 1; i < dq->count; i++)
1207 queue_push(&solv->branches, dq->elements[i]);
1208 queue_push2(&solv->branches, p, data);
1209 queue_push2(&solv->branches, dq->count + 4, level);
1213 takebranch(Solver *solv, int pos, int end, const char *msg, int disablerules)
1215 Pool *pool = solv->pool;
1221 printf("branch group level %d [%d-%d] %d %d:\n", solv->branches.elements[end - 1], end - solv->branches.elements[end - 2], end, solv->branches.elements[end - 4], solv->branches.elements[end - 3]);
1222 for (i = end - solv->branches.elements[end - 2]; i < end - 4; i++)
1223 printf("%c %c%s\n", i == pos ? 'x' : ' ', solv->branches.elements[i] >= 0 ? ' ' : '-', pool_solvid2str(pool, solv->branches.elements[i] >= 0 ? solv->branches.elements[i] : -solv->branches.elements[i]));
1226 level = solv->branches.elements[end - 1];
1227 p = solv->branches.elements[pos];
1228 solv->branches.elements[pos] = -p;
1229 POOL_DEBUG(SOLV_DEBUG_SOLVER, "%s %d -> %d with %s\n", msg, solv->decisionmap[p], level, pool_solvid2str(pool, p));
1230 /* hack: set level to zero so that revert does not remove the branch */
1231 solv->branches.elements[end - 1] = 0;
1232 revert(solv, level);
1233 solv->branches.elements[end - 1] = level;
1234 /* hack: revert simply sets the count, so we can still access the reverted elements */
1235 why = -solv->decisionq_why.elements[solv->decisionq_why.count];
1237 reason = solv->decisionq_reason.elements[level + 1];
1238 return setpropagatelearn(solv, level, p, disablerules, why, reason);
1241 /*-------------------------------------------------------------------
1243 * select and install
1245 * install best package from the queue. We add an extra package, inst, if
1246 * provided. See comment in weak install section.
1248 * returns the new solver level or -1 if unsolvable
1253 selectandinstall(Solver *solv, int level, Queue *dq, int disablerules, Id ruleid, Id reason)
1255 Pool *pool = solv->pool;
1259 policy_filter_unwanted(solv, dq, POLICY_MODE_CHOOSE);
1260 /* if we're resolving rules and didn't resolve the installed packages yet,
1261 * do some special supplements ordering */
1262 if (dq->count > 1 && solv->do_extra_reordering)
1263 reorder_dq_for_future_installed(solv, level, dq);
1264 /* if we have multiple candidates we open a branch */
1266 createbranch(solv, level, dq, 0, ruleid);
1267 p = dq->elements[0];
1268 POOL_DEBUG(SOLV_DEBUG_POLICY, "installing %s\n", pool_solvid2str(pool, p));
1269 return setpropagatelearn(solv, level, p, disablerules, ruleid, reason);
1273 /********************************************************************/
1274 /* Main solver interface */
1277 /*-------------------------------------------------------------------
1280 * create solver structure
1282 * pool: all available solvables
1283 * installed: installed Solvables
1286 * Upon solving, rules are created to flag the Solvables
1287 * of the 'installed' Repo as installed.
1291 solver_create(Pool *pool)
1294 solv = (Solver *)solv_calloc(1, sizeof(Solver));
1296 solv->installed = pool->installed;
1298 solv->allownamechange = 1;
1300 solv->dup_allowdowngrade = 1;
1301 solv->dup_allownamechange = 1;
1302 solv->dup_allowarchchange = 1;
1303 solv->dup_allowvendorchange = 1;
1305 solv->keepexplicitobsoletes = pool->noobsoletesmultiversion ? 0 : 1;
1307 queue_init(&solv->ruletojob);
1308 queue_init(&solv->decisionq);
1309 queue_init(&solv->decisionq_why);
1310 queue_init(&solv->decisionq_reason);
1311 queue_init(&solv->problems);
1312 queue_init(&solv->orphaned);
1313 queue_init(&solv->learnt_why);
1314 queue_init(&solv->learnt_pool);
1315 queue_init(&solv->branches);
1316 queue_init(&solv->weakruleq);
1317 queue_init(&solv->ruleassertions);
1318 queue_init(&solv->addedmap_deduceq);
1320 queue_push(&solv->learnt_pool, 0); /* so that 0 does not describe a proof */
1322 map_init(&solv->recommendsmap, pool->nsolvables);
1323 map_init(&solv->suggestsmap, pool->nsolvables);
1324 map_init(&solv->noupdate, solv->installed ? solv->installed->end - solv->installed->start : 0);
1325 solv->recommends_index = 0;
1327 solv->decisionmap = (Id *)solv_calloc(pool->nsolvables, sizeof(Id));
1329 solv->rules = solv_extend_resize(solv->rules, solv->nrules, sizeof(Rule), RULES_BLOCK);
1330 memset(solv->rules, 0, sizeof(Rule));
1337 /*-------------------------------------------------------------------
1343 queuep_free(Queue **qp)
1348 *qp = solv_free(*qp);
1352 map_zerosize(Map *m)
1362 solver_free(Solver *solv)
1364 queue_free(&solv->job);
1365 queue_free(&solv->ruletojob);
1366 queue_free(&solv->decisionq);
1367 queue_free(&solv->decisionq_why);
1368 queue_free(&solv->decisionq_reason);
1369 queue_free(&solv->learnt_why);
1370 queue_free(&solv->learnt_pool);
1371 queue_free(&solv->problems);
1372 queue_free(&solv->solutions);
1373 queue_free(&solv->orphaned);
1374 queue_free(&solv->branches);
1375 queue_free(&solv->weakruleq);
1376 queue_free(&solv->ruleassertions);
1377 queue_free(&solv->addedmap_deduceq);
1378 queuep_free(&solv->cleandeps_updatepkgs);
1379 queuep_free(&solv->cleandeps_mistakes);
1380 queuep_free(&solv->update_targets);
1381 queuep_free(&solv->installsuppdepq);
1382 queuep_free(&solv->recommendscplxq);
1383 queuep_free(&solv->suggestscplxq);
1384 queuep_free(&solv->brokenorphanrules);
1385 queuep_free(&solv->recommendsruleq);
1387 map_free(&solv->recommendsmap);
1388 map_free(&solv->suggestsmap);
1389 map_free(&solv->noupdate);
1390 map_free(&solv->weakrulemap);
1391 map_free(&solv->multiversion);
1393 map_free(&solv->updatemap);
1394 map_free(&solv->bestupdatemap);
1395 map_free(&solv->fixmap);
1396 map_free(&solv->dupmap);
1397 map_free(&solv->dupinvolvedmap);
1398 map_free(&solv->droporphanedmap);
1399 map_free(&solv->cleandepsmap);
1400 map_free(&solv->allowuninstallmap);
1401 map_free(&solv->excludefromweakmap);
1404 solv_free(solv->favormap);
1405 solv_free(solv->decisionmap);
1406 solv_free(solv->rules);
1407 solv_free(solv->watches);
1408 solv_free(solv->obsoletes);
1409 solv_free(solv->obsoletes_data);
1410 solv_free(solv->specialupdaters);
1411 solv_free(solv->choicerules_info);
1412 solv_free(solv->bestrules_info);
1413 solv_free(solv->yumobsrules_info);
1414 solv_free(solv->recommendsrules_info);
1415 solv_free(solv->instbuddy);
1420 solver_get_flag(Solver *solv, int flag)
1424 case SOLVER_FLAG_ALLOW_DOWNGRADE:
1425 return solv->allowdowngrade;
1426 case SOLVER_FLAG_ALLOW_NAMECHANGE:
1427 return solv->allownamechange;
1428 case SOLVER_FLAG_ALLOW_ARCHCHANGE:
1429 return solv->allowarchchange;
1430 case SOLVER_FLAG_ALLOW_VENDORCHANGE:
1431 return solv->allowvendorchange;
1432 case SOLVER_FLAG_ALLOW_UNINSTALL:
1433 return solv->allowuninstall;
1434 case SOLVER_FLAG_NO_UPDATEPROVIDE:
1435 return solv->noupdateprovide;
1436 case SOLVER_FLAG_SPLITPROVIDES:
1437 return solv->dosplitprovides;
1438 case SOLVER_FLAG_IGNORE_RECOMMENDED:
1439 return solv->dontinstallrecommended;
1440 case SOLVER_FLAG_ADD_ALREADY_RECOMMENDED:
1441 return solv->addalreadyrecommended;
1442 case SOLVER_FLAG_NO_INFARCHCHECK:
1443 return solv->noinfarchcheck;
1444 case SOLVER_FLAG_KEEP_EXPLICIT_OBSOLETES:
1445 return solv->keepexplicitobsoletes;
1446 case SOLVER_FLAG_BEST_OBEY_POLICY:
1447 return solv->bestobeypolicy;
1448 case SOLVER_FLAG_NO_AUTOTARGET:
1449 return solv->noautotarget;
1450 case SOLVER_FLAG_DUP_ALLOW_DOWNGRADE:
1451 return solv->dup_allowdowngrade;
1452 case SOLVER_FLAG_DUP_ALLOW_NAMECHANGE:
1453 return solv->dup_allownamechange;
1454 case SOLVER_FLAG_DUP_ALLOW_ARCHCHANGE:
1455 return solv->dup_allowarchchange;
1456 case SOLVER_FLAG_DUP_ALLOW_VENDORCHANGE:
1457 return solv->dup_allowvendorchange;
1458 case SOLVER_FLAG_KEEP_ORPHANS:
1459 return solv->keep_orphans;
1460 case SOLVER_FLAG_BREAK_ORPHANS:
1461 return solv->break_orphans;
1462 case SOLVER_FLAG_FOCUS_INSTALLED:
1463 return solv->focus_installed;
1464 case SOLVER_FLAG_FOCUS_BEST:
1465 return solv->focus_best;
1466 case SOLVER_FLAG_YUM_OBSOLETES:
1467 return solv->do_yum_obsoletes;
1468 case SOLVER_FLAG_NEED_UPDATEPROVIDE:
1469 return solv->needupdateprovide;
1470 case SOLVER_FLAG_URPM_REORDER:
1471 return solv->urpmreorder;
1472 case SOLVER_FLAG_STRONG_RECOMMENDS:
1473 return solv->strongrecommends;
1474 case SOLVER_FLAG_INSTALL_ALSO_UPDATES:
1475 return solv->install_also_updates;
1476 case SOLVER_FLAG_ONLY_NAMESPACE_RECOMMENDED:
1477 return solv->only_namespace_recommended;
1485 solver_set_flag(Solver *solv, int flag, int value)
1487 int old = solver_get_flag(solv, flag);
1490 case SOLVER_FLAG_ALLOW_DOWNGRADE:
1491 solv->allowdowngrade = value;
1493 case SOLVER_FLAG_ALLOW_NAMECHANGE:
1494 solv->allownamechange = value;
1496 case SOLVER_FLAG_ALLOW_ARCHCHANGE:
1497 solv->allowarchchange = value;
1499 case SOLVER_FLAG_ALLOW_VENDORCHANGE:
1500 solv->allowvendorchange = value;
1502 case SOLVER_FLAG_ALLOW_UNINSTALL:
1503 solv->allowuninstall = value;
1505 case SOLVER_FLAG_NO_UPDATEPROVIDE:
1506 solv->noupdateprovide = value;
1508 case SOLVER_FLAG_SPLITPROVIDES:
1509 solv->dosplitprovides = value;
1511 case SOLVER_FLAG_IGNORE_RECOMMENDED:
1512 solv->dontinstallrecommended = value;
1514 case SOLVER_FLAG_ADD_ALREADY_RECOMMENDED:
1515 solv->addalreadyrecommended = value;
1517 case SOLVER_FLAG_NO_INFARCHCHECK:
1518 solv->noinfarchcheck = value;
1520 case SOLVER_FLAG_KEEP_EXPLICIT_OBSOLETES:
1521 solv->keepexplicitobsoletes = value;
1523 case SOLVER_FLAG_BEST_OBEY_POLICY:
1524 solv->bestobeypolicy = value;
1526 case SOLVER_FLAG_NO_AUTOTARGET:
1527 solv->noautotarget = value;
1529 case SOLVER_FLAG_DUP_ALLOW_DOWNGRADE:
1530 solv->dup_allowdowngrade = value;
1532 case SOLVER_FLAG_DUP_ALLOW_NAMECHANGE:
1533 solv->dup_allownamechange = value;
1535 case SOLVER_FLAG_DUP_ALLOW_ARCHCHANGE:
1536 solv->dup_allowarchchange = value;
1538 case SOLVER_FLAG_DUP_ALLOW_VENDORCHANGE:
1539 solv->dup_allowvendorchange = value;
1541 case SOLVER_FLAG_KEEP_ORPHANS:
1542 solv->keep_orphans = value;
1544 case SOLVER_FLAG_BREAK_ORPHANS:
1545 solv->break_orphans = value;
1547 case SOLVER_FLAG_FOCUS_INSTALLED:
1548 solv->focus_installed = value;
1550 case SOLVER_FLAG_FOCUS_BEST:
1551 solv->focus_best = value;
1553 case SOLVER_FLAG_YUM_OBSOLETES:
1554 solv->do_yum_obsoletes = value;
1556 case SOLVER_FLAG_NEED_UPDATEPROVIDE:
1557 solv->needupdateprovide = value;
1559 case SOLVER_FLAG_URPM_REORDER:
1560 solv->urpmreorder = value;
1562 case SOLVER_FLAG_STRONG_RECOMMENDS:
1563 solv->strongrecommends = value;
1565 case SOLVER_FLAG_INSTALL_ALSO_UPDATES:
1566 solv->install_also_updates = value;
1568 case SOLVER_FLAG_ONLY_NAMESPACE_RECOMMENDED:
1569 solv->only_namespace_recommended = value;
1578 resolve_jobrules(Solver *solv, int level, int disablerules, Queue *dq)
1580 Pool *pool = solv->pool;
1581 int oldlevel = level;
1585 POOL_DEBUG(SOLV_DEBUG_SOLVER, "resolving job rules\n");
1586 for (i = solv->jobrules, r = solv->rules + i; i < solv->jobrules_end; i++, r++)
1589 if (r->d < 0) /* ignore disabled rules */
1592 FOR_RULELITERALS(l, pp, r)
1596 if (solv->decisionmap[-l] <= 0)
1601 if (solv->decisionmap[l] > 0)
1603 if (solv->decisionmap[l] == 0)
1607 if (l || !dq->count)
1609 /* prune to installed if not updating */
1610 if (dq->count > 1 && solv->installed && !solv->updatemap_all &&
1611 !solv->install_also_updates &&
1612 !(solv->job.elements[solv->ruletojob.elements[i - solv->jobrules]] & SOLVER_ORUPDATE))
1614 int j = dq->count, k;
1615 if (solv->updatemap.size)
1617 /* do not prune if an installed package wants to be updated */
1618 for (j = 0; j < dq->count; j++)
1619 if (pool->solvables[dq->elements[j]].repo == solv->installed
1620 && MAPTST(&solv->updatemap, dq->elements[j] - solv->installed->start))
1625 for (j = k = 0; j < dq->count; j++)
1626 if (pool->solvables[dq->elements[j]].repo == solv->installed)
1627 dq->elements[k++] = dq->elements[j];
1633 level = selectandinstall(solv, level, dq, disablerules, i, SOLVER_REASON_RESOLVE_JOB);
1634 r = solv->rules + i; /* selectandinstall may have added more rules */
1635 if (level <= olevel)
1637 if (level == olevel)
1641 continue; /* try something else */
1643 if (level < oldlevel)
1645 /* redo from start of jobrules */
1646 i = solv->jobrules - 1;
1647 r = solv->rules + i;
1654 prune_to_update_targets(Solver *solv, Id *cp, Queue *q)
1658 for (i = j = 0; i < q->count; i++)
