From 2e931f29f4e935ac7d206fe851935491666c8e30 Mon Sep 17 00:00:00 2001
From: Tristan Sloughter <t@crashfast.com>
Date: Sun, 23 Aug 2015 17:42:25 -0500
Subject: don't error on upgrade if user removes top level dep

---
 src/rebar_prv_upgrade.erl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/rebar_prv_upgrade.erl b/src/rebar_prv_upgrade.erl
index 7385cfe..97d1953 100644
--- a/src/rebar_prv_upgrade.erl
+++ b/src/rebar_prv_upgrade.erl
@@ -100,7 +100,8 @@ prepare_locks([Name|Names], Deps, Locks, Unlocks) ->
         {_, _, 0} = Lock ->
             case rebar_utils:tup_find(AtomName, Deps) of
                 false ->
-                    ?PRV_ERROR({unknown_dependency, Name});
+                    ?WARN("Dependency ~s has been removed and will not be upgraded", [Name]),
+                    prepare_locks(Names, Deps, Locks, Unlocks);
                 Dep ->
                     {Source, NewLocks, NewUnlocks} = prepare_lock(Dep, Lock, Locks),
                     prepare_locks(Names, Deps, NewLocks,
-- 
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