--- rpm-4.4.2.2/lib/rpmlib.h.pix	2007-09-11 08:28:15.000000000 +0200
+++ rpm-4.4.2.2/lib/rpmlib.h	2007-10-16 15:22:19.000000000 +0200
@@ -547,6 +547,7 @@ typedef	enum rpmsenseFlags_e {
     RPMSENSE_SCRIPT_POSTUN | \
     RPMSENSE_SCRIPT_VERIFY | \
     RPMSENSE_FIND_REQUIRES | \
+    RPMSENSE_MISSINGOK | \
     RPMSENSE_SCRIPT_PREP | \
     RPMSENSE_SCRIPT_BUILD | \
     RPMSENSE_SCRIPT_INSTALL | \
--- rpm-4.4.2.2/lib/depends.c.pix	2007-09-11 08:51:28.000000000 +0200
+++ rpm-4.4.2.2/lib/depends.c	2007-10-19 12:53:53.000000000 +0200
@@ -395,6 +395,16 @@ int rpmtsAddEraseElement(rpmts ts, Heade
     return removePackage(ts, h, dboffset, RPMAL_NOMATCH);
 }
 
+static int _rpmdsNotify_if(rpmds ds, const char * where, int rc, int_32 Flags)
+{
+    if (rc && Flags & RPMSENSE_MISSINGOK) {
+	rc = 0;
+	where = _("(hint skipped)");
+    }
+    rpmdsNotify(ds, where, rc);
+    return rc;
+}
+
 /**
  * Check dep for an unsatisfied dependency.
  * @param ts		transaction set
@@ -412,6 +422,7 @@ static int unsatisfiedDepend(rpmts ts, r
     DBT * data = alloca(sizeof(*data));
     rpmdbMatchIterator mi;
     const char * Name;
+    int_32 Flags;
     Header h;
     int _cacheThisRC = 1;
     int rc;
@@ -420,6 +431,7 @@ static int unsatisfiedDepend(rpmts ts, r
 
     if ((Name = rpmdsN(dep)) == NULL)
 	return 0;	/* XXX can't happen */
+    Flags = rpmdsFlags(dep);
 
     /*
      * Check if dbiOpen/dbiPut failed (e.g. permissions), we can't cache.
@@ -465,7 +477,7 @@ static int unsatisfiedDepend(rpmts ts, r
 /*@=branchstate@*/
 
 	    if (rc >= 0) {
-		rpmdsNotify(dep, _("(cached)"), rc);
+		rc = _rpmdsNotify_if(dep, _("(cached)"), rc, Flags);
 		return rc;
 	    }
 	}
@@ -492,7 +504,7 @@ retry:
 	/*@=observertrans =mayaliasunique@*/
 /*@-boundsread@*/
 	    if (xisspace(start[i]) || start[i] == '\0' || start[i] == ',') {
-		rpmdsNotify(dep, _("(rpmrc provides)"), rc);
+		rc = _rpmdsNotify_if(dep, _("(rpmrc provides)"), rc, Flags);
 		goto exit;
 	    }
 /*@=boundsread@*/
@@ -509,7 +521,7 @@ retry:
      */
     if (!strncmp(Name, "rpmlib(", sizeof("rpmlib(")-1)) {
 	if (rpmCheckRpmlibProvides(dep)) {
-	    rpmdsNotify(dep, _("(rpmlib provides)"), rc);
+	    rc = _rpmdsNotify_if(dep, _("(rpmlib provides)"), rc, Flags);
 	    goto exit;
 	}
 	goto unsatisfied;
@@ -538,7 +550,7 @@ retry:
 			ts->removedPackages, ts->numRemovedPackages, 1);
 
 	    while ((h = rpmdbNextIterator(mi)) != NULL) {
-		rpmdsNotify(dep, _("(db files)"), rc);
+		rc = _rpmdsNotify_if(dep, _("(db files)"), rc, Flags);
 		mi = rpmdbFreeIterator(mi);
 		goto exit;
 	    }
@@ -551,7 +563,7 @@ retry:
 			ts->removedPackages, ts->numRemovedPackages, 1);
 	while ((h = rpmdbNextIterator(mi)) != NULL) {
 	    if (rpmdsAnyMatchesDep(h, dep, _rpmds_nopromote)) {
-		rpmdsNotify(dep, _("(db provides)"), rc);
+		rc = _rpmdsNotify_if(dep, _("(db provides)"), rc, Flags);
 		mi = rpmdbFreeIterator(mi);
 		goto exit;
 	    }
@@ -564,7 +576,7 @@ retry:
 			ts->removedPackages, ts->numRemovedPackages, 1);
 	while ((h = rpmdbNextIterator(mi)) != NULL) {
 	    if (rpmdsAnyMatchesDep(h, dep, _rpmds_nopromote)) {
-		rpmdsNotify(dep, _("(db package)"), rc);
+		rc = _rpmdsNotify_if(dep, _("(db package)"), rc, Flags);
 		mi = rpmdbFreeIterator(mi);
 		goto exit;
 	    }
@@ -593,10 +605,16 @@ retry:
 /*@=boundsread@*/
 
 unsatisfied:
-    rc = 1;	/* dependency is unsatisfied */
-    rpmdsNotify(dep, NULL, rc);
+    /* dependency is unsatisfied */
+    rc = _rpmdsNotify_if(dep, NULL, 1, Flags);
 
 exit:
+    /* if "a" suggests "b", rpm rightfully allows to remove "b" */
+    /* but rpm must not put in cache that "b" can be removed, */
+    /* because if "c" requires "b", rpm must not allow to remove "b" */
+    if (Flags & RPMSENSE_MISSINGOK)
+	_cacheThisRC = 0;
+
     /*
      * If dbiOpen/dbiPut fails (e.g. permissions), we can't cache.
      */
@@ -965,6 +983,8 @@ static inline /*@observer@*/ const char 
 	return "Requires(postun):";
     if (f & RPMSENSE_SCRIPT_VERIFY)
 	return "Requires(verify):";
+    if (f & RPMSENSE_MISSINGOK)
+	return "Requires(hint):";
     if (f & RPMSENSE_FIND_REQUIRES)
 	return "Requires(auto):";
     return "Requires:";