Imported Upstream version 0.6.8
[platform/upstream/libsolv.git] / src / rules.c
index 2be3027..048cd99 100644 (file)
 
 #define RULES_BLOCK 63
 
-static void addrpmruleinfo(Solver *solv, Id p, Id d, int type, Id dep);
+static void addpkgruleinfo(Solver *solv, Id p, Id d, int type, Id dep);
 static void solver_createcleandepsmap(Solver *solv, Map *cleandepsmap, int unneeded);
 
 /*-------------------------------------------------------------------
  * Check if dependency is possible
  *
  * mirrors solver_dep_fulfilled but uses map m instead of the decisionmap.
- * used in solver_addrpmrulesforweak and solver_createcleandepsmap.
+ * used in solver_addpkgrulesforweak and solver_createcleandepsmap.
  */
 
 static inline int
@@ -243,7 +243,7 @@ hashrule(Solver *solv, Id p, Id d, int n)
 
 /*
  * add rule
- *  p = direct literal; always < 0 for installed rpm rules
+ *  p = direct literal; always < 0 for installed pkg rules
  *  d, if < 0 direct literal, if > 0 offset into whatprovides, if == 0 rule is assertion (look at p only)
  *
  *
@@ -261,20 +261,19 @@ hashrule(Solver *solv, Id p, Id d, int n)
  *   Install:    p > 0, d = 0   (A)             user requested install
  *   Remove:     p < 0, d = 0   (-A)            user requested remove (also: uninstallable)
  *   Requires:   p < 0, d > 0   (-A|B1|B2|...)  d: <list of providers for requirement of p>
+ *   Requires:   p > 0, d < 0   (B|-A)         hack to save a whatprovides allocation, gets converted into (-A|B)
  *   Updates:    p > 0, d > 0   (A|B1|B2|...)   d: <list of updates for solvable p>
  *   Conflicts:  p < 0, d < 0   (-A|-B)         either p (conflict issuer) or d (conflict provider) (binary rule)
  *                                              also used for obsoletes
- *   ?:          p > 0, d < 0   (A|-B)
- *   No-op ?:    p = 0, d = 0   (null)          (used as policy rule placeholder)
+ *   No-op ?:    p = 0, d = 0   (null)          (used as placeholder in update/feature rules)
  *
  *   resulting watches:
  *   ------------------
  *   Direct assertion (no watch needed) --> d = 0, w1 = p, w2 = 0
  *   Binary rule: p = first literal, d = 0, w2 = second literal, w1 = p
  *   every other : w1 = p, w2 = whatprovidesdata[d];
- *   Disabled rule: w1 = 0
  *
- *   always returns a rule for non-rpm rules
+ *   always returns a rule for non-pkg rules
  */
 
 Rule *
@@ -287,83 +286,76 @@ solver_addrule(Solver *solv, Id p, Id d)
   int n = 0;                          /* number of literals in rule - 1
                                          0 = direct assertion (single literal)
                                          1 = binary rule
-                                         >1 =
+                                         >1 = multi-literal rule
                                        */
 
-  /* it often happenes that requires lead to adding the same rpm rule
+  /* it often happenes that requires lead to adding the same pkg rule
    * multiple times, so we prune those duplicates right away to make
    * the work for unifyrules a bit easier */
 
-  if (!solv->rpmrules_end)             /* we add rpm rules */
+  if (!solv->pkgrules_end)             /* we add pkg rules */
     {
       r = solv->rules + solv->nrules - 1;      /* get the last added rule */
       if (r->p == p && r->d == d && (d != 0 || !r->w2))
        return r;
     }
 
-    /*
-     * compute number of literals (n) in rule
-     */
-
+  /* compute number of literals (n) in rule */
   if (d < 0)
     {
-      /* always a binary rule */
+      if (p == -d)
+       return 0;                       /* rule is self-fulfilling */
       if (p == d)
-       return 0;                      /* ignore self conflict */
-      n = 1;
+       d = 0;                          /* normalize to assertion */
+      else
+        n = 1;                         /* binary rule */
     }
   else if (d > 0)
     {
       for (dp = pool->whatprovidesdata + d; *dp; dp++, n++)
        if (*dp == -p)
          return 0;                     /* rule is self-fulfilling */
-       
       if (n == 1)                      /* convert to binary rule */
        d = dp[-1];
     }
 
-  if (n == 1 && p > d && !solv->rpmrules_end)
+  if (n == 1 && p > d && !solv->pkgrules_end)
     {
-      /* smallest literal first so we can find dups */
+      /* put smallest literal first so we can find dups */
       n = p; p = d; d = n;             /* p <-> d */
       n = 1;                          /* re-set n, was used as temp var */
     }
 
   /*
-   * check for duplicate
+   * check for duplicate (r is only set if we're adding pkg rules)
    */
-
-  /* check if the last added rule (r) is exactly the same as what we're looking for. */
-  if (r && n == 1 && !r->d && r->p == p && r->w2 == d)
-    return r;  /* binary rule */
-
-    /* have n-ary rule with same first literal, check other literals */
-  if (r && n > 1 && r->d && r->p == p)
+  if (r)
     {
-      /* Rule where d is an offset in whatprovidesdata */
-      Id *dp2;
-      if (d == r->d)
-       return r;
-      dp2 = pool->whatprovidesdata + r->d;
-      for (dp = pool->whatprovidesdata + d; *dp; dp++, dp2++)
-       if (*dp != *dp2)
-         break;
-      if (*dp == *dp2)
+      /* check if the last added rule (r) is exactly the same as what we're looking for. */
+      if (n == 1 && !r->d && r->p == p && r->w2 == d)
        return r;
-   }
+      /* have n-ary rule with same first literal, check other literals */
+      if (n > 1 && r->d && r->p == p)
+       {
+         /* Rule where d is an offset in whatprovidesdata */
+         Id *dp2;
+         if (d == r->d)
+           return r;
+         dp2 = pool->whatprovidesdata + r->d;
+         for (dp = pool->whatprovidesdata + d; *dp; dp++, dp2++)
+           if (*dp != *dp2)
+             break;
+         if (*dp == *dp2)
+           return r;
+       }
+    }
 
