prefer selecting packages by their primary name

src/apk_database.h

@@ -101,6 +101,7 @@ struct apk_name {
 	struct apk_name_array *rinstall_if;
 	unsigned is_dependency : 1;
 	unsigned auto_select_virtual: 1;
+	unsigned priority : 2;
 	unsigned int foreach_genid;
 	union {
 		struct apk_solver_name_state ss;

src/database.c

@@ -1439,9 +1439,11 @@ static int apk_db_name_rdepends(apk_hash_item item, void *pctx)
 	struct apk_provider *p;
 	struct apk_dependency *dep;
 	struct apk_name_array *touched;
+	unsigned num_virtual = 0;
 
 	apk_name_array_init(&touched);
 	foreach_array_item(p, name->providers) {
+		num_virtual += (p->pkg->name != name);
 		foreach_array_item(dep, p->pkg->depends) {
 			rname = dep->name;
 			rname->is_dependency |= !dep->conflict;
@@ -1460,6 +1462,12 @@ static int apk_db_name_rdepends(apk_hash_item item, void *pctx)
 			}
 		}
 	}
+	if (num_virtual == 0)
+		name->priority = 0;
+	else if (num_virtual != name->providers->num)
+		name->priority = 1;
+	else
+		name->priority = 2;
 	foreach_array_item(n0, touched)
 		(*n0)->state_int = 0;
 	apk_name_array_free(&touched);

src/solver.c

@@ -972,6 +972,20 @@ static int cmp_pkgname(const void *p1, const void *p2)
 	return strcmp(d1->name->name, d2->name->name);
 }
 
+static int compare_name_dequeue(const struct apk_name *a, const struct apk_name *b)
+{
+	int r;
+
+	r = (!!a->ss.requirers) - (!!b->ss.requirers);
+	if (r) return -r;
+
+	r = (int)a->priority - (int)b->priority;
+	if (r) return r;
+
+	r = a->ss.max_dep_chain - b->ss.max_dep_chain;
+	return -r;
+}
+
 int apk_solver_solve(struct apk_database *db,
 		     unsigned short solver_flags,
 		     struct apk_dependency_array *world,
@@ -1022,14 +1036,8 @@ restart:
 				name = name0;
 				break;
 			}
-			if (name == NULL)
-				goto prefer;
-			if ((!!name0->ss.requirers) - (!!name->ss.requirers) < 0)
-				continue;
-			if (name0->ss.max_dep_chain - name->ss.max_dep_chain < 0)
-				continue;
-		prefer:
-			name = name0;
+			if (!name || compare_name_dequeue(name0, name) < 0)
+				name = name0;
 		}
 		if (name == NULL)
 			break;