[SpecSet] Raise a more detailed error when the lockfile might be corrupted

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/bundler/spec_set.rb b/lib/bundler/spec_set.rb
index 4674936d39..e6c30603f0 100644
--- a/lib/bundler/spec_set.rb
+++ b/lib/bundler/spec_set.rb
@@ -38,7 +38,10 @@ module Bundler
         elsif check
           return false
         elsif raise_on_missing
-          raise "Unable to find a spec satisfying #{dep} in the set. Perhaps the lockfile is corrupted?"
+          others = lookup[dep.name] if match_current_platform
+          message = "Unable to find a spec satisfying #{dep} in the set. Perhaps the lockfile is corrupted?"
+          message += " Found #{others.join(", ")} that did not match the current platform." if others && !others.empty?
+          raise GemNotFound, message
         end
       end