   /*
-   * allocate new rule
+   * allocate new rule r
    */
-
-  /* extend rule buffer */
   solv->rules = solv_extend(solv->rules, solv->nrules, 1, sizeof(Rule), RULES_BLOCK);
   r = solv->rules + solv->nrules++;    /* point to rule space */
 
-    /*
-     * r = new rule
-     */
-
   r->p = p;
   if (n == 0)
     {
@@ -406,7 +398,7 @@ solver_shrinkrules(Solver *solv, int nrules)
 
 /******************************************************************************
  ***
- *** rpm rule part: create rules representing the package dependencies
+ *** pkg rule part: create rules representing the package dependencies
  ***
  ***/
 
@@ -442,17 +434,20 @@ makemultiversionconflict(Solver *solv, Id n, Id con)
       queue_push(&q, p);
     }
   if (q.count == 1)
-    return -n; /* no other package found, generate normal conflict */
-  return pool_queuetowhatprovides(pool, &q);
+    n = -n;    /* no other package found, generate normal conflict */
+  else
+    n = pool_queuetowhatprovides(pool, &q);
+  queue_free(&q);
+  return n;
 }
 
 static inline void
-addrpmrule(Solver *solv, Id p, Id d, int type, Id dep)
+addpkgrule(Solver *solv, Id p, Id d, int type, Id dep)
 {
   if (!solv->ruleinfoq)
     solver_addrule(solv, p, d);
   else
-    addrpmruleinfo(solv, p, d, type, dep);
+    addpkgruleinfo(solv, p, d, type, dep);
 }
 
 #ifdef ENABLE_LINKED_PKGS
@@ -474,22 +469,22 @@ addlinks(Solver *solv, Solvable *s, Id req, Queue *qr, Id prv, Queue *qp, Map *m
 #endif
 
   if (qr->count == 1)
-    addrpmrule(solv, qr->elements[0], -(s - pool->solvables), SOLVER_RULE_RPM_PACKAGE_REQUIRES, req);
+    addpkgrule(solv, qr->elements[0], -(s - pool->solvables), SOLVER_RULE_PKG_REQUIRES, req);
   else
-    addrpmrule(solv, -(s - pool->solvables), pool_queuetowhatprovides(pool, qr), SOLVER_RULE_RPM_PACKAGE_REQUIRES, req);
+    addpkgrule(solv, -(s - pool->solvables), pool_queuetowhatprovides(pool, qr), SOLVER_RULE_PKG_REQUIRES, req);
   if (qp->count > 1)
     {
       Id d = pool_queuetowhatprovides(pool, qp);
       for (i = 0; i < qr->count; i++)
-       addrpmrule(solv, -qr->elements[i], d, SOLVER_RULE_RPM_PACKAGE_REQUIRES, prv);
+       addpkgrule(solv, -qr->elements[i], d, SOLVER_RULE_PKG_REQUIRES, prv);
     }
   else if (qp->count)
     {
       for (i = 0; i < qr->count; i++)
-       addrpmrule(solv, qp->elements[0], -qr->elements[i], SOLVER_RULE_RPM_PACKAGE_REQUIRES, prv);
+       addpkgrule(solv, qp->elements[0], -qr->elements[i], SOLVER_RULE_PKG_REQUIRES, prv);
     }
   if (!m)
-    return;    /* nothing more to do if called from getrpmruleinfos() */
+    return;    /* nothing more to do if called from getpkgruleinfos() */
   for (i = 0; i < qr->count; i++)
     if (!MAPTST(m, qr->elements[i]))
       queue_push(workq, qr->elements[i]);
@@ -504,9 +499,9 @@ addlinks(Solver *solv, Solvable *s, Id req, Queue *qr, Id prv, Queue *qp, Map *m
         solv->instbuddy = solv_calloc(installed->end - installed->start, sizeof(Id));
       if (qr->count == 1)
         solv->instbuddy[s - pool->solvables - installed->start] = qr->elements[0];
-      for (i = 0; i < qp->count; i++)
+      for (i = 0; i < qr->count; i++)
        {
-         Id p = qp->elements[i];
+         Id p = qr->elements[i];
          if (pool->solvables[p].repo != installed)
            continue;   /* huh? */
          if (qp->count > 1 || (solv->instbuddy[p - installed->start] != 0 && solv->instbuddy[p - installed->start] != s - pool->solvables))
@@ -546,7 +541,7 @@ add_complex_deprules(Solver *solv, Id p, Id dep, int type, int dontfix, Queue *w
   queue_init(&bq);
 