1661 for (cp2 = cp; *cp2; cp2++)
1664 q->elements[j++] = p;
1668 queue_truncate(q, j);
1672 resolve_installed(Solver *solv, int level, int disablerules, Queue *dq)
1674 Pool *pool = solv->pool;
1675 Repo *installed = solv->installed;
1677 int installedpos = solv->installedpos;
1680 int olevel, origlevel = level;
1682 POOL_DEBUG(SOLV_DEBUG_SOLVER, "resolving installed packages\n");
1684 installedpos = installed->start;
1685 /* we use two passes if we need to update packages
1686 * to create a better user experience */
1687 for (pass = solv->updatemap.size ? 0 : 1; pass < 2; )
1689 int passlevel = level;
1690 Id *specialupdaters = solv->specialupdaters;
1691 /* start with installedpos, the position that gave us problems the last time */
1692 for (i = installedpos, n = installed->start; n < installed->end; i++, n++)
1697 if (i == installed->end)
1698 i = installed->start;
1699 s = pool->solvables + i;
1700 if (s->repo != installed)
1703 if (solv->decisionmap[i] > 0 && (!specialupdaters || !specialupdaters[i - installed->start]))
1704 continue; /* already decided */
1705 if (!pass && solv->updatemap.size && !MAPTST(&solv->updatemap, i - installed->start))
1706 continue; /* updates first */
1707 r = solv->rules + solv->updaterules + (i - installed->start);
1709 if (!rr->p || rr->d < 0) /* disabled -> look at feature rule */
1710 rr -= solv->installed->end - solv->installed->start;
1711 if (!rr->p) /* identical to update rule? */
1714 continue; /* orpaned package or pseudo package */
1716 /* check if we should update this package to the latest version
1717 * noupdate is set for erase jobs, in that case we want to deinstall
1718 * the installed package and not replace it with a newer version
1719 * rr->p != i is for dup jobs where the installed package cannot be kept */
1722 if (!MAPTST(&solv->noupdate, i - installed->start) && (solv->decisionmap[i] < 0 || solv->updatemap_all || (solv->updatemap.size && MAPTST(&solv->updatemap, i - installed->start)) || (rr->p && rr->p != i)))
1724 if (specialupdaters && (d = specialupdaters[i - installed->start]) != 0)
1727 /* special multiversion handling, make sure best version is chosen */
1728 if (rr->p == i && solv->decisionmap[i] >= 0)
1730 while ((p = pool->whatprovidesdata[d++]) != 0)
1731 if (solv->decisionmap[p] >= 0)
1733 for (j = 0; j < dq->count; j++)
1735 Id p2 = dq->elements[j];
1736 if (pool->solvables[p2].repo != installed)
1738 d = specialupdaters[i - installed->start];
1739 while ((p = pool->whatprovidesdata[d++]) != 0)
1741 if (solv->decisionmap[p] >= 0 || pool->solvables[p].repo == installed)
1743 if (solvable_identical(pool->solvables + p, pool->solvables + p2))
1744 queue_push(dq, p); /* identical to installed, put it on the list so we have a repo prio */
1747 if (dq->count && solv->update_targets && solv->update_targets->elements[i - installed->start])
1748 prune_to_update_targets(solv, solv->update_targets->elements + solv->update_targets->elements[i - installed->start], dq);
1751 policy_filter_unwanted(solv, dq, POLICY_MODE_CHOOSE);
1752 p = dq->elements[0];
1753 if (p != i && solv->decisionmap[p] == 0)
1755 rr = solv->rules + solv->featurerules + (i - solv->installed->start);
1756 if (!rr->p) /* update rule == feature rule? */
1757 rr = rr - solv->featurerules + solv->updaterules;
1766 /* update to best package of the update rule */
1767 FOR_RULELITERALS(p, pp, rr)
1769 if (solv->decisionmap[p] > 0)
1771 dq->count = 0; /* already fulfilled */
1774 if (!solv->decisionmap[p])
1779 if (dq->count && solv->update_targets && solv->update_targets->elements[i - installed->start])
1780 prune_to_update_targets(solv, solv->update_targets->elements + solv->update_targets->elements[i - installed->start], dq);
1781 /* install best version */
1785 level = selectandinstall(solv, level, dq, disablerules, rr - solv->rules, SOLVER_REASON_UPDATE_INSTALLED);
1786 if (level <= olevel)
1788 if (level < passlevel)
1789 break; /* trouble */
1791 n = installed->start; /* redo all */
1797 /* if still undecided keep package */
1798 if (solv->decisionmap[i] == 0)
1801 if (solv->cleandepsmap.size && MAPTST(&solv->cleandepsmap, i - installed->start))
1804 POOL_DEBUG(SOLV_DEBUG_POLICY, "cleandeps erasing %s\n", pool_solvid2str(pool, i));
1805 level = setpropagatelearn(solv, level, -i, disablerules, 0, SOLVER_REASON_CLEANDEPS_ERASE);
1812 POOL_DEBUG(SOLV_DEBUG_POLICY, "keeping %s\n", pool_solvid2str(pool, i));
1813 level = setpropagatelearn(solv, level, i, disablerules, r - solv->rules, SOLVER_REASON_KEEP_INSTALLED);
1815 if (level <= olevel)
1817 if (level < passlevel)
1818 break; /* trouble */
1820 n = installed->start; /* redo all */
1823 continue; /* retry with learnt rule */
1827 if (n < installed->end)
1829 installedpos = i; /* retry problem solvable next time */
1830 if (level < origlevel)
1831 break; /* ran into trouble */
1832 /* re-run all passes */
1833 pass = solv->updatemap.size ? 0 : 1;
1836 /* reset installedpos, advance to next pass */
1837 installedpos = installed->start;
1840 solv->installedpos = installedpos;
1844 /* one or more installed cleandeps packages in dq that are to be updated */
1845 /* we need to emulate the code in resolve_installed */
1847 do_cleandeps_update_filter(Solver *solv, Queue *dq)
1849 Pool *pool = solv->pool;
1850 Repo *installed = solv->installed;
1851 Id *specialupdaters = solv->specialupdaters;
1857 for (i = 0; i < dq->count; i++)
1859 Id p = dq->elements[i];
1862 if (pool->solvables[p].repo != installed || !MAPTST(&solv->cleandepsmap, p - installed->start))
1866 if (specialupdaters && (d = specialupdaters[p - installed->start]) != 0)
1868 while ((p2 = pool->whatprovidesdata[d++]) != 0)
1869 if (solv->decisionmap[p2] >= 0)
1874 Rule *r = solv->rules + solv->updaterules + (p - installed->start);
1877 FOR_RULELITERALS(p2, pp, r)
1878 if (solv->decisionmap[p2] >= 0)
1882 if (q.count && solv->update_targets && solv->update_targets->elements[p - installed->start])
1883 prune_to_update_targets(solv, solv->update_targets->elements + solv->update_targets->elements[p - installed->start], &q);
1884 /* mark all elements in dq that are in the updaters list */
1885 dq->elements[i] = -p;
1886 for (j = 0; j < dq->count; j++)
1888 p = dq->elements[j];
1891 for (k = 0; k < q.count; k++)
1892 if (q.elements[k] == p)
1894 dq->elements[j] = -p;
1899 /* now prune to marked elements */
1900 for (i = j = 0; i < dq->count; i++)
1901 if ((p = dq->elements[i]) < 0)
1902 dq->elements[j++] = -p;
1908 resolve_dependencies(Solver *solv, int level, int disablerules, Queue *dq)
1910 Pool *pool = solv->pool;
1914 int origlevel = level;
1916 int focusbest = solv->focus_best && solv->do_extra_reordering;
1917 Repo *installed = solv->installed;
1922 POOL_DEBUG(SOLV_DEBUG_POLICY, "deciding unresolved rules\n");
1924 for (i = 1, n = 1; ; i++, n++)
1926 if (n >= solv->nrules)
1934 if (i == solv->nrules)
1936 if (focusbest && i >= solv->featurerules)
1938 r = solv->rules + i;
1939 if (r->d < 0) /* ignore disabled rules */
1941 if (r->p < 0) /* most common cases first */
1943 if (r->d == 0 || solv->decisionmap[-r->p] <= 0)
1946 if (focusbest && r->d != 0 && installed)
1948 /* make sure at least one negative literal is from a new package */
1949 if (!(r->p < 0 && pool->solvables[-r->p].repo != installed))
1951 dp = pool->whatprovidesdata + r->d;
1952 while ((p = *dp++) != 0)
1953 if (p < 0 && solv->decisionmap[-p] > 0 && pool->solvables[-p].repo != installed)
1956 continue; /* sorry */
1963 /* binary or unary rule */
1964 /* need two positive undecided literals, r->p already checked above */
1967 if (solv->decisionmap[r->p] || solv->decisionmap[r->w2])
1969 queue_push(dq, r->p);
1970 queue_push(dq, r->w2);
1975 * all negative literals are installed
1976 * no positive literal is installed
1977 * i.e. the rule is not fulfilled and we
1978 * just need to decide on the positive literals
1979 * (decisionmap[-r->p] for the r->p < 0 case is already checked above)
1983 if (solv->decisionmap[r->p] > 0)
1985 if (solv->decisionmap[r->p] == 0)
1986 queue_push(dq, r->p);
1988 dp = pool->whatprovidesdata + r->d;
1989 while ((p = *dp++) != 0)
1993 if (solv->decisionmap[-p] <= 0)
1998 if (solv->decisionmap[p] > 0)
2000 if (solv->decisionmap[p] == 0)
2007 IF_POOLDEBUG (SOLV_DEBUG_PROPAGATE)
2009 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "unfulfilled ");
2010 solver_printruleclass(solv, SOLV_DEBUG_PROPAGATE, r);
2012 /* dq->count < 2 cannot happen as this means that
2013 * the rule is unit */
2014 assert(dq->count > 1);
2016 /* prune to cleandeps packages */
2017 if (solv->cleandepsmap.size && solv->installed)
2019 int cleandeps_update = 0;
2020 Repo *installed = solv->installed;
2021 for (j = 0; j < dq->count; j++)
2022 if (pool->solvables[dq->elements[j]].repo == installed && MAPTST(&solv->cleandepsmap, dq->elements[j] - installed->start))
2024 if (solv->updatemap_all || (solv->updatemap.size && MAPTST(&solv->updatemap, dq->elements[j] - installed->start)))
2026 cleandeps_update = 1; /* cleandeps package is marked for update */
2033 dq->elements[0] = dq->elements[j];
2034 queue_truncate(dq, 1);
2036 else if (cleandeps_update)
2037 do_cleandeps_update_filter(solv, dq); /* special update filter */
2040 if (dq->count > 1 && postponed >= 0)
2042 policy_filter_unwanted(solv, dq, POLICY_MODE_CHOOSE_NOREORDER);
2051 level = selectandinstall(solv, level, dq, disablerules, r - solv->rules, SOLVER_REASON_RESOLVE);
2052 if (level < origlevel)
2053 break; /* trouble */
2054 /* something changed, so look at all rules again */
2061 #ifdef ENABLE_COMPLEX_DEPS
2064 add_complex_recommends(Solver *solv, Id rec, Queue *dq, Map *dqmap)
2066 Pool *pool = solv->pool;
2067 int oldcnt = dq->count;
2073 printf("ADD_COMPLEX_RECOMMENDS %s\n", pool_dep2str(pool, rec));
2075 i = pool_normalize_complex_dep(pool, rec, dq, CPLXDEPS_EXPAND);
2076 if (i == 0 || i == 1)
2079 for (i = oldcnt; i < cutcnt; i++)
2082 for (; (p = dq->elements[i]) != 0; i++)
2086 if (solv->decisionmap[-p] <= 0)
2090 if (solv->decisionmap[p] > 0)
2092 queue_truncate(dq, blkcnt);
2095 if (solv->decisionmap[p] < 0)
2099 if (!MAPTST(dqmap, p))
2104 if (solv->process_orphans && solv->installed && pool->solvables[p].repo == solv->installed && (solv->droporphanedmap_all || (solv->droporphanedmap.size && MAPTST(&solv->droporphanedmap, p - solv->installed->start))))
2109 while (dq->elements[i])
2112 queue_deleten(dq, oldcnt, cutcnt - oldcnt);
2114 if (dq->count != oldcnt)
2116 for (j = oldcnt; j < dq->count; j++)
2118 p = dq->elements[j];
2119 for (i = 0; i < j; i++)
2120 if (dq->elements[i] == p)
2122 dq->elements[j] = 0;
2126 for (i = j = oldcnt; j < dq->count; j++)
2127 if (dq->elements[j])
2128 dq->elements[i++] = dq->elements[j];
2129 queue_truncate(dq, i);
2132 printf("RETURN:\n");
2133 for (i = oldcnt; i < dq->count; i++)
2134 printf(" - %s\n", pool_solvid2str(pool, dq->elements[i]));
2139 do_complex_recommendations(Solver *solv, Id rec, Map *m, int noselected)
2141 Pool *pool = solv->pool;
2147 printf("DO_COMPLEX_RECOMMENDATIONS %s\n", pool_dep2str(pool, rec));
2150 i = pool_normalize_complex_dep(pool, rec, &dq, CPLXDEPS_EXPAND);
2151 if (i == 0 || i == 1)
2156 for (i = 0; i < dq.count; i++)
2159 for (; (p = dq.elements[i]) != 0; i++)
2163 if (solv->decisionmap[-p] <= 0)
2167 if (solv->decisionmap[p] > 0)
2172 for (i++; (p = dq.elements[i]) != 0; i++)
2173 if (p > 0 && solv->decisionmap[p] > 0)
2181 for (i = blk; (p = dq.elements[i]) != 0; i++)
2185 while (dq.elements[i])
2194 prune_disfavored(Solver *solv, Queue *plist)
2197 for (i = j = 0; i < plist->count; i++)
2199 Id p = plist->elements[i];
2200 if (solv->favormap[p] >= 0)
2201 plist->elements[j++] = p;
2204 queue_truncate(plist, j);
2208 prune_exclude_from_weak(Solver *solv, Queue *plist)
2211 for (i = j = 0; i < plist->count; i++)
2213 Id p = plist->elements[i];
2214 if (!MAPTST(&solv->excludefromweakmap, p))
2215 plist->elements[j++] = p;
2218 queue_truncate(plist, j);
2222 resolve_weak(Solver *solv, int level, int disablerules, Queue *dq, Queue *dqs, int *rerunp)
2224 Pool *pool = solv->pool;
2232 POOL_DEBUG(SOLV_DEBUG_POLICY, "installing recommended packages\n");
2234 queue_empty(dq); /* recommended packages */
2236 queue_empty(dqs); /* supplemented packages */
