From daf9e1887eb8372946ad09865c36ae8f8e3abdcd Mon Sep 17 00:00:00 2001
From: Michael Schroeder <mls@suse.de>
Date: Tue, 23 May 2017 11:49:53 +0200
Subject: [PATCH] Add pool_best_solvables() function

This prunes a set of solvables to the best versions.
---
 src/libsolv.ver |  4 ++++
 src/policy.c    | 16 ++++++++++++++++
 src/policy.h    |  2 ++
 3 files changed, 22 insertions(+)

diff --git a/src/libsolv.ver b/src/libsolv.ver
index 19f98bbf..d65c0d66 100644
--- a/src/libsolv.ver
+++ b/src/libsolv.ver
@@ -422,3 +422,7 @@ SOLV_1.0 {
 	local:
 		*;
 };
+
+SOLV_1.1 {
+		pool_best_solvables;
+} SOLV_1.0;
diff --git a/src/policy.c b/src/policy.c
index 8b4c2e4b..a6d34415 100644
--- a/src/policy.c
+++ b/src/policy.c
@@ -1353,6 +1353,22 @@ policy_filter_unwanted(Solver *solv, Queue *plist, int mode)
     }
 }
 
+void
+pool_best_solvables(Pool *pool, Queue *plist, int flags)
+{
+  if (plist->count > 1)
+    prune_to_highest_prio(pool, plist);
+  if (plist->count > 1)
+    prune_to_best_arch(pool, plist);
+  if (plist->count > 1)
+    prune_to_best_version(pool, plist);
+  if (plist->count > 1)
+    {
+      dislike_old_versions(pool, plist);
+      sort_by_common_dep(pool, plist);
+    }
+}
+
 
 /* check if there is an illegal architecture change if
  * installed solvable s1 is replaced by s2 */
diff --git a/src/policy.h b/src/policy.h
index 0c3c7cb0..68f4db93 100644
--- a/src/policy.h
+++ b/src/policy.h
@@ -38,6 +38,8 @@ extern void policy_update_recommendsmap(Solver *solv);
 
 extern void policy_create_obsolete_index(Solver *solv);
 
+extern void pool_best_solvables(Pool *pool, Queue *plist, int flags);
+
 /* internal, do not use */
 extern void prune_to_best_version(Pool *pool, Queue *plist);
 extern void policy_prefer_favored(Solver *solv, Queue *plist);
-- 
2.47.3