   /* CNF expansion for requires, DNF + INVERT expansion for conflicts */
-  i = pool_normalize_complex_dep(pool, dep, &bq, type == SOLVER_RULE_RPM_PACKAGE_REQUIRES ? 0 : (CPLXDEPS_TODNF | CPLXDEPS_EXPAND | CPLXDEPS_INVERT));
+  i = pool_normalize_complex_dep(pool, dep, &bq, type == SOLVER_RULE_DEP_PACKAGE_REQUIRES ? 0 : (CPLXDEPS_TODNF | CPLXDEPS_EXPAND | CPLXDEPS_INVERT));
   /* handle special cases */
   if (i == 0)
     {
@@ -557,7 +552,7 @@ add_complex_deprules(Solver *solv, Id p, Id dep, int type, int dontfix, Queue *w
       else
        {
          POOL_DEBUG(SOLV_DEBUG_RULE_CREATION, "package %s [%d] is not installable (%s)\n", pool_solvid2str(pool, p), p, pool_dep2str(pool, dep));
-         addrpmrule(solv, -p, 0, type == SOLVER_RULE_RPM_PACKAGE_REQUIRES ? SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP : type, dep);
+         addpkgrule(solv, -p, 0, type == SOLVER_RULE_PKG_REQUIRES ? SOLVER_RULE_PKG_NOTHING_PROVIDES_DEP : type, dep);
        }
       queue_free(&bq);
       return;
@@ -593,10 +588,10 @@ add_complex_deprules(Solver *solv, Id p, Id dep, int type, int dontfix, Queue *w
            {
              /* nothing provides req! */
              POOL_DEBUG(SOLV_DEBUG_RULE_CREATION, "package %s [%d] is not installable (%s)\n", pool_solvid2str(pool, p), p, pool_dep2str(pool, dep));
-             addrpmrule(solv, -p, 0, SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP, dep);
+             addpkgrule(solv, -p, 0, SOLVER_RULE_PKG_NOTHING_PROVIDES_DEP, dep);
              continue;
            }
-         addrpmrule(solv, -p, dp - pool->whatprovidesdata, SOLVER_RULE_RPM_PACKAGE_REQUIRES, dep);
+         addpkgrule(solv, -p, dp - pool->whatprovidesdata, SOLVER_RULE_PKG_REQUIRES, dep);
          /* push all non-visited providers on the work queue */
          if (m)
            for (; *dp; dp++)
@@ -616,19 +611,19 @@ add_complex_deprules(Solver *solv, Id p, Id dep, int type, int dontfix, Queue *w
            continue;
          if (-p == p2)
            {
-             if (type == SOLVER_RULE_RPM_PACKAGE_CONFLICT)
+             if (type == SOLVER_RULE_PKG_CONFLICTS)
                {
                  if (pool->forbidselfconflicts && !is_otherproviders_dep(pool, dep))
-                   addrpmrule(solv, -p, 0, SOLVER_RULE_RPM_SELF_CONFLICT, dep);
+                   addpkgrule(solv, -p, 0, SOLVER_RULE_PKG_SELF_CONFLICT, dep);
                  continue;
                }
-             addrpmrule(solv, -p, 0, type, dep);
+             addpkgrule(solv, -p, 0, type, dep);
              continue;
            }
          if (p2 > 0)
-           addrpmrule(solv, p2, -p, type, dep);        /* hack so that we don't need pool_queuetowhatprovides */
+           addpkgrule(solv, p2, -p, type, dep);        /* hack so that we don't need pool_queuetowhatprovides */
          else
-           addrpmrule(solv, -p, p2, type, dep);
+           addpkgrule(solv, -p, p2, type, dep);
          if (m && p2 > 0 && !MAPTST(m, p2))
            queue_push(workq, p2);
        }
@@ -679,7 +674,7 @@ add_complex_deprules(Solver *solv, Id p, Id dep, int type, int dontfix, Queue *w
              memset(&q, 0, sizeof(q));
              q.count = qcnt - 1;
              q.elements = qele + 1;
-             addrpmrule(solv, qele[0], pool_queuetowhatprovides(pool, &q), type, dep);
+             addpkgrule(solv, qele[0], pool_queuetowhatprovides(pool, &q), type, dep);
              if (m)
                for (j = 0; j < qcnt; j++)
                  if (qele[j] > 0 && !MAPTST(m, qele[j]))
@@ -713,7 +708,7 @@ add_complex_deprules(Solver *solv, Id p, Id dep, int type, int dontfix, Queue *w
  */
 
 void
-solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
+solver_addpkgrulesforsolvable(Solver *solv, Solvable *s, Map *m)
 {
   Pool *pool = solv->pool;
   Repo *installed = solv->installed;
@@ -756,10 +751,10 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
       dontfix = 0;
       if (installed                    /* Installed system available */
          && s->repo == installed       /* solvable is installed */
-         && !solv->fixmap_all          /* NOT repair errors in rpm dependency graph */
+         && !solv->fixmap_all          /* NOT repair errors in dependency graph */
          && !(solv->fixmap.size && MAPTST(&solv->fixmap, n - installed->start)))
         {
-         dontfix = 1;                  /* dont care about broken rpm deps */
+         dontfix = 1;                  /* dont care about broken deps */
         }
 
       if (!dontfix)
@@ -769,7 +764,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
                : !pool_installable(pool, s))
            {
              POOL_DEBUG(SOLV_DEBUG_RULE_CREATION, "package %s [%d] is not installable\n", pool_solvid2str(pool, n), n);
-             addrpmrule(solv, -n, 0, SOLVER_RULE_RPM_NOT_INSTALLABLE, 0);
+             addpkgrule(solv, -n, 0, SOLVER_RULE_PKG_NOT_INSTALLABLE, 0);
            }
        }
 
@@ -795,7 +790,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
              if (pool_is_complex_dep(pool, req))
                {
                  /* we have AND/COND deps, normalize */
-                 add_complex_deprules(solv, n, req, SOLVER_RULE_RPM_PACKAGE_REQUIRES, dontfix, &workq, m);
+                 add_complex_deprules(solv, n, req, SOLVER_RULE_PKG_REQUIRES, dontfix, &workq, m);
                  continue;
                }
 #endif
@@ -826,7 +821,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
              if (!*dp)
                {
                  POOL_DEBUG(SOLV_DEBUG_RULE_CREATION, "package %s [%d] is not installable (%s)\n", pool_solvid2str(pool, n), n, pool_dep2str(pool, req));
-                 addrpmrule(solv, -n, 0, SOLVER_RULE_RPM_NOTHING_PROVIDES_DEP, req);
+                 addpkgrule(solv, -n, 0, SOLVER_RULE_PKG_NOTHING_PROVIDES_DEP, req);
                  continue;
                }
 
@@ -839,7 +834,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
 
              /* add 'requires' dependency */
               /* rule: (-requestor|provider1|provider2|...|providerN) */
-             addrpmrule(solv, -n, dp - pool->whatprovidesdata, SOLVER_RULE_RPM_PACKAGE_REQUIRES, req);
+             addpkgrule(solv, -n, dp - pool->whatprovidesdata, SOLVER_RULE_PKG_REQUIRES, req);
 