2237 for (i = 1; i < pool->nsolvables; i++)
2239 if (solv->decisionmap[i] < 0)
2241 s = pool->solvables + i;
2242 if (solv->decisionmap[i] > 0)
2244 /* installed, check for recommends */
2245 Id *recp, rec, pp, p;
2246 if (!solv->addalreadyrecommended && s->repo == solv->installed)
2250 recp = s->repo->idarraydata + s->recommends;
2251 while ((rec = *recp++) != 0)
2253 /* cheat: we just look if there is REL_NAMESPACE in the dep */
2254 if (solv->only_namespace_recommended && !solver_is_namespace_dep(solv, rec))
2256 #ifdef ENABLE_COMPLEX_DEPS
2257 if (pool_is_complex_dep(pool, rec))
2259 add_complex_recommends(solv, rec, dq, 0);
2264 FOR_PROVIDES(p, pp, rec)
2266 if (solv->decisionmap[p] > 0)
2271 else if (solv->decisionmap[p] == 0)
2273 if (solv->process_orphans && solv->installed && pool->solvables[p].repo == solv->installed && (solv->droporphanedmap_all || (solv->droporphanedmap.size && MAPTST(&solv->droporphanedmap, p - solv->installed->start))))
2275 queue_pushunique(dq, p);
2283 /* not yet installed, check if supplemented */
2284 if (!s->supplements)
2286 if (!pool_installable(pool, s))
2288 if (!solver_is_supplementing(solv, s))
2290 if (solv->process_orphans && solv->installed && s->repo == solv->installed && (solv->droporphanedmap_all || (solv->droporphanedmap.size && MAPTST(&solv->droporphanedmap, i - solv->installed->start))))
2292 if (solv->havedisfavored && solv->favormap[i] < 0)
2293 continue; /* disfavored supplements, do not install */
2294 if (solv->excludefromweakmap.size && MAPTST(&solv->excludefromweakmap, i))
2295 continue; /* excluded for weak deps, do not install */
2300 /* filter out disfavored recommended packages */
2301 if (dq->count && solv->havedisfavored)
2302 prune_disfavored(solv, dq);
2304 /* filter out weak_excluded recommended packages */
2305 if (solv->excludefromweakmap.size)
2306 prune_exclude_from_weak(solv, dq);
2308 /* filter out all packages obsoleted by installed packages */
2309 /* this is no longer needed if we have (and trust) reverse obsoletes */
2310 if ((dqs->count || dq->count) && solv->installed)
2313 Id obs, *obsp, po, ppo;
2315 map_init(&obsmap, pool->nsolvables);
2316 for (p = solv->installed->start; p < solv->installed->end; p++)
2318 s = pool->solvables + p;
2319 if (s->repo != solv->installed || !s->obsoletes)
2321 if (solv->decisionmap[p] <= 0)
2323 if (!solv->keepexplicitobsoletes && solv->multiversion.size && MAPTST(&solv->multiversion, p))
2325 obsp = s->repo->idarraydata + s->obsoletes;
2326 /* foreach obsoletes */
2327 while ((obs = *obsp++) != 0)
2328 FOR_PROVIDES(po, ppo, obs)
2330 Solvable *pos = pool->solvables + po;
2331 if (!pool->obsoleteusesprovides && !pool_match_nevr(pool, pos, obs))
2333 if (pool->obsoleteusescolors && !pool_colormatch(pool, s, pos))
2335 MAPSET(&obsmap, po);
2338 for (i = j = 0; i < dqs->count; i++)
2339 if (!MAPTST(&obsmap, dqs->elements[i]))
2340 dqs->elements[j++] = dqs->elements[i];
2342 for (i = j = 0; i < dq->count; i++)
2343 if (!MAPTST(&obsmap, dq->elements[i]))
2344 dq->elements[j++] = dq->elements[i];
2349 /* filter out all already supplemented packages if requested */
2350 if ((!solv->addalreadyrecommended || solv->only_namespace_recommended) && dqs->count)
2352 /* filter out old supplements */
2353 for (i = j = 0; i < dqs->count; i++)
2355 p = dqs->elements[i];
2356 s = pool->solvables + p;
2357 if (s->supplements && solver_is_supplementing_alreadyinstalled(solv, s))
2358 dqs->elements[j++] = p;
2363 /* multiversion doesn't mix well with supplements.
2364 * filter supplemented packages where we already decided
2365 * to install a different version (see bnc#501088) */
2366 if (dqs->count && solv->multiversion.size)
2368 for (i = j = 0; i < dqs->count; i++)
2370 p = dqs->elements[i];
2371 if (MAPTST(&solv->multiversion, p))
2374 s = pool->solvables + p;
2375 FOR_PROVIDES(p2, pp2, s->name)
2376 if (solv->decisionmap[p2] > 0 && pool->solvables[p2].name == s->name)
2379 continue; /* ignore this package */
2381 dqs->elements[j++] = p;
2386 /* implicitobsoleteusescolors doesn't mix well with supplements.
2387 * filter supplemented packages where we already decided
2388 * to install a different architecture */
2389 if (dqs->count && pool->implicitobsoleteusescolors)
2391 for (i = j = 0; i < dqs->count; i++)
2394 p = dqs->elements[i];
2395 s = pool->solvables + p;
2396 FOR_PROVIDES(p2, pp2, s->name)
2397 if (solv->decisionmap[p2] > 0 && pool->solvables[p2].name == s->name && pool->solvables[p2].arch != s->arch)
2400 continue; /* ignore this package */
2401 dqs->elements[j++] = p;
2406 /* make dq contain both recommended and supplemented pkgs */
2409 for (i = 0; i < dqs->count; i++)
2410 queue_pushunique(dq, dqs->elements[i]);
2419 /* simple case, just one package. no need to choose to best version */
2420 p = dq->elements[0];
2422 POOL_DEBUG(SOLV_DEBUG_POLICY, "installing supplemented %s\n", pool_solvid2str(pool, p));
2424 POOL_DEBUG(SOLV_DEBUG_POLICY, "installing recommended %s\n", pool_solvid2str(pool, p));
2425 return setpropagatelearn(solv, level, p, 0, 0, SOLVER_REASON_WEAKDEP);
2428 /* filter packages, this gives us the best versions */
2429 policy_filter_unwanted(solv, dq, POLICY_MODE_RECOMMEND);
2431 /* create map of result */
2432 map_init(&dqmap, pool->nsolvables);
2433 for (i = 0; i < dq->count; i++)
2434 MAPSET(&dqmap, dq->elements[i]);
2436 /* prune dqs so that it only contains the best versions */
2437 for (i = j = 0; i < dqs->count; i++)
2439 p = dqs->elements[i];
2440 if (MAPTST(&dqmap, p))
2441 dqs->elements[j++] = p;
2445 /* install all supplemented packages, but order first */
2447 policy_filter_unwanted(solv, dqs, POLICY_MODE_SUPPLEMENT);
2448 decisioncount = solv->decisionq.count;
2449 for (i = 0; i < dqs->count; i++)
2451 p = dqs->elements[i];
2452 if (solv->decisionmap[p])
2454 POOL_DEBUG(SOLV_DEBUG_POLICY, "installing supplemented %s\n", pool_solvid2str(pool, p));
2456 level = setpropagatelearn(solv, level, p, 0, 0, SOLVER_REASON_WEAKDEP);
2457 if (level <= olevel)
2460 if (i < dqs->count || solv->decisionq.count < decisioncount)
2466 /* install all recommended packages */
2467 /* more work as we want to created branches if multiple
2468 * choices are valid */
2469 for (i = 0; i < decisioncount; i++)
2472 p = solv->decisionq.elements[i];
2475 s = pool->solvables + p;
2476 if (!s->repo || (!solv->addalreadyrecommended && s->repo == solv->installed))
2480 recp = s->repo->idarraydata + s->recommends;
2481 while ((rec = *recp++) != 0)
2484 #ifdef ENABLE_COMPLEX_DEPS
2485 if (pool_is_complex_dep(pool, rec))
2486 add_complex_recommends(solv, rec, dq, &dqmap);
2489 FOR_PROVIDES(p, pp, rec)
2491 if (solv->decisionmap[p] > 0)
2496 else if (solv->decisionmap[p] == 0 && MAPTST(&dqmap, p))
2502 policy_filter_unwanted(solv, dq, POLICY_MODE_CHOOSE);
2503 /* if we have multiple candidates we open a branch */
2505 createbranch(solv, level, dq, s - pool->solvables, rec);
2506 p = dq->elements[0];
2507 POOL_DEBUG(SOLV_DEBUG_POLICY, "installing recommended %s\n", pool_solvid2str(pool, p));
2509 level = setpropagatelearn(solv, level, p, 0, 0, SOLVER_REASON_WEAKDEP);
2510 if (level <= olevel || solv->decisionq.count < decisioncount)
2511 break; /* we had to revert some decisions */
2514 break; /* had a problem above, quit loop */
2521 resolve_cleandeps(Solver *solv, int level, int disablerules, int *rerunp)
2523 Pool *pool = solv->pool;
2524 Repo *installed = solv->installed;
2529 if (!installed || !solv->cleandepsmap.size)
2531 POOL_DEBUG(SOLV_DEBUG_SOLVER, "deciding cleandeps packages\n");
2532 for (p = installed->start; p < installed->end; p++)
2534 s = pool->solvables + p;
2535 if (s->repo != installed)
2537 if (solv->decisionmap[p] != 0 || !MAPTST(&solv->cleandepsmap, p - installed->start))
2539 POOL_DEBUG(SOLV_DEBUG_POLICY, "cleandeps erasing %s\n", pool_solvid2str(pool, p));
2541 level = setpropagatelearn(solv, level, -p, 0, 0, SOLVER_REASON_CLEANDEPS_ERASE);
2545 if (p < installed->end)
2551 resolve_orphaned(Solver *solv, int level, int disablerules, Queue *dq, int *rerunp)
2553 Pool *pool = solv->pool;
2556 int installedone = 0;
2559 /* let's see if we can install some unsupported package */
2560 POOL_DEBUG(SOLV_DEBUG_SOLVER, "deciding orphaned packages\n");
2561 for (i = 0; i < solv->orphaned.count; i++)
2563 p = solv->orphaned.elements[i];
2564 if (solv->decisionmap[p])
2565 continue; /* already decided */
2566 if (solv->droporphanedmap_all)
2568 if (solv->droporphanedmap.size && MAPTST(&solv->droporphanedmap, p - solv->installed->start))
2570 POOL_DEBUG(SOLV_DEBUG_SOLVER, "keeping orphaned %s\n", pool_solvid2str(pool, p));
2572 level = setpropagatelearn(solv, level, p, 0, 0, SOLVER_REASON_RESOLVE_ORPHAN);
2577 if (installedone || i < solv->orphaned.count)
2582 for (i = 0; i < solv->orphaned.count; i++)
2584 p = solv->orphaned.elements[i];
2585 if (solv->decisionmap[p])
2586 continue; /* already decided */
2587 POOL_DEBUG(SOLV_DEBUG_SOLVER, "removing orphaned %s\n", pool_solvid2str(pool, p));
2589 level = setpropagatelearn(solv, level, -p, 0, 0, SOLVER_REASON_RESOLVE_ORPHAN);
2596 if (solv->brokenorphanrules)
2598 solver_check_brokenorphanrules(solv, dq);
2601 policy_filter_unwanted(solv, dq, POLICY_MODE_CHOOSE);
2602 for (i = 0; i < dq->count; i++)
2604 p = dq->elements[i];
2605 POOL_DEBUG(SOLV_DEBUG_POLICY, "installing orphaned dep %s\n", pool_solvid2str(pool, p));
2607 level = setpropagatelearn(solv, level, p, 0, 0, SOLVER_REASON_RESOLVE_ORPHAN);
2618 /*-------------------------------------------------------------------
2622 * all rules have been set up, now actually run the solver
2627 solver_run_sat(Solver *solv, int disablerules, int doweak)
2629 Queue dq; /* local decisionqueue */
2630 Queue dqs; /* local decisionqueue for supplements */
2636 Pool *pool = solv->pool;
2638 int minimizationsteps;
2640 IF_POOLDEBUG (SOLV_DEBUG_RULE_CREATION)
2642 POOL_DEBUG (SOLV_DEBUG_RULE_CREATION, "number of rules: %d\n", solv->nrules);
2643 for (i = 1; i < solv->nrules; i++)
2644 solver_printruleclass(solv, SOLV_DEBUG_RULE_CREATION, solv->rules + i);
2647 /* start SAT algorithm */
2649 systemlevel = level + 1;
2650 POOL_DEBUG(SOLV_DEBUG_SOLVER, "solving...\n");
2654 solv->installedpos = 0;
2655 solv->do_extra_reordering = 0;
2658 * here's the main loop:
2659 * 1) decide assertion rules and propagate
2661 * 3) try to keep installed packages
2662 * 4) fulfill all unresolved rules
2663 * 5) install recommended packages
2664 * 6) minimalize solution if we had choices
2665 * if we encounter a problem, we rewind to a safe level and restart
2669 minimizationsteps = 0;
2673 * initial propagation of the assertions
2679 level = makeruledecisions(solv, disablerules);
2682 POOL_DEBUG(SOLV_DEBUG_PROPAGATE, "initial propagate (propagate_index: %d; size decisionq: %d)...\n", solv->propagate_index, solv->decisionq.count);
2683 if ((r = propagate(solv, level)) != 0)
2685 level = analyze_unsolvable(solv, r, disablerules);
2688 systemlevel = level + 1;
2692 * resolve jobs first (unless focus_installed is set)
2694 if (level < systemlevel && !solv->focus_installed)
2696 if (solv->installed && solv->installed->nsolvables && !solv->installed->disabled)
2697 solv->do_extra_reordering = 1;
2699 level = resolve_jobrules(solv, level, disablerules, &dq);
2700 solv->do_extra_reordering = 0;
2703 systemlevel = level + 1;
2706 /* resolve job dependencies in the focus_best case */
2707 if (level < systemlevel && solv->focus_best && !solv->focus_installed && solv->installed && solv->installed->nsolvables && !solv->installed->disabled)
2709 solv->do_extra_reordering = 1;
2711 level = resolve_dependencies(solv, level, disablerules, &dq);
2712 solv->do_extra_reordering = 0;
2714 continue; /* start over */
2715 systemlevel = level + 1;
2719 * installed packages
2721 if (level < systemlevel && solv->installed && solv->installed->nsolvables && !solv->installed->disabled)
2724 level = resolve_installed(solv, level, disablerules, &dq);
2727 systemlevel = level + 1;
2730 /* resolve jobs in focus_installed case */
2731 if (level < systemlevel && solv->focus_installed)
2734 level = resolve_jobrules(solv, level, disablerules, &dq);
2737 systemlevel = level + 1;
2740 if (level < systemlevel)
2741 systemlevel = level;