              /* push all non-visited providers on the work queue */
              if (m)
@@ -877,7 +872,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
              if (!ispatch && pool_is_complex_dep(pool, con))
                {
                  /* we have AND/COND deps, normalize */
-                 add_complex_deprules(solv, n, con, SOLVER_RULE_RPM_PACKAGE_CONFLICT, dontfix, &workq, m);
+                 add_complex_deprules(solv, n, con, SOLVER_RULE_PKG_CONFLICTS, dontfix, &workq, m);
                  continue;
                }
 #endif
@@ -893,7 +888,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
                    {
                      if (!pool->forbidselfconflicts || is_otherproviders_dep(pool, con))
                        continue;
-                     addrpmrule(solv, -n, 0, SOLVER_RULE_RPM_SELF_CONFLICT, con);
+                     addpkgrule(solv, -n, 0, SOLVER_RULE_PKG_SELF_CONFLICT, con);
                      continue;
                    }
                  if (ispatch && solv->multiversion.size && MAPTST(&solv->multiversion, p) && ISRELDEP(con))
@@ -902,7 +897,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
                      p = -makemultiversionconflict(solv, p, con);
                    }
                   /* rule: -n|-p: either solvable _or_ provider of conflict */
-                 addrpmrule(solv, -n, -p, SOLVER_RULE_RPM_PACKAGE_CONFLICT, con);
+                 addpkgrule(solv, -n, p == SYSTEMSOLVABLE ? 0 : -p, SOLVER_RULE_PKG_CONFLICTS, con);
                }
            }
        }
@@ -936,9 +931,9 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
                      if (pool->obsoleteusescolors && !pool_colormatch(pool, s, ps))
                        continue;
                      if (!isinstalled)
-                       addrpmrule(solv, -n, -p, SOLVER_RULE_RPM_PACKAGE_OBSOLETES, obs);
+                       addpkgrule(solv, -n, -p, SOLVER_RULE_PKG_OBSOLETES, obs);
                      else
-                       addrpmrule(solv, -n, -p, SOLVER_RULE_RPM_INSTALLEDPKG_OBSOLETES, obs);
+                       addpkgrule(solv, -n, -p, SOLVER_RULE_PKG_INSTALLED_OBSOLETES, obs);
                    }
                }
            }
@@ -965,9 +960,9 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
                  if (pool->implicitobsoleteusescolors && !pool_colormatch(pool, s, ps))
                    continue;
                  if (s->name == ps->name)
-                   addrpmrule(solv, -n, -p, SOLVER_RULE_RPM_SAME_NAME, 0);
+                   addpkgrule(solv, -n, -p, SOLVER_RULE_PKG_SAME_NAME, 0);
                  else
-                   addrpmrule(solv, -n, -p, SOLVER_RULE_RPM_IMPLICIT_OBSOLETES, s->name);
+                   addpkgrule(solv, -n, -p, SOLVER_RULE_PKG_IMPLICIT_OBSOLETES, s->name);
                }
            }
        }
@@ -1016,7 +1011,7 @@ solver_addrpmrulesforsolvable(Solver *solv, Solvable *s, Map *m)
 
 #ifdef ENABLE_LINKED_PKGS
 void
-solver_addrpmrulesforlinked(Solver *solv, Map *m)
+solver_addpkgrulesforlinked(Solver *solv, Map *m)
 {
   Pool *pool = solv->pool;
   Solvable *s;
@@ -1041,7 +1036,7 @@ solver_addrpmrulesforlinked(Solver *solv, Map *m)
          for (j = 0; j < qr.count; j++)
            if (MAPTST(m, qr.elements[j]))
              {
-               solver_addrpmrulesforsolvable(solv, s, m);
+               solver_addpkgrulesforsolvable(solv, s, m);
                break;
              }
          queue_empty(&qr);
@@ -1059,7 +1054,7 @@ solver_addrpmrulesforlinked(Solver *solv, Map *m)
  */
 
 void
-solver_addrpmrulesforweak(Solver *solv, Map *m)
+solver_addpkgrulesforweak(Solver *solv, Map *m)
 {
   Pool *pool = solv->pool;
   Solvable *s;
@@ -1101,7 +1096,7 @@ solver_addrpmrulesforweak(Solver *solv, Map *m)
       /* if nothing found, goto next solvables */
       if (!sup)
        continue;
-      solver_addrpmrulesforsolvable(solv, s, m);
+      solver_addpkgrulesforsolvable(solv, s, m);
       n = 0;                   /* check all solvables again because we added solvables to m */
     }
 }
@@ -1117,7 +1112,7 @@ solver_addrpmrulesforweak(Solver *solv, Map *m)
  */
 
 void
-solver_addrpmrulesforupdaters(Solver *solv, Solvable *s, Map *m, int allow_all)
+solver_addpkgrulesforupdaters(Solver *solv, Solvable *s, Map *m, int allow_all)
 {
   Pool *pool = solv->pool;
   int i;
@@ -1130,11 +1125,11 @@ solver_addrpmrulesforupdaters(Solver *solv, Solvable *s, Map *m, int allow_all)
   policy_findupdatepackages(solv, s, &qs, allow_all);
     /* add rule for 's' if not already done */
   if (!MAPTST(m, s - pool->solvables))
-    solver_addrpmrulesforsolvable(solv, s, m);
+    solver_addpkgrulesforsolvable(solv, s, m);
     /* foreach update candidate, add rule if not already done */
   for (i = 0; i < qs.count; i++)
     if (!MAPTST(m, qs.elements[i]))
-      solver_addrpmrulesforsolvable(solv, pool->solvables + qs.elements[i], m);
+      solver_addpkgrulesforsolvable(solv, pool->solvables + qs.elements[i], m);
   queue_free(&qs);
 }
 
@@ -1225,9 +1220,11 @@ solver_addupdaterule(Solver *solv, Solvable *s, int allow_all)
   if (solv->dupmap_all)
     p = finddistupgradepackages(solv, s, &qs, allow_all);
   else
-    policy_findupdatepackages(solv, s, &qs, allow_all);
-  if (!allow_all && !solv->dupmap_all && solv->dupinvolvedmap.size && MAPTST(&solv->dupinvolvedmap, p))
-    addduppackages(solv, s, &qs);
+    {
+      policy_findupdatepackages(solv, s, &qs, allow_all);
+      if (!allow_all && solv->dupinvolvedmap.size && MAPTST(&solv->dupinvolvedmap, p))
+        addduppackages(solv, s, &qs);
+    }
 
 #ifdef ENABLE_LINKED_PKGS
   if (solv->instbuddy && solv->instbuddy[s - pool->solvables - solv->installed->start])
@@ -1252,52 +1249,65 @@ solver_addupdaterule(Solver *solv, Solvable *s, int allow_all)
     }
 #endif
 
+  if (!allow_all && !p && solv->dupmap_all)
+    {
+      queue_push(&solv->orphaned, s - pool->solvables);                /* an orphaned package */
+      if (solv->keep_orphans && !(solv->droporphanedmap_all || (solv->droporphanedmap.size && MAPTST(&solv->droporphanedmap, s - pool->solvables - solv->installed->start))))
+       p = s - pool->solvables;        /* keep this orphaned package installed */
+    }
+
   if (!allow_all && qs.count && solv->multiversion.size)
     {
       int i, j;
 
-      d = pool_queuetowhatprovides(pool, &qs);
-      /* filter out all multiversion packages as they don't update */
-      for (i = j = 0; i < qs.count; i++)
+      for (i = 0; i < qs.count; i++)
+       if (MAPTST(&solv->multiversion, qs.elements[i]))
+         break;
+      if (i < qs.count)
        {
-         if (MAPTST(&solv->multiversion, qs.elements[i]))
-           {
-             Solvable *ps = pool->solvables + qs.elements[i];
-             /* if keepexplicitobsoletes is set and the name is different,
-              * we assume that there is an obsoletes. XXX: not 100% correct */
-             if (solv->keepexplicitobsoletes && ps->name != s->name)
+         /* filter out all multiversion packages as they don't update */
+         d = pool_queuetowhatprovides(pool, &qs);
+         for (j = i; i < qs.count; i++)
+            {
+             if (MAPTST(&solv->multiversion, qs.elements[i]))
                {
-                 qs.elements[j++] = qs.elements[i];
-                 continue;
+                 Solvable *ps = pool->solvables + qs.elements[i];
+                 /* if keepexplicitobsoletes is set and the name is different,
+                  * we assume that there is an obsoletes. XXX: not 100% correct */
+                 if (solv->keepexplicitobsoletes && ps->name != s->name)
+                   {
+                     qs.elements[j++] = qs.elements[i];
+                     continue;
+                   }
+                 /* it's ok if they have same nevra */
+                 if (ps->name != s->name || ps->evr != s->evr || ps->arch != s->arch)
+                   continue;
                }
-             /* it's ok if they have same nevra */
-             if (ps->name != s->name || ps->evr != s->evr || ps->arch != s->arch)
-               continue;
+             qs.elements[j++] = qs.elements[i];
            }
-         qs.elements[j++] = qs.elements[i];
-       }
-      if (j < qs.count)
-       {
-         if (d && solv->installed && s->repo == solv->installed &&
-              (solv->updatemap_all || (solv->updatemap.size && MAPTST(&solv->updatemap, s - pool->solvables - solv->installed->start))))
+         if (j < qs.count)
            {
-             if (!solv->specialupdaters)
-               solv->specialupdaters = solv_calloc(solv->installed->end - solv->installed->start, sizeof(Id));
-             solv->specialupdaters[s - pool->solvables - solv->installed->start] = d;
+             if (d && solv->installed && s->repo == solv->installed &&
+                 (solv->updatemap_all || (solv->updatemap.size && MAPTST(&solv->updatemap, s - pool->solvables - solv->installed->start))))
+               {
+                 if (!solv->specialupdaters)
+                   solv->specialupdaters = solv_calloc(solv->installed->end - solv->installed->start, sizeof(Id));
+                 solv->specialupdaters[s - pool->solvables - solv->installed->start] = d;
+               }
+             if (j == 0 && p == -SYSTEMSOLVABLE && solv->dupmap_all)
+               {
+                 queue_push(&solv->orphaned, s - pool->solvables);     /* also treat as orphaned */
+                 j = qs.count;
+               }
+             qs.count = j;
            }
-         if (j == 0 && p == -SYSTEMSOLVABLE && solv->dupmap_all)
+         else if (p != -SYSTEMSOLVABLE)
            {
-             queue_push(&solv->orphaned, s - pool->solvables); /* treat as orphaned */
-             j = qs.count;
+             /* could fallthrough, but then we would do pool_queuetowhatprovides twice */
+             queue_free(&qs);
+             solver_addrule(solv, p, d);       /* allow update of s */
+             return;
            }
-         qs.count = j;
-       }
-      else if (p != -SYSTEMSOLVABLE)
-       {
-         /* could fallthrough, but then we would do pool_queuetowhatprovides twice */
-         queue_free(&qs);
-         solver_addrule(solv, p, d);   /* allow update of s */
-         return;
        }
     }
   if (qs.count && p == -SYSTEMSOLVABLE)
@@ -2364,7 +2374,7 @@ solver_reenablepolicyrules_cleandeps(Solver *solv, Id pkg)
  ***/
 
 static void
-addrpmruleinfo(Solver *solv, Id p, Id d, int type, Id dep)
+addpkgruleinfo(Solver *solv, Id p, Id d, int type, Id dep)
 {
   Pool *pool = solv->pool;
   Rule *r;
@@ -2426,10 +2436,13 @@ addrpmruleinfo(Solver *solv, Id p, Id d, int type, Id dep)
          if (p != op || w2 != ow2)
            return;
        }
+      /* should use a different type instead */
+      if (type == SOLVER_RULE_PKG_CONFLICTS && !w2)
+       w2 = -SYSTEMSOLVABLE;
     }
   /* yep, rule matches. record info */
   queue_push(solv->ruleinfoq, type);
-  if (type == SOLVER_RULE_RPM_SAME_NAME)
+  if (type == SOLVER_RULE_PKG_SAME_NAME)
     {
       /* we normalize same name order */
       queue_push(solv->ruleinfoq, op < 0 ? -op : 0);
@@ -2465,7 +2478,7 @@ solver_allruleinfos_cmp(const void *ap, const void *bp, void *dp)
 }
 