2743 /* resolve all dependencies */
2745 level = resolve_dependencies(solv, level, disablerules, &dq);
2747 continue; /* start over */
2749 /* decide leftover cleandeps packages */
2750 if (solv->cleandepsmap.size && solv->installed)
2753 level = resolve_cleandeps(solv, level, disablerules, &rerun);
2758 /* at this point we have a consistent system. now do the extras... */
2763 level = resolve_weak(solv, level, disablerules, &dq, &dqs, &rerun);
2768 if (solv->installed && (solv->orphaned.count || solv->brokenorphanrules))
2771 level = resolve_orphaned(solv, level, disablerules, &dq, &rerun);
2776 /* one final pass to make sure we decided all installed packages */
2777 if (solv->installed)
2779 for (p = solv->installed->start; p < solv->installed->end; p++)
2781 if (solv->decisionmap[p])
2782 continue; /* already decided */
2783 s = pool->solvables + p;
2784 if (s->repo != solv->installed)
2786 POOL_DEBUG(SOLV_DEBUG_SOLVER, "removing unwanted %s\n", pool_solvid2str(pool, p));
2788 level = setpropagatelearn(solv, level, -p, 0, 0, SOLVER_REASON_CLEANDEPS_ERASE);
2792 if (p < solv->installed->end)
2793 continue; /* back to main loop */
2796 if (solv->installed && solv->cleandepsmap.size && solver_check_cleandeps_mistakes(solv))
2799 level = 0; /* restart from scratch */
2803 if (solv->solution_callback)
2805 solv->solution_callback(solv, solv->solution_callback_data);
2806 if (solv->branches.count)
2810 for (i = solv->branches.count - 1; i >= 0; i--)
2812 p = solv->branches.elements[i];
2817 i -= 3; /* skip: p data count */
2826 while (i > 0 && solv->branches.elements[i - 1] > 0)
2828 level = takebranch(solv, i, endi, "branching", disablerules);
2832 /* all branches done, we're finally finished */
2836 /* auto-minimization step */
2837 if (solv->branches.count)
2839 int endi, lasti = -1, lastiend = -1;
2840 if (solv->recommends_index < solv->decisionq.count)
2841 policy_update_recommendsmap(solv);
2842 for (endi = solv->branches.count; endi > 0;)
2844 int l, lastsi = -1, starti = endi - solv->branches.elements[endi - 2];
2845 l = solv->branches.elements[endi - 1];
2846 for (i = starti; i < endi - 4; i++)
2848 p = solv->branches.elements[i];
2851 if (solv->decisionmap[p] > l)
2858 if (solv->havedisfavored && solv->favormap[p] < 0)
2860 if (lastsi < 0 && (MAPTST(&solv->recommendsmap, p) || solver_is_supplementing(solv, pool->solvables + p)))
2865 /* we have a recommended package that could not be installed */
2866 /* find current selection and take new one if it is not recommended */
2867 for (i = starti; i < endi - 4; i++)
2869 p = -solv->branches.elements[i];
2870 if (p <= 0 || solv->decisionmap[p] != l + 1)
2872 if (solv->favormap && solv->favormap[p] > solv->favormap[solv->branches.elements[lastsi]])
2873 continue; /* current selection is more favored */
2874 if (!(MAPTST(&solv->recommendsmap, p) || solver_is_supplementing(solv, pool->solvables + p)))
2886 minimizationsteps++;
2887 level = takebranch(solv, lasti, lastiend, "minimizing", disablerules);
2888 continue; /* back to main loop */
2891 /* no minimization found, we're finally finished! */
2894 assert(level == -1 || level + 1 == solv->decisionq_reason.count);
2896 POOL_DEBUG(SOLV_DEBUG_STATS, "solver statistics: %d learned rules, %d unsolvable, %d minimization steps\n", solv->stats_learned, solv->stats_unsolvable, minimizationsteps);
2898 POOL_DEBUG(SOLV_DEBUG_STATS, "done solving.\n\n");
2902 solver_printdecisionq(solv, SOLV_DEBUG_RESULT);
2907 /*-------------------------------------------------------------------
2909 * remove disabled conflicts
2911 * purpose: update the decisionmap after some rules were disabled.
2912 * this is used to calculate the suggested/recommended package list.
2913 * Also returns a "removed" list to undo the discisionmap changes.
2917 removedisabledconflicts(Solver *solv, Queue *removed)
2919 Pool *pool = solv->pool;
2924 Id *decisionmap = solv->decisionmap;
2926 queue_empty(removed);
2927 for (i = 0; i < solv->decisionq.count; i++)
2929 p = solv->decisionq.elements[i];
2931 continue; /* conflicts only, please */
2932 why = solv->decisionq_why.elements[i];
2935 /* no rule involved, must be a orphan package drop */
2938 /* we never do conflicts on free decisions, so there
2939 * must have been an unit rule */
2941 r = solv->rules + why;
2942 if (r->d < 0 && decisionmap[-p])
2944 /* rule is now disabled, remove from decisionmap */
2945 POOL_DEBUG(SOLV_DEBUG_SOLVER, "removing conflict for package %s[%d]\n", pool_solvid2str(pool, -p), -p);
2946 queue_push(removed, -p);
2947 queue_push(removed, decisionmap[-p]);
2948 decisionmap[-p] = 0;
2951 if (!removed->count)
2953 /* we removed some confliced packages. some of them might still
2954 * be in conflict, so search for unit rules and re-conflict */
2956 for (i = n = 1, r = solv->rules + i; n < solv->nrules; i++, r++, n++)
2958 if (i == solv->nrules)
2961 r = solv->rules + i;
2967 if (r->p < 0 && !decisionmap[-r->p])
2973 if (r->p < 0 && decisionmap[-r->p] == 0 && DECISIONMAP_FALSE(r->w2))
2975 else if (r->w2 < 0 && decisionmap[-r->w2] == 0 && DECISIONMAP_FALSE(r->p))
2980 if (r->p < 0 && decisionmap[-r->p] == 0)
2982 if (new || DECISIONMAP_FALSE(r->p))
2984 dp = pool->whatprovidesdata + r->d;
2985 while ((p = *dp++) != 0)
2987 if (new && p == new)
2989 if (p < 0 && decisionmap[-p] == 0)
2998 else if (!DECISIONMAP_FALSE(p))
3008 POOL_DEBUG(SOLV_DEBUG_SOLVER, "re-conflicting package %s[%d]\n", pool_solvid2str(pool, -new), -new);
3009 decisionmap[-new] = -1;
3011 n = 0; /* redo all rules */
3017 undo_removedisabledconflicts(Solver *solv, Queue *removed)
3020 for (i = 0; i < removed->count; i += 2)
3021 solv->decisionmap[removed->elements[i]] = removed->elements[i + 1];
3025 /*-------------------------------------------------------------------
3027 * weaken solvable dependencies
3031 weaken_solvable_deps(Solver *solv, Id p)
3036 for (i = 1, r = solv->rules + i; i < solv->pkgrules_end; i++, r++)
3040 if ((r->d == 0 || r->d == -1) && r->w2 < 0)
3041 continue; /* conflict */
3042 queue_push(&solv->weakruleq, i);
3047 /********************************************************************/
3052 solver_calculate_multiversionmap(Pool *pool, Queue *job, Map *multiversionmap)
3055 Id how, what, select;
3057 for (i = 0; i < job->count; i += 2)
3059 how = job->elements[i];
3060 if ((how & SOLVER_JOBMASK) != SOLVER_MULTIVERSION)
3062 what = job->elements[i + 1];
3063 select = how & SOLVER_SELECTMASK;
3064 if (!multiversionmap->size)
3065 map_grow(multiversionmap, pool->nsolvables);
3066 if (select == SOLVER_SOLVABLE_ALL)
3068 FOR_POOL_SOLVABLES(p)
3069 MAPSET(multiversionmap, p);
3071 else if (select == SOLVER_SOLVABLE_REPO)
3074 Repo *repo = pool_id2repo(pool, what);
3077 FOR_REPO_SOLVABLES(repo, p, s)
3078 MAPSET(multiversionmap, p);
3081 FOR_JOB_SELECT(p, pp, select, what)
3082 MAPSET(multiversionmap, p);
3087 solver_calculate_noobsmap(Pool *pool, Queue *job, Map *multiversionmap)
3089 solver_calculate_multiversionmap(pool, job, multiversionmap);
3093 * add a rule created by a job, record job number and weak flag
3096 solver_addjobrule(Solver *solv, Id p, Id p2, Id d, Id job, int weak)
3098 solver_addrule(solv, p, p2, d);
3099 queue_push(&solv->ruletojob, job);
3101 queue_push(&solv->weakruleq, solv->nrules - 1);
3105 add_cleandeps_updatepkg(Solver *solv, Id p)
3107 if (!solv->cleandeps_updatepkgs)
3109 solv->cleandeps_updatepkgs = solv_calloc(1, sizeof(Queue));
3110 queue_init(solv->cleandeps_updatepkgs);
3112 queue_pushunique(solv->cleandeps_updatepkgs, p);
3116 add_update_target(Solver *solv, Id p, Id how)
3118 Pool *pool = solv->pool;
3119 Solvable *s = pool->solvables + p;
3120 Repo *installed = solv->installed;
3121 Id pi, pip, identicalp;
3122 int startcnt, endcnt;
3124 if (!solv->update_targets)
3126 solv->update_targets = solv_calloc(1, sizeof(Queue));
3127 queue_init(solv->update_targets);
3129 if (s->repo == installed)
3131 queue_push2(solv->update_targets, p, p);
3132 FOR_PROVIDES(pi, pip, s->name)
3134 Solvable *si = pool->solvables + pi;
3135 if (si->repo == installed && si->name == s->name && pi != p)
3136 queue_push2(solv->update_targets, pi, p);
3141 startcnt = solv->update_targets->count;
3142 FOR_PROVIDES(pi, pip, s->name)
3144 Solvable *si = pool->solvables + pi;
3145 if (si->repo != installed || si->name != s->name)
3147 if (how & SOLVER_FORCEBEST)
3149 if (!solv->bestupdatemap.size)
3150 map_grow(&solv->bestupdatemap, installed->end - installed->start);
3151 MAPSET(&solv->bestupdatemap, pi - installed->start);
3153 if (how & SOLVER_CLEANDEPS)
3154 add_cleandeps_updatepkg(solv, pi);
3155 queue_push2(solv->update_targets, pi, p);
3156 /* remember an installed package that is identical to p */
3157 if (s->evr == si->evr && solvable_identical(s, si))
3162 Id obs, *obsp = s->repo->idarraydata + s->obsoletes;
3163 while ((obs = *obsp++) != 0)
3165 FOR_PROVIDES(pi, pip, obs)
3167 Solvable *si = pool->solvables + pi;
3168 if (si->repo != installed)
3170 if (si->name == s->name)
3171 continue; /* already handled above */
3172 if (!pool->obsoleteusesprovides && !pool_match_nevr(pool, si, obs))
3174 if (pool->obsoleteusescolors && !pool_colormatch(pool, s, si))
3176 if (how & SOLVER_FORCEBEST)
3178 if (!solv->bestupdatemap.size)
3179 map_grow(&solv->bestupdatemap, installed->end - installed->start);
3180 MAPSET(&solv->bestupdatemap, pi - installed->start);
3182 if (how & SOLVER_CLEANDEPS)
3183 add_cleandeps_updatepkg(solv, pi);
3184 queue_push2(solv->update_targets, pi, p);
3188 /* also allow upgrading to an identical installed package */
3191 for (endcnt = solv->update_targets->count; startcnt < endcnt; startcnt += 2)
3192 queue_push2(solv->update_targets, solv->update_targets->elements[startcnt], identicalp);
3197 transform_update_targets_sortfn(const void *ap, const void *bp, void *dp)
3207 transform_update_targets(Solver *solv)
3209 Repo *installed = solv->installed;
3210 Queue *update_targets = solv->update_targets;
3212 Id p, q, lastp, lastq;
3214 if (!update_targets->count)
3216 queue_free(update_targets);
3217 solv->update_targets = solv_free(update_targets);
3220 if (update_targets->count > 2)
3221 solv_sort(update_targets->elements, update_targets->count >> 1, 2 * sizeof(Id), transform_update_targets_sortfn, solv);
3222 queue_insertn(update_targets, 0, installed->end - installed->start, 0);
3224 for (i = j = installed->end - installed->start; i < update_targets->count; i += 2)
3226 if ((p = update_targets->elements[i]) != lastp)
3228 if (!solv->updatemap.size)
3229 map_grow(&solv->updatemap, installed->end - installed->start);
3230 MAPSET(&solv->updatemap, p - installed->start);
3231 update_targets->elements[j++] = 0; /* finish old set */
3232 update_targets->elements[p - installed->start] = j; /* start new set */
3236 if ((q = update_targets->elements[i + 1]) != lastq)
3238 update_targets->elements[j++] = q;
3242 queue_truncate(update_targets, j);
3243 queue_push(update_targets, 0); /* finish last set */
3248 addedmap2deduceq(Solver *solv, Map *addedmap)
3250 Pool *pool = solv->pool;
3255 queue_empty(&solv->addedmap_deduceq);
3256 for (i = 2, j = solv->pkgrules_end - 1; i < pool->nsolvables && j > 0; j--)
3258 r = solv->rules + j;
3261 if ((r->d == 0 || r->d == -1) && r->w2 < 0)
3264 if (!MAPTST(addedmap, p))
3266 /* this can happen with complex dependencies that have more than one pos literal */
3267 if (!solv->addedmap_deduceq.count || solv->addedmap_deduceq.elements[solv->addedmap_deduceq.count - 1] != -p)
3268 queue_push(&solv->addedmap_deduceq, -p);
3272 if (MAPTST(addedmap, i))
3273 queue_push(&solv->addedmap_deduceq, i);
3277 for (; i < pool->nsolvables; i++)
3278 if (MAPTST(addedmap, i))
3279 queue_push(&solv->addedmap_deduceq, i);
3283 deduceq2addedmap(Solver *solv, Map *addedmap)
3288 for (j = solv->pkgrules_end - 1; j > 0; j--)
3290 r = solv->rules + j;
3291 if (r->d < 0 && r->p)
3292 solver_enablerule(solv, r);
3295 if ((r->d == 0 || r->d == -1) && r->w2 < 0)
3298 MAPSET(addedmap, p);
3300 for (j = 0; j < solv->addedmap_deduceq.count; j++)
3302 p = solv->addedmap_deduceq.elements[j];
3304 MAPSET(addedmap, p);
3306 MAPCLR(addedmap, -p);
3310 #ifdef ENABLE_COMPLEX_DEPS
3312 add_complex_jobrules(Solver *solv, Id dep, int flags, int jobidx, int weak)