 static void
-getrpmruleinfos(Solver *solv, Rule *r, Queue *rq)
+getpkgruleinfos(Solver *solv, Rule *r, Queue *rq)
 {
   Pool *pool = solv->pool;
   Id l, pp;
@@ -2477,13 +2490,17 @@ getrpmruleinfos(Solver *solv, Rule *r, Queue *rq)
     {
       if (l >= 0)
        break;
-      solver_addrpmrulesforsolvable(solv, pool->solvables - l, 0);
+      solver_addpkgrulesforsolvable(solv, pool->solvables - l, 0);
     }
 #ifdef ENABLE_LINKED_PKGS
   FOR_RULELITERALS(l, pp, r)
     {
-      if (l < 0 || l != r->p)
-       break;
+      if (l < 0)
+       {
+         if (l == r->p)
+           continue;
+         break;
+       }
       if (!strchr(pool_id2str(pool, pool->solvables[l].name), ':') || !has_package_link(pool, pool->solvables + l))
        break;
       add_package_link(solv, pool->solvables + l, 0, 0);
@@ -2500,7 +2517,7 @@ solver_allruleinfos(Solver *solv, Id rid, Queue *rq)
   int i, j;
 
   queue_empty(rq);
-  if (rid <= 0 || rid >= solv->rpmrules_end)
+  if (rid <= 0 || rid >= solv->pkgrules_end)
     {
       Id type, from, to, dep;
       type = solver_ruleinfo(solv, rid, &from, &to, &dep);
@@ -2510,7 +2527,7 @@ solver_allruleinfos(Solver *solv, Id rid, Queue *rq)
       queue_push(rq, dep);
       return 1;
     }
-  getrpmruleinfos(solv, r, rq);
+  getpkgruleinfos(solv, r, rq);
   /* now sort & unify em */
   if (!rq->count)
     return 0;
@@ -2548,18 +2565,18 @@ solver_ruleinfo(Solver *solv, Id rid, Id *fromp, Id *top, Id *depp)
     *top = 0;
   if (depp)
     *depp = 0;
-  if (rid > 0 && rid < solv->rpmrules_end)
+  if (rid > 0 && rid < solv->pkgrules_end)
     {
       Queue rq;
       int i;
 
       if (r->p >= 0)
-       return SOLVER_RULE_RPM;
+       return SOLVER_RULE_PKG;
       if (fromp)
        *fromp = -r->p;
       queue_init(&rq);
-      getrpmruleinfos(solv, r, &rq);
-      type = SOLVER_RULE_RPM;
+      getpkgruleinfos(solv, r, &rq);
+      type = SOLVER_RULE_PKG;
       for (i = 0; i < rq.count; i += 4)
        {
          Id qt, qo, qp, qd;
@@ -2567,7 +2584,7 @@ solver_ruleinfo(Solver *solv, Id rid, Id *fromp, Id *top, Id *depp)
          qp = rq.elements[i + 1];
          qo = rq.elements[i + 2];
          qd = rq.elements[i + 3];
-         if (type == SOLVER_RULE_RPM || type > qt)
+         if (type == SOLVER_RULE_PKG || type > qt)
            {
              type = qt;
              if (fromp)
@@ -2635,8 +2652,26 @@ solver_ruleinfo(Solver *solv, Id rid, Id *fromp, Id *top, Id *depp)
     }
   if (rid >= solv->bestrules && rid < solv->bestrules_end)
     {
+      if (fromp && solv->bestrules_pkg[rid - solv->bestrules] > 0)
+       *fromp = solv->bestrules_pkg[rid - solv->bestrules];
       return SOLVER_RULE_BEST;
     }
+  if (rid >= solv->yumobsrules && rid < solv->yumobsrules_end)
+    {
+      if (fromp)
+       *fromp = -r->p;
+      if (top)
+       {
+         /* first solvable is enough, we just need it for the name */
+         if (!r->d || r->d == -1)
+           *top = r->w2;
+         else
+           *top = pool->whatprovidesdata[r->d < 0 ? -r->d : r->d];
+       }
+      if (depp)
+       *depp = solv->yumobsrules_info[rid - solv->yumobsrules];
+      return SOLVER_RULE_YUMOBS;
+    }
   if (rid >= solv->choicerules && rid < solv->choicerules_end)
     {
       return SOLVER_RULE_CHOICE;
@@ -2653,8 +2688,8 @@ solver_ruleclass(Solver *solv, Id rid)
 {
   if (rid <= 0)
     return SOLVER_RULE_UNKNOWN;
-  if (rid > 0 && rid < solv->rpmrules_end)
-    return SOLVER_RULE_RPM;
+  if (rid > 0 && rid < solv->pkgrules_end)
+    return SOLVER_RULE_PKG;
   if (rid >= solv->jobrules && rid < solv->jobrules_end)
     return SOLVER_RULE_JOB;
   if (rid >= solv->updaterules && rid < solv->updaterules_end)
@@ -2667,6 +2702,8 @@ solver_ruleclass(Solver *solv, Id rid)
     return SOLVER_RULE_INFARCH;
   if (rid >= solv->bestrules && rid < solv->bestrules_end)
     return SOLVER_RULE_BEST;
+  if (rid >= solv->yumobsrules && rid < solv->yumobsrules_end)
+    return SOLVER_RULE_YUMOBS;
   if (rid >= solv->choicerules && rid < solv->choicerules_end)
     return SOLVER_RULE_CHOICE;
   if (rid >= solv->learntrules)
@@ -2835,7 +2872,7 @@ solver_addchoicerules(Solver *solv)
       return;
     }
   now = solv_timems(0);
-  solv->choicerules_ref = solv_calloc(solv->rpmrules_end, sizeof(Id));
+  solv->choicerules_ref = solv_calloc(solv->pkgrules_end, sizeof(Id));
   queue_init(&q);
   queue_init(&qi);
   map_init(&m, pool->nsolvables);
@@ -2850,10 +2887,10 @@ solver_addchoicerules(Solver *solv)
   lastaddedp = 0;
   lastaddedd = 0;
   lastaddedcnt = 0;
-  for (rid = 1; rid < solv->rpmrules_end ; rid++)
+  for (rid = 1; rid < solv->pkgrules_end ; rid++)
     {
       r = solv->rules + rid;
-      if (r->p >= 0 || ((r->d == 0 || r->d == -1) && r->w2 < 0))
+      if (r->p >= 0 || ((r->d == 0 || r->d == -1) && r->w2 <= 0))
        continue;       /* only look at requires rules */
       /* solver_printrule(solv, SOLV_DEBUG_RESULT, r); */
       queue_empty(&q);
@@ -3234,6 +3271,229 @@ solver_addbestrules(Solver *solv, int havebestinstalljobs)
   queue_free(&r2pkg);
 }
 