3314 Pool *pool = solv->pool;
3319 i = pool_normalize_complex_dep(pool, dep, &bq, flags | CPLXDEPS_EXPAND);
3320 if (i == 0 || i == 1)
3324 solver_addjobrule(solv, -SYSTEMSOLVABLE, 0, 0, jobidx, weak);
3327 for (i = 0; i < bq.count; i++)
3329 if (!bq.elements[i])
3331 for (j = 0; bq.elements[i + j + 1]; j++)
3334 solver_addjobrule(solv, bq.elements[i], 0, pool_ids2whatprovides(pool, bq.elements + i + 1, j), jobidx, weak);
3336 solver_addjobrule(solv, bq.elements[i], bq.elements[i + 1], 0, jobidx, weak);
3345 solver_add_exclude_from_weak(Solver *solv)
3347 Queue *job = &solv->job;
3348 Pool *pool = solv->pool;
3350 Id p, pp, how, what, select;
3351 for (i = 0; i < job->count; i += 2)
3353 how = job->elements[i];
3354 if ((how & SOLVER_JOBMASK) != SOLVER_EXCLUDEFROMWEAK)
3356 if (!solv->excludefromweakmap.size)
3357 map_grow(&solv->excludefromweakmap, pool->nsolvables);
3358 what = job->elements[i + 1];
3359 select = how & SOLVER_SELECTMASK;
3360 if (select == SOLVER_SOLVABLE_REPO)
3362 Repo *repo = pool_id2repo(pool, what);
3366 FOR_REPO_SOLVABLES(repo, p, s)
3367 MAPSET(&solv->excludefromweakmap, p);
3370 FOR_JOB_SELECT(p, pp, select, what)
3371 MAPSET(&solv->excludefromweakmap, p);
3376 setup_favormap(Solver *solv)
3378 Queue *job = &solv->job;
3379 Pool *pool = solv->pool;
3381 Id p, pp, how, what, select;
3383 solv_free(solv->favormap);
3384 solv->favormap = solv_calloc(pool->nsolvables, sizeof(Id));
3385 for (i = 0; i < job->count; i += 2)
3387 how = job->elements[i];
3388 if ((how & SOLVER_JOBMASK) != SOLVER_FAVOR && (how & SOLVER_JOBMASK) != SOLVER_DISFAVOR)
3390 what = job->elements[i + 1];
3391 select = how & SOLVER_SELECTMASK;
3392 idx = (how & SOLVER_JOBMASK) == SOLVER_FAVOR ? i + 1 : -(i + 1);
3393 if (select == SOLVER_SOLVABLE_REPO)
3395 Repo *repo = pool_id2repo(pool, what);
3399 FOR_REPO_SOLVABLES(repo, p, s)
3401 solv->favormap[p] = idx;
3403 solv->havedisfavored = 1;
3407 FOR_JOB_SELECT(p, pp, select, what)
3409 solv->favormap[p] = idx;
3411 solv->havedisfavored = 1;
3423 solver_solve(Solver *solv, Queue *job)
3425 Pool *pool = solv->pool;
3426 Repo *installed = solv->installed;
3428 int oldnrules, initialnrules;
3429 Map addedmap; /* '1' == have pkg-rules for solvable */
3430 Map installcandidatemap;
3431 Id how, what, select, name, weak, p, pp, d;
3433 Solvable *s, *name_s;
3435 int now, solve_start;
3436 int needduprules = 0;
3437 int hasbestinstalljob = 0;
3438 int hasfavorjob = 0;
3440 int hasblacklistjob = 0;
3441 int hasexcludefromweakjob = 0;
3443 solve_start = solv_timems(0);
3445 /* log solver options */
3446 POOL_DEBUG(SOLV_DEBUG_STATS, "solver started\n");
3447 POOL_DEBUG(SOLV_DEBUG_STATS, "dosplitprovides=%d, noupdateprovide=%d, noinfarchcheck=%d\n", solv->dosplitprovides, solv->noupdateprovide, solv->noinfarchcheck);
3448 POOL_DEBUG(SOLV_DEBUG_STATS, "allowuninstall=%d, allowdowngrade=%d, allownamechange=%d, allowarchchange=%d, allowvendorchange=%d\n", solv->allowuninstall, solv->allowdowngrade, solv->allownamechange, solv->allowarchchange, solv->allowvendorchange);
3449 POOL_DEBUG(SOLV_DEBUG_STATS, "dupallowdowngrade=%d, dupallownamechange=%d, dupallowarchchange=%d, dupallowvendorchange=%d\n", solv->dup_allowdowngrade, solv->dup_allownamechange, solv->dup_allowarchchange, solv->dup_allowvendorchange);
3450 POOL_DEBUG(SOLV_DEBUG_STATS, "promoteepoch=%d, forbidselfconflicts=%d\n", pool->promoteepoch, pool->forbidselfconflicts);
3451 POOL_DEBUG(SOLV_DEBUG_STATS, "obsoleteusesprovides=%d, implicitobsoleteusesprovides=%d, obsoleteusescolors=%d, implicitobsoleteusescolors=%d\n", pool->obsoleteusesprovides, pool->implicitobsoleteusesprovides, pool->obsoleteusescolors, pool->implicitobsoleteusescolors);
3452 POOL_DEBUG(SOLV_DEBUG_STATS, "dontinstallrecommended=%d, addalreadyrecommended=%d onlynamespacerecommended=%d\n", solv->dontinstallrecommended, solv->addalreadyrecommended, solv->only_namespace_recommended);
3454 /* create whatprovides if not already there */
3455 if (!pool->whatprovides)
3456 pool_createwhatprovides(pool);
3458 /* create obsolete index */
3459 policy_create_obsolete_index(solv);
3462 queue_free(&solv->job);
3463 queue_init_clone(&solv->job, job);
3464 solv->pooljobcnt = pool->pooljobs.count;
3465 if (pool->pooljobs.count)
3466 queue_insertn(&solv->job, 0, pool->pooljobs.count, pool->pooljobs.elements);
3469 /* free old stuff in case we re-run a solver */
3470 queuep_free(&solv->update_targets);
3471 queuep_free(&solv->cleandeps_updatepkgs);
3472 queue_empty(&solv->ruleassertions);
3473 solv->bestrules_info = solv_free(solv->bestrules_info);
3474 solv->yumobsrules_info = solv_free(solv->yumobsrules_info);
3475 solv->recommendsrules_info = solv_free(solv->recommendsrules_info);
3476 solv->choicerules_info = solv_free(solv->choicerules_info);
3477 if (solv->noupdate.size)
3478 map_empty(&solv->noupdate);
3479 map_zerosize(&solv->multiversion);
3480 solv->updatemap_all = 0;
3481 map_zerosize(&solv->updatemap);
3482 solv->bestupdatemap_all = 0;
3483 map_zerosize(&solv->bestupdatemap);
3484 solv->fixmap_all = 0;
3485 map_zerosize(&solv->fixmap);
3486 map_zerosize(&solv->dupmap);
3487 map_zerosize(&solv->dupinvolvedmap);
3488 solv->process_orphans = 0;
3489 solv->droporphanedmap_all = 0;
3490 map_zerosize(&solv->droporphanedmap);
3491 solv->allowuninstall_all = 0;
3492 map_zerosize(&solv->allowuninstallmap);
3493 map_zerosize(&solv->excludefromweakmap);
3494 map_zerosize(&solv->cleandepsmap);
3495 map_zerosize(&solv->weakrulemap);
3496 solv->favormap = solv_free(solv->favormap);
3497 queue_empty(&solv->weakruleq);
3498 solv->watches = solv_free(solv->watches);
3499 queue_empty(&solv->ruletojob);
3500 if (solv->decisionq.count)
3501 memset(solv->decisionmap, 0, pool->nsolvables * sizeof(Id));
3502 queue_empty(&solv->decisionq);
3503 queue_empty(&solv->decisionq_why);
3504 queue_empty(&solv->decisionq_reason);
3505 queue_empty(&solv->learnt_why);
3506 queue_empty(&solv->learnt_pool);
3507 queue_empty(&solv->branches);
3508 solv->propagate_index = 0;
3509 queue_empty(&solv->problems);
3510 queue_empty(&solv->solutions);
3511 queue_empty(&solv->orphaned);
3512 solv->stats_learned = solv->stats_unsolvable = 0;
3513 if (solv->recommends_index)
3515 map_empty(&solv->recommendsmap);
3516 map_empty(&solv->suggestsmap);
3517 queuep_free(&solv->recommendscplxq);
3518 queuep_free(&solv->suggestscplxq);
3519 solv->recommends_index = 0;
3521 queuep_free(&solv->brokenorphanrules);
3522 solv->specialupdaters = solv_free(solv->specialupdaters);
3526 * create basic rule set of all involved packages
3527 * use addedmap bitmap to make sure we don't create rules twice
3530 /* create multiversion map if needed */
3531 solver_calculate_multiversionmap(pool, job, &solv->multiversion);
3533 map_init(&addedmap, pool->nsolvables);
3534 MAPSET(&addedmap, SYSTEMSOLVABLE);
3536 map_init(&installcandidatemap, pool->nsolvables);
3539 now = solv_timems(0);
3541 * create rules for all package that could be involved with the solving
3542 * so called: pkg rules
3545 initialnrules = solv->pkgrules_end ? solv->pkgrules_end : 1;
3546 if (initialnrules > 1)
3547 deduceq2addedmap(solv, &addedmap); /* also enables all pkg rules */
3548 if (solv->nrules != initialnrules)
3549 solver_shrinkrules(solv, initialnrules); /* shrink to just pkg rules */
3550 solv->lastpkgrule = 0;
3551 solv->pkgrules_end = 0;
3555 /* check for update/verify jobs as they need to be known early */
3556 /* also setup the droporphaned map, we need it when creating update rules */
3557 for (i = 0; i < job->count; i += 2)
3559 how = job->elements[i];
3560 what = job->elements[i + 1];
3561 select = how & SOLVER_SELECTMASK;
3562 switch (how & SOLVER_JOBMASK)
3565 if (select == SOLVER_SOLVABLE_ALL || (select == SOLVER_SOLVABLE_REPO && installed && what == installed->repoid))
3566 solv->fixmap_all = 1;
3567 FOR_JOB_SELECT(p, pp, select, what)
3569 s = pool->solvables + p;
3570 if (s->repo != installed)
3572 if (!solv->fixmap.size)
3573 map_grow(&solv->fixmap, installed->end - installed->start);
3574 MAPSET(&solv->fixmap, p - installed->start);
3578 if (select == SOLVER_SOLVABLE_ALL)
3580 solv->updatemap_all = 1;
3581 if (how & SOLVER_FORCEBEST)
3582 solv->bestupdatemap_all = 1;
3583 if (how & SOLVER_CLEANDEPS)
3585 FOR_REPO_SOLVABLES(installed, p, s)
3586 add_cleandeps_updatepkg(solv, p);
3589 else if (select == SOLVER_SOLVABLE_REPO)
3591 Repo *repo = pool_id2repo(pool, what);
3594 if (repo == installed && !(how & SOLVER_TARGETED))
3596 solv->updatemap_all = 1;
3597 if (how & SOLVER_FORCEBEST)
3598 solv->bestupdatemap_all = 1;
3599 if (how & SOLVER_CLEANDEPS)
3601 FOR_REPO_SOLVABLES(installed, p, s)
3602 add_cleandeps_updatepkg(solv, p);
3606 if (solv->noautotarget && !(how & SOLVER_TARGETED))
3608 /* targeted update */
3609 FOR_REPO_SOLVABLES(repo, p, s)
3610 add_update_target(solv, p, how);
3614 if (!(how & SOLVER_TARGETED))
3617 FOR_JOB_SELECT(p, pp, select, what)
3619 s = pool->solvables + p;
3620 if (s->repo != installed)
3622 if (!solv->updatemap.size)
3623 map_grow(&solv->updatemap, installed->end - installed->start);
3624 MAPSET(&solv->updatemap, p - installed->start);
3625 if (how & SOLVER_FORCEBEST)
3627 if (!solv->bestupdatemap.size)
3628 map_grow(&solv->bestupdatemap, installed->end - installed->start);
3629 MAPSET(&solv->bestupdatemap, p - installed->start);
3631 if (how & SOLVER_CLEANDEPS)
3632 add_cleandeps_updatepkg(solv, p);
3635 if (!targeted || solv->noautotarget)
3638 FOR_JOB_SELECT(p, pp, select, what)
3639 add_update_target(solv, p, how);
3642 case SOLVER_DROP_ORPHANED:
3643 if (select == SOLVER_SOLVABLE_ALL || (select == SOLVER_SOLVABLE_REPO && installed && what == installed->repoid))
3644 solv->droporphanedmap_all = 1;
3645 FOR_JOB_SELECT(p, pp, select, what)
3647 s = pool->solvables + p;
3648 if (s->repo != installed)
3650 if (!solv->droporphanedmap.size)
3651 map_grow(&solv->droporphanedmap, installed->end - installed->start);
3652 MAPSET(&solv->droporphanedmap, p - installed->start);
3655 case SOLVER_ALLOWUNINSTALL:
3656 if (select == SOLVER_SOLVABLE_ALL || (select == SOLVER_SOLVABLE_REPO && installed && what == installed->repoid))
3657 solv->allowuninstall_all = 1;
3658 FOR_JOB_SELECT(p, pp, select, what)
3660 s = pool->solvables + p;
3661 if (s->repo != installed)
3663 if (!solv->allowuninstallmap.size)
3664 map_grow(&solv->allowuninstallmap, installed->end - installed->start);
3665 MAPSET(&solv->allowuninstallmap, p - installed->start);
3673 if (solv->update_targets)
3674 transform_update_targets(solv);
3676 oldnrules = solv->nrules;
3677 FOR_REPO_SOLVABLES(installed, p, s)
3678 solver_addpkgrulesforsolvable(solv, s, &addedmap);
3679 POOL_DEBUG(SOLV_DEBUG_STATS, "added %d pkg rules for installed solvables\n", solv->nrules - oldnrules);
3680 oldnrules = solv->nrules;
3681 FOR_REPO_SOLVABLES(installed, p, s)
3682 solver_addpkgrulesforupdaters(solv, s, &addedmap, 1);
3683 POOL_DEBUG(SOLV_DEBUG_STATS, "added %d pkg rules for updaters of installed solvables\n", solv->nrules - oldnrules);
3687 * create rules for all packages involved in the job
3688 * (to be installed or removed)
3691 oldnrules = solv->nrules;
3692 for (i = 0; i < job->count; i += 2)
3694 how = job->elements[i];
3695 what = job->elements[i + 1];
3696 select = how & SOLVER_SELECTMASK;
3698 switch (how & SOLVER_JOBMASK)
3700 case SOLVER_INSTALL:
3701 FOR_JOB_SELECT(p, pp, select, what)
3703 MAPSET(&installcandidatemap, p);
3704 solver_addpkgrulesforsolvable(solv, pool->solvables + p, &addedmap);
3707 case SOLVER_DISTUPGRADE:
3709 if (select == SOLVER_SOLVABLE_ALL)
3710 solv->process_orphans = 1;
3716 POOL_DEBUG(SOLV_DEBUG_STATS, "added %d pkg rules for packages involved in a job\n", solv->nrules - oldnrules);
3720 * add rules for suggests, enhances
3722 oldnrules = solv->nrules;
3723 solver_addpkgrulesforweak(solv, &addedmap);
3724 POOL_DEBUG(SOLV_DEBUG_STATS, "added %d pkg rules because of weak dependencies\n", solv->nrules - oldnrules);
3726 #ifdef ENABLE_LINKED_PKGS
3727 oldnrules = solv->nrules;
3728 solver_addpkgrulesforlinked(solv, &addedmap);
3729 POOL_DEBUG(SOLV_DEBUG_STATS, "added %d pkg rules because of linked packages\n", solv->nrules - oldnrules);
3733 * first pass done, we now have all the pkg rules we need.
3734 * unify existing rules before going over all job rules and
3736 * at this point the system is always solvable,
3737 * as an empty system (remove all packages) is a valid solution
3740 IF_POOLDEBUG (SOLV_DEBUG_STATS)
3742 int possible = 0, installable = 0;
3743 for (i = 1; i < pool->nsolvables; i++)
3745 if (pool_installable(pool, pool->solvables + i))
3747 if (MAPTST(&addedmap, i))
3750 POOL_DEBUG(SOLV_DEBUG_STATS, "%d of %d installable solvables considered for solving\n", possible, installable);
3753 if (solv->nrules > initialnrules)
3754 solver_unifyrules(solv); /* remove duplicate pkg rules */
3755 solv->pkgrules_end = solv->nrules; /* mark end of pkg rules */
3756 solv->lastpkgrule = 0;
3758 if (solv->nrules > initialnrules)
3759 addedmap2deduceq(solv, &addedmap); /* so that we can recreate the addedmap */
3761 POOL_DEBUG(SOLV_DEBUG_STATS, "pkg rule memory used: %d K\n", solv->nrules * (int)sizeof(Rule) / 1024);
3762 POOL_DEBUG(SOLV_DEBUG_STATS, "pkg rule creation took %d ms\n", solv_timems(now));
3764 /* create dup maps if needed. We need the maps early to create our
3767 solver_createdupmaps(solv);
3770 * create feature rules
3772 * foreach installed:
3773 * create assertion (keep installed, if no update available)
3775 * create update rule (A|update1(A)|update2(A)|...)
3777 * those are used later on to keep a version of the installed packages in
3781 solv->featurerules = solv->nrules; /* mark start of feature rules */
3784 /* foreach possibly installed solvable */
3785 for (i = installed->start, s = pool->solvables + i; i < installed->end; i++, s++)
3787 if (s->repo != installed)
3789 solver_addrule(solv, 0, 0, 0); /* create dummy rule */
3792 solver_addfeaturerule(solv, s);
3794 /* make sure we accounted for all rules */
3795 assert(solv->nrules - solv->featurerules == installed->end - installed->start);
3797 solv->featurerules_end = solv->nrules;
3800 * Add update rules for installed solvables
3802 * almost identical to feature rules
3803 * except that downgrades/archchanges/vendorchanges are not allowed
3806 solv->updaterules = solv->nrules;
3809 { /* foreach installed solvables */
3810 /* we create all update rules, but disable some later on depending on the job */
3811 for (i = installed->start, s = pool->solvables + i; i < installed->end; i++, s++)
3815 if (s->repo != installed)
3817 solver_addrule(solv, 0, 0, 0); /* create dummy rule */
3820 solver_addupdaterule(solv, s);
3822 * check for and remove duplicate
3824 r = solv->rules + solv->nrules - 1; /* r: update rule */
3825 sr = r - (installed->end - installed->start); /* sr: feature rule */
3829 memset(sr, 0, sizeof(*sr)); /* no feature rules without update rules */
3832 /* it's also orphaned if the feature rule consists just of the installed package */
3833 if (!solv->process_orphans && sr->p == i && !sr->d && !sr->w2)
3834 queue_push(&solv->orphaned, i);
3836 if (!solver_rulecmp(solv, r, sr))
3837 memset(sr, 0, sizeof(*sr)); /* delete unneeded feature rule */
3839 solver_disablerule(solv, sr); /* disable feature rule for now */
3841 /* consistency check: we added a rule for _every_ installed solvable */
3842 assert(solv->nrules - solv->updaterules == installed->end - installed->start);
3844 solv->updaterules_end = solv->nrules;
3848 * now add all job rules
3851 solv->jobrules = solv->nrules;
3852 for (i = 0; i < job->count; i += 2)
3854 oldnrules = solv->nrules;
3856 if (i && i == solv->pooljobcnt)
3857 POOL_DEBUG(SOLV_DEBUG_JOB, "end of pool jobs\n");
3858 how = job->elements[i];
3859 what = job->elements[i + 1];
3860 weak = how & SOLVER_WEAK;
3861 select = how & SOLVER_SELECTMASK;
3862 switch (how & SOLVER_JOBMASK)
3864 case SOLVER_INSTALL:
3865 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %sinstall %s\n", weak ? "weak " : "", solver_select2str(pool, select, what));
3866 if ((how & SOLVER_CLEANDEPS) != 0 && !solv->cleandepsmap.size && installed)
3867 map_grow(&solv->cleandepsmap, installed->end - installed->start);
3868 if (select == SOLVER_SOLVABLE)
3873 #ifdef ENABLE_COMPLEX_DEPS
3874 else if ((select == SOLVER_SOLVABLE_PROVIDES || select == SOLVER_SOLVABLE_NAME) && pool_is_complex_dep(pool, what))
3876 if (add_complex_jobrules(solv, what, select == SOLVER_SOLVABLE_NAME ? CPLXDEPS_NAME : 0, i, weak))
3877 if (how & SOLVER_FORCEBEST)
3878 hasbestinstalljob = 1;
3885 FOR_JOB_SELECT(p, pp, select, what)
3889 if (select == SOLVER_SOLVABLE_ONE_OF)
3890 break; /* ignore empty installs */
3891 /* no candidate found or unsupported, make this an impossible rule */
3892 queue_push(&q, -SYSTEMSOLVABLE);
3894 p = queue_shift(&q); /* get first candidate */
3895 d = !q.count ? 0 : pool_queuetowhatprovides(pool, &q); /* internalize */
3897 /* force install of namespace supplements hack */
3898 if (select == SOLVER_SOLVABLE_PROVIDES && !d && (p == SYSTEMSOLVABLE || p == -SYSTEMSOLVABLE) && ISRELDEP(what))
3900 Reldep *rd = GETRELDEP(pool, what);
3901 if (rd->flags == REL_NAMESPACE)
3904 if (!solv->installsuppdepq)
3906 solv->installsuppdepq = solv_calloc(1, sizeof(Queue));
3907 queue_init(solv->installsuppdepq);
3909 queue_pushunique(solv->installsuppdepq, rd->evr == 0 ? rd->name : what);
3912 solver_addjobrule(solv, p, 0, d, i, weak);
3913 if (how & SOLVER_FORCEBEST)
3914 hasbestinstalljob = 1;
3917 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %s%serase %s\n", weak ? "weak " : "", how & SOLVER_CLEANDEPS ? "clean deps " : "", solver_select2str(pool, select, what));
3918 if ((how & SOLVER_CLEANDEPS) != 0 && !solv->cleandepsmap.size && installed)
3919 map_grow(&solv->cleandepsmap, installed->end - installed->start);
3920 /* specific solvable: by id or by nevra */
3921 name = (select == SOLVER_SOLVABLE || (select == SOLVER_SOLVABLE_NAME && ISRELDEP(what))) ? 0 : -1;
3923 if (select == SOLVER_SOLVABLE_ALL) /* hmmm ;) */
3925 FOR_POOL_SOLVABLES(p)
3926 solver_addjobrule(solv, -p, 0, 0, i, weak);
3928 else if (select == SOLVER_SOLVABLE_REPO)
3930 Repo *repo = pool_id2repo(pool, what);
3933 FOR_REPO_SOLVABLES(repo, p, s)
3934 solver_addjobrule(solv, -p, 0, 0, i, weak);
3937 #ifdef ENABLE_COMPLEX_DEPS
3938 else if ((select == SOLVER_SOLVABLE_PROVIDES || select == SOLVER_SOLVABLE_NAME) && pool_is_complex_dep(pool, what))
3940 /* no special "erase a specific solvable" handling? */
3941 add_complex_jobrules(solv, what, select == SOLVER_SOLVABLE_NAME ? (CPLXDEPS_NAME | CPLXDEPS_TODNF | CPLXDEPS_INVERT) : (CPLXDEPS_TODNF | CPLXDEPS_INVERT), i, weak);
3945 FOR_JOB_SELECT(p, pp, select, what)
3947 s = pool->solvables + p;
3948 if (installed && s->repo == installed)
3950 name = !name ? s->name : -1;
3953 solver_addjobrule(solv, -p, 0, 0, i, weak);
3954 #ifdef ENABLE_LINKED_PKGS
3955 if (solv->instbuddy && installed && s->repo == installed && solv->instbuddy[p - installed->start] > 1)
3956 solver_addjobrule(solv, -solv->instbuddy[p - installed->start], 0, 0, i, weak);
3959 /* special case for "erase a specific solvable": we also
3960 * erase all other solvables with that name, so that they
3961 * don't get picked up as replacement.
3962 * name is > 0 if exactly one installed solvable matched.