+
+
+
+/* yumobs rule handling */
+
+static void
+find_obsolete_group(Solver *solv, Id obs, Queue *q)
+{
+  Pool *pool = solv->pool;
+  Queue qn;
+  Id p2, pp2, op, *opp, opp2;
+  int i, j, qnc, ncnt;
+
+  queue_empty(q);
+  FOR_PROVIDES(p2, pp2, obs)
+    {
+      Solvable *s2 = pool->solvables + p2;
+      if (s2->repo != pool->installed)
+       continue;
+      if (!pool->obsoleteusesprovides && !pool_match_nevr(pool, pool->solvables + p2, obs))
+       continue;
+      /* we obsolete installed package s2 with obs. now find all other packages that have the same dep  */
+      for (opp = solv->obsoletes_data + solv->obsoletes[p2 - solv->installed->start]; (op = *opp++) != 0;)
+       {
+         Solvable *os = pool->solvables + op;
+         Id obs2, *obsp2;
+         if (!os->obsoletes)
+           continue;
+         if (pool->obsoleteusescolors && !pool_colormatch(pool, s2, os))
+           continue;
+         obsp2 = os->repo->idarraydata + os->obsoletes; 
+         while ((obs2 = *obsp2++) != 0)
+           if (obs2 == obs)
+             break;
+         if (obs2)
+           queue_pushunique(q, op);
+       }
+      /* also search packages with the same name */
+      FOR_PROVIDES(op, opp2, s2->name)
+       {
+         Solvable *os = pool->solvables + op;
+         Id obs2, *obsp2;
+         if (os->name != s2->name)
+           continue;
+         if (!os->obsoletes)
+           continue;
+         if (pool->obsoleteusescolors && !pool_colormatch(pool, s2, os))
+           continue;
+         obsp2 = os->repo->idarraydata + os->obsoletes; 
+         while ((obs2 = *obsp2++) != 0)
+           if (obs2 == obs)
+             break;
+         if (obs2)
+           queue_pushunique(q, op);
+       }
+    }
+  /* find names so that we can build groups */
+  queue_init_clone(&qn, q);
+  prune_to_best_version(solv->pool, &qn);
+#if 0
+{
+  for (i = 0; i < qn.count; i++)
+    printf(" + %s\n", pool_solvid2str(pool, qn.elements[i]));
+}
+#endif
+  /* filter into name groups */
+  qnc = qn.count;
+  if (qnc == 1)
+    {
+      queue_free(&qn);
+      queue_empty(q);
+      return;
+    }
+  ncnt = 0;
+  for (i = 0; i < qnc; i++)
+    {
+      Id n = pool->solvables[qn.elements[i]].name;
+      int got = 0;
+      for (j = 0; j < q->count; j++)
+       {
+         Id p = q->elements[j];
+         if (pool->solvables[p].name == n)
+           {
+             queue_push(&qn, p);
+             got = 1;
+           }
+       }
+      if (got)
+       {
+         queue_push(&qn, 0);
+         ncnt++;
+       }
+    }
+  if (ncnt <= 1)
+    {
+      queue_empty(q);
+    }
+  else
+    {
+      queue_empty(q);
+      queue_insertn(q, 0, qn.count - qnc, qn.elements + qnc);
+    }
+  queue_free(&qn);
+}
+
+void
+solver_addyumobsrules(Solver *solv)
+{
+  Pool *pool = solv->pool;
+  Repo *installed = solv->installed;
+  Id p, op, *opp;
+  Solvable *s;
+  Queue qo, qq, yumobsinfoq;
+  int i, j, k;
+  unsigned int now;
+
+  solv->yumobsrules = solv->nrules;
+  if (!installed || !solv->obsoletes)
+    {
+      solv->yumobsrules_end = solv->nrules;
+      return;
+    }
+  now = solv_timems(0);
+  queue_init(&qo);
+  FOR_REPO_SOLVABLES(installed, p, s)
+    {
+      if (!solv->obsoletes[p - installed->start])
+       continue;
+#if 0
+printf("checking yumobs for %s\n", pool_solvable2str(pool, s));
+#endif
+      queue_empty(&qo);
+      for (opp = solv->obsoletes_data + solv->obsoletes[p - installed->start]; (op = *opp++) != 0;)
+       {
+         Solvable *os = pool->solvables + op;
+          Id obs, *obsp = os->repo->idarraydata + os->obsoletes;
+         Id p2, pp2;
+         while ((obs = *obsp++) != 0)
+           {
+             FOR_PROVIDES(p2, pp2, obs)
+               {
+                 Solvable *s2 = pool->solvables + p2;
+                 if (s2->repo != installed)
+                   continue;
+                 if (!pool->obsoleteusesprovides && !pool_match_nevr(pool, pool->solvables + p2, obs))
+                   continue;
+                 if (pool->obsoleteusescolors && !pool_colormatch(pool, s, s2))
+                   continue;
+                 queue_pushunique(&qo, obs);
+                 break;
+               }
+           }
+       }
+    }
+  if (!qo.count)
+    {
+      queue_free(&qo);
+      return;
+    }
+  queue_init(&yumobsinfoq);
+  queue_init(&qq);
+  for (i = 0; i < qo.count; i++)
+    {
+      int group, groupk, groupstart;
+      queue_empty(&qq);
+#if 0
+printf("investigating %s\n", pool_dep2str(pool, qo.elements[i]));
+#endif
+      find_obsolete_group(solv, qo.elements[i], &qq);
+#if 0
+printf("result:\n");
+for (j = 0; j < qq.count; j++)
+  if (qq.elements[j] == 0)
+    printf("---\n");
+  else
+    printf("%s\n", pool_solvid2str(pool, qq.elements[j]));
+#endif
+  
+      if (!qq.count)
+       continue;
+      /* at least two goups, build rules */
+      group = 0;
+      for (j = 0; j < qq.count; j++)
+       {
+         p = qq.elements[j];
+         if (!p)
+           {
+             group++;
+             continue;
+           }
+         if (pool->solvables[p].repo == installed)
+           continue;
+         groupk = 0;
+         groupstart = 0;
+         for (k = 0; k < qq.count; k++)
+           {
+             Id pk = qq.elements[k];
+             if (pk)
+               continue;
+             if (group != groupk && k > groupstart)
+               {
+                 /* add the rule */
+                 Queue qhelper;
+                 memset(&qhelper, 0, sizeof(qhelper));
+                 qhelper.count = k - groupstart;
+                 qhelper.elements = qq.elements + groupstart;
+                 solver_addrule(solv, -p, pool_queuetowhatprovides(pool, &qhelper));
+                 queue_push(&yumobsinfoq, qo.elements[i]);
+               }
+             groupstart = k + 1;
+             groupk++;
+           }
+       }
+    }
+  if (yumobsinfoq.count)
+    solv->yumobsrules_info = solv_memdup2(yumobsinfoq.elements, yumobsinfoq.count, sizeof(Id));
+  queue_free(&yumobsinfoq);
+  queue_free(&qq);
+  queue_free(&qo);
+  solv->yumobsrules_end = solv->nrules;
+  POOL_DEBUG(SOLV_DEBUG_STATS, "yumobs rule creation took %d ms\n", solv_timems(now));
+}
+
 #undef CLEANDEPSDEBUG
 