3964 /* XXX: look also at packages that obsolete this package? */
3969 FOR_PROVIDES(p, pp, name)
3971 s = pool->solvables + p;
3972 if (s->name != name)
3974 /* keep other versions installed */
3975 if (s->repo == installed)
3977 /* keep installcandidates of other jobs */
3978 if (MAPTST(&installcandidatemap, p))
3980 if (pool->implicitobsoleteusescolors && !pool_colormatch(pool, name_s, s))
3982 /* don't add the same rule twice */
3983 for (j = oldnrules; j < k; j++)
3984 if (solv->rules[j].p == -p)
3987 solver_addjobrule(solv, -p, 0, 0, i, weak); /* remove by id */
3993 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %supdate %s\n", weak ? "weak " : "", solver_select2str(pool, select, what));
3996 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %sverify %s\n", weak ? "weak " : "", solver_select2str(pool, select, what));
3998 case SOLVER_WEAKENDEPS:
3999 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %sweaken deps %s\n", weak ? "weak " : "", solver_select2str(pool, select, what));
4000 if (select != SOLVER_SOLVABLE)
4002 s = pool->solvables + what;
4003 weaken_solvable_deps(solv, what);
4005 case SOLVER_MULTIVERSION:
4006 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %smultiversion %s\n", weak ? "weak " : "", solver_select2str(pool, select, what));
4009 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %slock %s\n", weak ? "weak " : "", solver_select2str(pool, select, what));
4010 if (select == SOLVER_SOLVABLE_ALL)
4012 FOR_POOL_SOLVABLES(p)
4013 solver_addjobrule(solv, installed && pool->solvables[p].repo == installed ? p : -p, 0, 0, i, weak);
4015 else if (select == SOLVER_SOLVABLE_REPO)
4017 Repo *repo = pool_id2repo(pool, what);
4020 FOR_REPO_SOLVABLES(repo, p, s)
4021 solver_addjobrule(solv, installed && pool->solvables[p].repo == installed ? p : -p, 0, 0, i, weak);
4024 FOR_JOB_SELECT(p, pp, select, what)
4026 s = pool->solvables + p;
4027 solver_addjobrule(solv, installed && s->repo == installed ? p : -p, 0, 0, i, weak);
4028 #ifdef ENABLE_LINKED_PKGS
4029 if (solv->instbuddy && installed && s->repo == installed && solv->instbuddy[p - installed->start] > 1)
4030 solver_addjobrule(solv, solv->instbuddy[p - installed->start], 0, 0, i, weak);
4033 if (solv->nrules != oldnrules)
4036 case SOLVER_DISTUPGRADE:
4037 POOL_DEBUG(SOLV_DEBUG_JOB, "job: distupgrade %s\n", solver_select2str(pool, select, what));
4039 case SOLVER_DROP_ORPHANED:
4040 POOL_DEBUG(SOLV_DEBUG_JOB, "job: drop orphaned %s\n", solver_select2str(pool, select, what));
4042 case SOLVER_USERINSTALLED:
4043 POOL_DEBUG(SOLV_DEBUG_JOB, "job: user installed %s\n", solver_select2str(pool, select, what));
4045 case SOLVER_ALLOWUNINSTALL:
4046 POOL_DEBUG(SOLV_DEBUG_JOB, "job: allowuninstall %s\n", solver_select2str(pool, select, what));
4049 case SOLVER_DISFAVOR:
4050 POOL_DEBUG(SOLV_DEBUG_JOB, "job: %s %s\n", (how & SOLVER_JOBMASK) == SOLVER_FAVOR ? "favor" : "disfavor", solver_select2str(pool, select, what));
4053 case SOLVER_BLACKLIST:
4054 POOL_DEBUG(SOLV_DEBUG_JOB, "job: blacklist %s\n", solver_select2str(pool, select, what));
4055 hasblacklistjob = 1;
4057 case SOLVER_EXCLUDEFROMWEAK:
4058 POOL_DEBUG(SOLV_DEBUG_JOB, "job: excludefromweak %s\n", solver_select2str(pool, select, what));
4059 hasexcludefromweakjob = 1;
4062 POOL_DEBUG(SOLV_DEBUG_JOB, "job: unknown job\n");
4066 IF_POOLDEBUG (SOLV_DEBUG_JOB)
4069 if (solv->nrules == oldnrules)
4070 POOL_DEBUG(SOLV_DEBUG_JOB, " - no rule created\n");
4071 for (j = oldnrules; j < solv->nrules; j++)
4073 POOL_DEBUG(SOLV_DEBUG_JOB, " - job ");
4074 solver_printrule(solv, SOLV_DEBUG_JOB, solv->rules + j);
4078 assert(solv->ruletojob.count == solv->nrules - solv->jobrules);
4079 solv->jobrules_end = solv->nrules;
4081 /* create favormap if we have favor jobs */
4083 setup_favormap(solv);
4085 /* now create infarch and dup rules */
4086 if (!solv->noinfarchcheck)
4087 solver_addinfarchrules(solv, &addedmap);
4089 solv->infarchrules = solv->infarchrules_end = solv->nrules;
4091 if (solv->dupinvolvedmap_all || solv->dupinvolvedmap.size)
4092 solver_addduprules(solv, &addedmap);
4094 solv->duprules = solv->duprules_end = solv->nrules;
4096 #ifdef ENABLE_LINKED_PKGS
4097 if (solv->instbuddy && solv->updatemap.size)
4098 extend_updatemap_to_buddies(solv);
4101 if (solv->bestupdatemap_all || solv->bestupdatemap.size || hasbestinstalljob)
4102 solver_addbestrules(solv, hasbestinstalljob, haslockjob);
4104 solv->bestrules = solv->bestrules_end = solv->bestrules_up = solv->nrules;
4107 solver_freedupmaps(solv); /* no longer needed */
4109 if (solv->do_yum_obsoletes)
4110 solver_addyumobsrules(solv);
4112 solv->yumobsrules = solv->yumobsrules_end = solv->nrules;
4114 if (hasblacklistjob)
4115 solver_addblackrules(solv);
4117 solv->blackrules = solv->blackrules_end = solv->nrules;
4119 if (hasexcludefromweakjob)
4120 solver_add_exclude_from_weak(solv);
4122 if (solv->havedisfavored && solv->strongrecommends && solv->recommendsruleq)
4123 solver_addrecommendsrules(solv);
4125 solv->recommendsrules = solv->recommendsrules_end = solv->nrules;
4128 solver_addchoicerules(solv);
4130 solv->choicerules = solv->choicerules_end = solv->nrules;
4132 /* all rules created
4133 * --------------------------------------------------------------
4134 * prepare for solving
4137 /* free unneeded memory */
4138 map_free(&addedmap);
4139 map_free(&installcandidatemap);
4142 POOL_DEBUG(SOLV_DEBUG_STATS, "%d pkg rules, 2 * %d update rules, %d job rules, %d infarch rules, %d dup rules, %d choice rules, %d best rules, %d yumobs rules\n", solv->pkgrules_end - 1, solv->updaterules_end - solv->updaterules, solv->jobrules_end - solv->jobrules, solv->infarchrules_end - solv->infarchrules, solv->duprules_end - solv->duprules, solv->choicerules_end - solv->choicerules, solv->bestrules_end - solv->bestrules, solv->yumobsrules_end - solv->yumobsrules);
4143 POOL_DEBUG(SOLV_DEBUG_STATS, "overall rule memory used: %d K\n", solv->nrules * (int)sizeof(Rule) / 1024);
4145 /* create weak map */
4146 if (solv->weakruleq.count || solv->recommendsruleq)
4148 map_grow(&solv->weakrulemap, solv->nrules);
4149 for (i = 0; i < solv->weakruleq.count; i++)
4151 p = solv->weakruleq.elements[i];
4152 MAPSET(&solv->weakrulemap, p);
4154 if (solv->recommendsruleq)
4156 for (i = 0; i < solv->recommendsruleq->count; i++)
4158 p = solv->recommendsruleq->elements[i];
4159 MAPSET(&solv->weakrulemap, p);
4164 /* enable cleandepsmap creation if we have updatepkgs */
4165 if (solv->cleandeps_updatepkgs && !solv->cleandepsmap.size)
4166 map_grow(&solv->cleandepsmap, installed->end - installed->start);
4168 if (solv->cleandeps_mistakes)
4170 queue_free(solv->cleandeps_mistakes);
4171 solv->cleandeps_mistakes = solv_free(solv->cleandeps_mistakes);
4174 /* all new rules are learnt after this point */
4175 solv->learntrules = solv->nrules;
4177 /* create watches chains */
4180 /* create assertion index. it is only used to speed up
4181 * makeruledecsions() a bit */
4182 for (i = 1, r = solv->rules + i; i < solv->nrules; i++, r++)
4183 if (r->p && !r->w2 && (r->d == 0 || r->d == -1))
4184 queue_push(&solv->ruleassertions, i);
4186 /* disable update rules that conflict with our job */
4187 solver_disablepolicyrules(solv);
4189 /* break orphans if requested */
4190 if (solv->process_orphans && solv->orphaned.count && solv->break_orphans)
4191 solver_breakorphans(solv);
4194 * ********************************************
4196 * ********************************************
4199 now = solv_timems(0);
4200 solver_run_sat(solv, 1, solv->dontinstallrecommended ? 0 : 1);
4201 POOL_DEBUG(SOLV_DEBUG_STATS, "solver took %d ms\n", solv_timems(now));
4204 * prepare solution queue if there were problems
4206 solver_prepare_solutions(solv);
4208 POOL_DEBUG(SOLV_DEBUG_STATS, "final solver statistics: %d problems, %d learned rules, %d unsolvable\n", solv->problems.count / 2, solv->stats_learned, solv->stats_unsolvable);
4209 POOL_DEBUG(SOLV_DEBUG_STATS, "solver_solve took %d ms\n", solv_timems(solve_start));
4211 /* return number of problems */
4212 return solv->problems.count ? solv->problems.count / 2 : 0;
4216 solver_create_transaction(Solver *solv)
4218 return transaction_create_decisionq(solv->pool, &solv->decisionq, &solv->multiversion);
4221 void solver_get_orphaned(Solver *solv, Queue *orphanedq)
4223 queue_free(orphanedq);
4224 queue_init_clone(orphanedq, &solv->orphaned);
4227 void solver_get_cleandeps(Solver *solv, Queue *cleandepsq)
4229 Pool *pool = solv->pool;
4230 Repo *installed = solv->installed;
4235 queue_empty(cleandepsq);
4236 if (!installed || !solv->cleandepsmap.size)
4238 FOR_REPO_SOLVABLES(installed, p, s)
4240 if (!MAPTST(&solv->cleandepsmap, p - installed->start) || solv->decisionmap[p] >= 0)
4242 /* now check the update rule */
4243 r = solv->rules + solv->updaterules + (p - solv->installed->start);
4246 FOR_RULELITERALS(pr, pp, r)
4247 if (solv->decisionmap[pr] > 0)
4252 queue_push(cleandepsq, p);
4256 void solver_get_recommendations(Solver *solv, Queue *recommendationsq, Queue *suggestionsq, int noselected)
4258 Pool *pool = solv->pool;
4259 Queue redoq, disabledq;
4265 if (!recommendationsq && !suggestionsq)
4268 map_init(&obsmap, pool->nsolvables);
4269 if (solv->installed)
4271 Id obs, *obsp, p, po, ppo;
4272 for (p = solv->installed->start; p < solv->installed->end; p++)
4274 s = pool->solvables + p;
4275 if (s->repo != solv->installed || !s->obsoletes)
4277 if (solv->decisionmap[p] <= 0)
4279 if (solv->multiversion.size && MAPTST(&solv->multiversion, p))
4281 obsp = s->repo->idarraydata + s->obsoletes;
4282 /* foreach obsoletes */
4283 while ((obs = *obsp++) != 0)
4284 FOR_PROVIDES(po, ppo, obs)
4285 MAPSET(&obsmap, po);
4290 queue_init(&disabledq);
4292 /* disable all erase jobs (including weak "keep uninstalled" rules) */
4293 for (i = solv->jobrules, r = solv->rules + i; i < solv->jobrules_end; i++, r++)
4295 if (r->d < 0) /* disabled ? */
4297 if (r->p >= 0) /* install job? */
4299 queue_push(&disabledq, i);
4300 solver_disablerule(solv, r);
4306 enabledisablelearntrules(solv);
4307 removedisabledconflicts(solv, &redoq);
4311 * find recommended packages
4313 if (recommendationsq)
4315 Id rec, *recp, p, pp;
4317 queue_empty(recommendationsq);
4318 /* create map of all recommened packages */
4319 solv->recommends_index = -1;
4320 MAPZERO(&solv->recommendsmap);
4322 /* put all packages the solver already chose in the map */
4323 for (i = 1; i < solv->decisionq.count; i++)
4324 if ((p = solv->decisionq.elements[i]) > 0 && solv->decisionq_why.elements[i] == 0)
4326 if (solv->decisionq_reason.elements[solv->decisionmap[p]] == SOLVER_REASON_WEAKDEP)
4327 MAPSET(&solv->recommendsmap, p);
4330 for (i = 0; i < solv->decisionq.count; i++)
4332 p = solv->decisionq.elements[i];
4335 s = pool->solvables + p;
4338 recp = s->repo->idarraydata + s->recommends;
4339 while ((rec = *recp++) != 0)
4341 #ifdef ENABLE_COMPLEX_DEPS
4342 if (pool_is_complex_dep(pool, rec))
4344 do_complex_recommendations(solv, rec, &solv->recommendsmap, noselected);
4348 FOR_PROVIDES(p, pp, rec)
4349 if (solv->decisionmap[p] > 0)
4355 FOR_PROVIDES(p, pp, rec)
4356 if (solv->decisionmap[p] > 0)
4357 MAPSET(&solv->recommendsmap, p);
4359 continue; /* p != 0: already fulfilled */
4361 FOR_PROVIDES(p, pp, rec)
4362 MAPSET(&solv->recommendsmap, p);
4366 for (i = 1; i < pool->nsolvables; i++)
4368 if (solv->decisionmap[i] < 0)
4370 if (solv->decisionmap[i] > 0 && noselected)
4372 if (MAPTST(&obsmap, i))
4374 s = pool->solvables + i;
4375 if (!MAPTST(&solv->recommendsmap, i))
4377 if (!s->supplements)
4379 if (!pool_installable(pool, s))
4381 if (!solver_is_supplementing(solv, s))
4384 queue_push(recommendationsq, i);
4386 /* we use MODE_SUGGEST here so that repo prio is ignored */
4387 policy_filter_unwanted(solv, recommendationsq, POLICY_MODE_SUGGEST);
4391 * find suggested packages
4396 Id sug, *sugp, p, pp;
4398 queue_empty(suggestionsq);
4399 /* create map of all suggests that are still open */
4400 solv->recommends_index = -1;
4401 MAPZERO(&solv->suggestsmap);
4402 for (i = 0; i < solv->decisionq.count; i++)
4404 p = solv->decisionq.elements[i];
4407 s = pool->solvables + p;
4410 sugp = s->repo->idarraydata + s->suggests;
4411 while ((sug = *sugp++) != 0)
4413 #ifdef ENABLE_COMPLEX_DEPS
4414 if (pool_is_complex_dep(pool, sug))
4416 do_complex_recommendations(solv, sug, &solv->suggestsmap, noselected);
4420 FOR_PROVIDES(p, pp, sug)
4421 if (solv->decisionmap[p] > 0)
4427 FOR_PROVIDES(p, pp, sug)
4428 if (solv->decisionmap[p] > 0)
4429 MAPSET(&solv->suggestsmap, p);
4431 continue; /* already fulfilled */
4433 FOR_PROVIDES(p, pp, sug)
4434 MAPSET(&solv->suggestsmap, p);
4438 for (i = 1; i < pool->nsolvables; i++)
4440 if (solv->decisionmap[i] < 0)