 /*
@@ -3571,12 +3831,14 @@ solver_createcleandepsmap(Solver *solv, Map *cleandepsmap, int unneeded)
          if (!strncmp("product:", pool_id2str(pool, s->name), 8))
            {
              MAPSET(&userinstalled, p - installed->start);
-             if (pool->nscallback)
+#ifdef ENABLE_LINKED_PKGS
+             if (solv->instbuddy && solv->instbuddy[p - installed->start] > 1)
                {
-                 Id buddy = pool->nscallback(pool, pool->nscallbackdata, NAMESPACE_PRODUCTBUDDY, p);
-                 if (buddy >= installed->start && buddy < installed->end && pool->solvables[buddy].repo == installed)
+                 Id buddy = solv->instbuddy[p - installed->start];
+                 if (buddy >= installed->start && buddy < installed->end)
                    MAPSET(&userinstalled, buddy - installed->start);
                }
+#endif
            }
        }
     }
@@ -4313,4 +4575,96 @@ solver_get_unneeded(Solver *solv, Queue *unneededq, int filtered)
   map_free(&cleandepsmap);
 }
 
-/* EOF */
+
+void
+solver_breakorphans(Solver *solv)
+{
+  Pool *pool = solv->pool;
+  Repo *installed = solv->installed;
+  int i, rid;
+  Map m;
+
+  if (!installed || solv->droporphanedmap_all)
+    return;
+  solv->brokenorphanrules = solv_calloc(1, sizeof(Queue));
+  queue_init(solv->brokenorphanrules);
+  map_init(&m, installed->end - installed->start);
+  for (i = 0; i < solv->orphaned.count; i++)
+    {
+      Id p = solv->orphaned.elements[i];
+      if (pool->solvables[p].repo != installed)
+       continue;
+      if (solv->droporphanedmap.size && MAPTST(&solv->droporphanedmap, p - installed->start))
+       continue;
+      MAPSET(&m, p - installed->start);
+    }
+  for (rid = 1; rid < solv->pkgrules_end ; rid++)
+    {
+      Id p, *dp;
+      Rule *r = solv->rules + rid;
+      /* ignore non-deps and simple conflicts */
+      if (r->p >= 0 || ((r->d == 0 || r->d == -1) && r->w2 < 0))
+       continue;
+      p = -r->p;
+      if (p < installed->start || p >= installed->end || !MAPTST(&m, p - installed->start))
+       {
+         /* need to check other literals */
+         if (r->d == 0 || r->d == -1)
+           continue;
+         for (dp = pool->whatprovidesdata + (r->d < 0 ? -r->d - 1 : r->d); *dp < 0; dp++)
+           {
+             p = -*dp;
+             if (p >= installed->start && p < installed->end && MAPTST(&m, p - installed->start))
+               break;
+           }
+         if (*dp >= 0)
+           continue;
+       }
+      /* ok, disable this rule */
+      queue_push(solv->brokenorphanrules, rid);
+      if (r->d >= 0)
+       solver_disablerule(solv, r);
+    }
+  map_free(&m);
+  if (!solv->brokenorphanrules->count)
+    {
+      queue_free(solv->brokenorphanrules);
+      solv->brokenorphanrules = solv_free(solv->brokenorphanrules);
+    }
+}
+
+void
+solver_check_brokenorphanrules(Solver *solv, Queue *dq)
+{
+  Pool *pool = solv->pool;
+  int i;
+  Id l, pp;
+  
+  queue_empty(dq);
+  if (!solv->brokenorphanrules)
+    return;
+  for (i = 0; i < solv->brokenorphanrules->count; i++)
+    {
+      int rid = solv->brokenorphanrules->elements[i];
+      Rule *r = solv->rules + rid;
+      FOR_RULELITERALS(l, pp, r)
+       {
+         if (l < 0)
+           {
+             if (solv->decisionmap[-l] <= 0)
+               break;
+           }
+         else
+           {
+             if (solv->decisionmap[l] > 0 && pool->solvables[l].repo != solv->installed)
+               break;
+           }
+       }
+      if (l)
+       continue;
+      FOR_RULELITERALS(l, pp, r)
+        if (l > 0 && solv->decisionmap[l] == 0 && pool->solvables[l].repo != solv->installed)
+         queue_pushunique(dq, l);
+    }
+}
+