4442 if (solv->decisionmap[i] > 0 && noselected)
4444 if (MAPTST(&obsmap, i))
4446 s = pool->solvables + i;
4447 if (!MAPTST(&solv->suggestsmap, i))
4451 if (!pool_installable(pool, s))
4453 if (!solver_is_enhancing(solv, s))
4456 queue_push(suggestionsq, i);
4458 policy_filter_unwanted(solv, suggestionsq, POLICY_MODE_SUGGEST);
4461 /* undo removedisabledconflicts */
4463 undo_removedisabledconflicts(solv, &redoq);
4466 /* undo job rule disabling */
4467 for (i = 0; i < disabledq.count; i++)
4468 solver_enablerule(solv, solv->rules + disabledq.elements[i]);
4469 queue_free(&disabledq);
4474 /***********************************************************************/
4475 /* disk usage computations */
4477 /*-------------------------------------------------------------------
4479 * calculate DU changes
4483 solver_calc_duchanges(Solver *solv, DUChanges *mps, int nmps)
4487 solver_create_state_maps(solv, &installedmap, 0);
4488 pool_calc_duchanges(solv->pool, &installedmap, mps, nmps);
4489 map_free(&installedmap);
4493 /*-------------------------------------------------------------------
4495 * calculate changes in install size
4499 solver_calc_installsizechange(Solver *solv)
4504 solver_create_state_maps(solv, &installedmap, 0);
4505 change = pool_calc_installsizechange(solv->pool, &installedmap);
4506 map_free(&installedmap);
4511 solver_create_state_maps(Solver *solv, Map *installedmap, Map *conflictsmap)
4513 pool_create_state_maps(solv->pool, &solv->decisionq, installedmap, conflictsmap);
4516 /*-------------------------------------------------------------------
4518 * decision introspection
4522 solver_get_decisionlevel(Solver *solv, Id p)
4524 return solv->decisionmap[p];
4528 solver_get_decisionqueue(Solver *solv, Queue *decisionq)
4530 queue_free(decisionq);
4531 queue_init_clone(decisionq, &solv->decisionq);
4535 solver_get_lastdecisionblocklevel(Solver *solv)
4538 if (solv->decisionq.count == 0)
4540 p = solv->decisionq.elements[solv->decisionq.count - 1];
4543 return solv->decisionmap[p] < 0 ? -solv->decisionmap[p] : solv->decisionmap[p];
4547 solver_get_decisionblock(Solver *solv, int level, Queue *decisionq)
4552 queue_empty(decisionq);
4553 for (i = 0; i < solv->decisionq.count; i++)
4555 p = solv->decisionq.elements[i];
4558 if (solv->decisionmap[p] == level || solv->decisionmap[p] == -level)
4561 if (i == solv->decisionq.count)
4563 for (i = 0; i < solv->decisionq.count; i++)
4565 p = solv->decisionq.elements[i];
4568 if (solv->decisionmap[p] == level || solv->decisionmap[p] == -level)
4569 queue_push(decisionq, p);
4576 solver_describe_decision(Solver *solv, Id p, Id *infop)
4583 if (!solv->decisionmap[p])
4584 return SOLVER_REASON_UNRELATED;
4585 pp = solv->decisionmap[p] < 0 ? -p : p;
4586 for (i = 0; i < solv->decisionq.count; i++)
4587 if (solv->decisionq.elements[i] == pp)
4589 if (i == solv->decisionq.count) /* just in case... */
4590 return SOLVER_REASON_UNRELATED;
4591 why = solv->decisionq_why.elements[i];
4593 *infop = why > 0 ? why : -why;
4595 return SOLVER_REASON_UNIT_RULE;
4596 i = solv->decisionmap[p] >= 0 ? solv->decisionmap[p] : -solv->decisionmap[p];
4597 return solv->decisionq_reason.elements[i];
4602 solver_describe_weakdep_decision(Solver *solv, Id p, Queue *whyq)
4604 Pool *pool = solv->pool;
4606 int level = solv->decisionmap[p];
4613 for (decisionno = 0; decisionno < solv->decisionq.count; decisionno++)
4614 if (solv->decisionq.elements[decisionno] == p)
4616 if (decisionno == solv->decisionq.count)
4618 i = solv->decisionmap[p] >= 0 ? solv->decisionmap[p] : -solv->decisionmap[p];
4619 if (solv->decisionq_reason.elements[i] != SOLVER_REASON_WEAKDEP)
4622 /* 1) list all packages that recommend us */
4623 for (i = 1; i < pool->nsolvables; i++)
4625 Id *recp, rec, pp2, p2;
4626 if (solv->decisionmap[i] <= 0 || solv->decisionmap[i] >= level)
4628 s = pool->solvables + i;
4631 if (!solv->addalreadyrecommended && s->repo == solv->installed)
4633 recp = s->repo->idarraydata + s->recommends;
4634 while ((rec = *recp++) != 0)
4637 FOR_PROVIDES(p2, pp2, rec)
4643 /* if p2 is already installed, this recommends is ignored */
4644 if (solv->decisionmap[p2] > 0 && solv->decisionmap[p2] < level)
4650 queue_push(whyq, SOLVER_REASON_RECOMMENDED);
4651 queue_push2(whyq, i, rec);
4655 /* 2) list all supplements */
4656 s = pool->solvables + p;
4657 if (s->supplements && level > 0)
4659 Id *supp, sup, pp2, p2;
4660 /* this is a hack. to use solver_dep_fulfilled we temporarily clear
4661 * everything above our level in the decisionmap */
4662 for (i = decisionno; i < solv->decisionq.count; i++ )
4664 p2 = solv->decisionq.elements[i];
4666 solv->decisionmap[p2] = -solv->decisionmap[p2];
4668 supp = s->repo->idarraydata + s->supplements;
4669 while ((sup = *supp++) != 0)
4670 if (solver_dep_fulfilled(solv, sup))
4673 /* let's see if this is an easy supp */
4674 FOR_PROVIDES(p2, pp2, sup)
4676 if (!solv->addalreadyrecommended && solv->installed)
4678 if (pool->solvables[p2].repo == solv->installed)
4681 if (solv->decisionmap[p2] > 0 && solv->decisionmap[p2] < level)
4683 queue_push(whyq, SOLVER_REASON_SUPPLEMENTED);
4684 queue_push2(whyq, p2, sup);
4690 /* hard case, just note dependency with no package */
4691 queue_push(whyq, SOLVER_REASON_SUPPLEMENTED);
4692 queue_push2(whyq, 0, sup);
4695 for (i = decisionno; i < solv->decisionq.count; i++)
4697 p2 = solv->decisionq.elements[i];
4699 solv->decisionmap[p2] = -solv->decisionmap[p2];
4705 pool_job2solvables(Pool *pool, Queue *pkgs, Id how, Id what)
4708 how &= SOLVER_SELECTMASK;
4710 if (how == SOLVER_SOLVABLE_ALL)
4712 FOR_POOL_SOLVABLES(p)
4713 queue_push(pkgs, p);
4715 else if (how == SOLVER_SOLVABLE_REPO)
4717 Repo *repo = pool_id2repo(pool, what);
4721 FOR_REPO_SOLVABLES(repo, p, s)
4722 queue_push(pkgs, p);
4727 FOR_JOB_SELECT(p, pp, how, what)
4728 queue_push(pkgs, p);
4733 pool_isemptyupdatejob(Pool *pool, Id how, Id what)
4736 Id select = how & SOLVER_SELECTMASK;
4737 if ((how & SOLVER_JOBMASK) != SOLVER_UPDATE)
4739 if (select == SOLVER_SOLVABLE_ALL || select == SOLVER_SOLVABLE_REPO)
4741 if (!pool->installed)
4743 FOR_JOB_SELECT(p, pp, select, what)
4744 if (pool->solvables[p].repo == pool->installed)
4747 FOR_JOB_SELECT(p, pp, select, what)
4749 Solvable *s = pool->solvables + p;
4750 FOR_PROVIDES(pi, pip, s->name)
4752 Solvable *si = pool->solvables + pi;
4753 if (si->repo != pool->installed || si->name != s->name)
4759 Id obs, *obsp = s->repo->idarraydata + s->obsoletes;
4760 while ((obs = *obsp++) != 0)
4762 FOR_PROVIDES(pi, pip, obs)
4764 Solvable *si = pool->solvables + pi;
4765 if (si->repo != pool->installed)
4767 if (!pool->obsoleteusesprovides && !pool_match_nevr(pool, si, obs))
4769 if (pool->obsoleteusescolors && !pool_colormatch(pool, s, si))
4780 solver_alternatives_count(Solver *solv)
4782 Id *elements = solv->branches.elements;
4784 for (res = 0, count = solv->branches.count; count; res++)
4785 count -= elements[count - 2];
4790 solver_get_alternative(Solver *solv, Id alternative, Id *idp, Id *fromp, Id *chosenp, Queue *choices, int *levelp)
4792 int cnt = solver_alternatives_count(solv);
4793 int count = solv->branches.count;
4794 Id *elements = solv->branches.elements;
4796 queue_empty(choices);
4797 if (alternative <= 0 || alternative > cnt)
4800 for (; cnt > alternative; cnt--)
4801 elements -= elements[-2];
4803 *levelp = elements[-1];
4805 *fromp = elements[-4];
4807 *idp = elements[-3];
4812 for (i = elements[-2]; i > 4; i--)
4814 Id p = -elements[-i];
4815 if (p > 0 && solv->decisionmap[p] == elements[-1] + 1)
4823 queue_insertn(choices, 0, elements[-2] - 4, elements - elements[-2]);
4824 return elements[-4] ? SOLVER_ALTERNATIVE_TYPE_RECOMMENDS : SOLVER_ALTERNATIVE_TYPE_RULE;
4828 solver_select2str(Pool *pool, Id select, Id what)
4832 select &= SOLVER_SELECTMASK;
4833 if (select == SOLVER_SOLVABLE)
4834 return pool_solvid2str(pool, what);
4835 if (select == SOLVER_SOLVABLE_NAME)
4836 return pool_dep2str(pool, what);
4837 if (select == SOLVER_SOLVABLE_PROVIDES)
4839 s = pool_dep2str(pool, what);
4840 b = pool_alloctmpspace(pool, 11 + strlen(s));
4841 sprintf(b, "providing %s", s);
4844 if (select == SOLVER_SOLVABLE_ONE_OF)
4848 while ((p = pool->whatprovidesdata[what++]) != 0)
4850 s = pool_solvid2str(pool, p);
4852 b = pool_tmpappend(pool, b, ", ", s);
4854 b = pool_tmpjoin(pool, s, 0, 0);
4855 pool_freetmpspace(pool, s);
4857 return b ? b : "nothing";
4859 if (select == SOLVER_SOLVABLE_REPO)
4861 b = pool_alloctmpspace(pool, 20);
4862 sprintf(b, "repo #%d", what);
4865 if (select == SOLVER_SOLVABLE_ALL)
4866 return "all packages";
4867 return "unknown job select";
4871 pool_job2str(Pool *pool, Id how, Id what, Id flagmask)
4873 Id select = how & SOLVER_SELECTMASK;
4874 const char *strstart = 0, *strend = 0;
4878 switch (how & SOLVER_JOBMASK)
4881 return "do nothing";
4882 case SOLVER_INSTALL:
4883 if (select == SOLVER_SOLVABLE && pool->installed && pool->solvables[what].repo == pool->installed)
4884 strstart = "keep ", strend = " installed";
4885 else if (select == SOLVER_SOLVABLE || select == SOLVER_SOLVABLE_NAME)
4886 strstart = "install ";
4887 else if (select == SOLVER_SOLVABLE_PROVIDES)
4888 strstart = "install a package ";
4890 strstart = "install one of ";
4893 if (select == SOLVER_SOLVABLE && !(pool->installed && pool->solvables[what].repo == pool->installed))
4894 strstart = "keep ", strend = " uninstalled";
4895 else if (select == SOLVER_SOLVABLE_PROVIDES)
4896 strstart = "deinstall all packages ";
4898 strstart = "deinstall ";
4901 strstart = "update ";
4903 case SOLVER_WEAKENDEPS:
4904 strstart = "weaken deps of ";
4906 case SOLVER_MULTIVERSION:
4907 strstart = "multi version ";
4912 case SOLVER_DISTUPGRADE:
4913 strstart = "dist upgrade ";
4916 strstart = "verify ";
4918 case SOLVER_DROP_ORPHANED:
4919 strstart = "deinstall ", strend = " if orphaned";
4921 case SOLVER_USERINSTALLED:
4922 strstart = "regard ", strend = " as userinstalled";
4924 case SOLVER_ALLOWUNINSTALL:
4925 strstart = "allow deinstallation of ";
4928 strstart = "favor ";
4930 case SOLVER_DISFAVOR:
4931 strstart = "disfavor ";
4933 case SOLVER_BLACKLIST:
4934 strstart = "blacklist ";
4937 strstart = "unknown job ";
4940 s = pool_tmpjoin(pool, strstart, solver_select2str(pool, select, what), strend);
4942 if ((how & ~(SOLVER_SELECTMASK|SOLVER_JOBMASK)) == 0)
4945 s = pool_tmpappend(pool, s, " ", 0);
4946 if (how & SOLVER_WEAK)
4947 s = pool_tmpappend(pool, s, ",weak", 0);
4948 if (how & SOLVER_ESSENTIAL)
4949 s = pool_tmpappend(pool, s, ",essential", 0);
4950 if (how & SOLVER_CLEANDEPS)
4951 s = pool_tmpappend(pool, s, ",cleandeps", 0);
4952 if (how & SOLVER_ORUPDATE)
4953 s = pool_tmpappend(pool, s, ",orupdate", 0);
4954 if (how & SOLVER_FORCEBEST)
4955 s = pool_tmpappend(pool, s, ",forcebest", 0);
4956 if (how & SOLVER_TARGETED)
4957 s = pool_tmpappend(pool, s, ",targeted", 0);
4958 if (how & SOLVER_SETEV)
4959 s = pool_tmpappend(pool, s, ",setev", 0);
4960 if (how & SOLVER_SETEVR)
4961 s = pool_tmpappend(pool, s, ",setevr", 0);
4962 if (how & SOLVER_SETARCH)
4963 s = pool_tmpappend(pool, s, ",setarch", 0);
4964 if (how & SOLVER_SETVENDOR)
4965 s = pool_tmpappend(pool, s, ",setvendor", 0);
4966 if (how & SOLVER_SETREPO)
4967 s = pool_tmpappend(pool, s, ",setrepo", 0);
4968 if (how & SOLVER_SETNAME)
4969 s = pool_tmpappend(pool, s, ",setname", 0);
4970 if (how & SOLVER_NOAUTOSET)
4971 s = pool_tmpappend(pool, s, ",noautoset", 0);
4972 if (s[o + 1] != ',')
4973 s = pool_tmpappend(pool, s, ",?", 0);
4975 return pool_tmpappend(pool, s, "]", 0);
4979 solver_alternative2str(Solver *solv, int type, Id id, Id from)
4981 Pool *pool = solv->pool;
4982 if (type == SOLVER_ALTERNATIVE_TYPE_RECOMMENDS)
4984 const char *s = pool_dep2str(pool, id);
4985 return pool_tmpappend(pool, s, ", recommended by ", pool_solvid2str(pool, from));
4987 if (type == SOLVER_ALTERNATIVE_TYPE_RULE)
4990 Id depfrom, depto, dep;
4992 if (solver_ruleclass(solv, id) == SOLVER_RULE_CHOICE)
4993 id = solver_rule2pkgrule(solv, id);
4994 if (solver_ruleclass(solv, id) == SOLVER_RULE_RECOMMENDS)
4995 id = solver_rule2pkgrule(solv, id);
4996 rtype = solver_ruleinfo(solv, id, &depfrom, &depto, &dep);
4997 if ((rtype & SOLVER_RULE_TYPEMASK) == SOLVER_RULE_JOB)
4999 if ((depto & SOLVER_SELECTMASK) == SOLVER_SOLVABLE_PROVIDES)
5000 return pool_dep2str(pool, dep);
5001 return solver_select2str(pool, depto & SOLVER_SELECTMASK, dep);
5003 if (rtype == SOLVER_RULE_PKG_REQUIRES)
5005 const char *s = pool_dep2str(pool, dep);
5006 return pool_tmpappend(pool, s, ", required by ", pool_solvid2str(pool, depfrom));
5008 sprintf(buf, "Rule #%d", id);
5009 return pool_tmpjoin(pool, buf, 0, 0);
5011 return "unknown alternative type";