utils: skip migration of broken formulae symlinks.

Closes https://github.com/Homebrew/homebrew-core/issues/4973
2016-09-19 10:40:16 +01:00 · 2016-09-19 10:40:16 +01:00 · 569dbf4d05
commit 569dbf4d05
parent a2f19f0a67
1 changed files with 5 additions and 1 deletions
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@ -634,7 +634,11 @@ def migrate_legacy_keg_symlinks_if_necessary
      begin
        (HOMEBREW_PREFIX/"opt/#{name}").realpath
      rescue Errno::ENOENT
-        Formulary.factory(name).installed_prefix
+        begin
+          Formulary.factory(name).installed_prefix
+        rescue
+          next
+        end
      end
    end
    dst = HOMEBREW_LINKED_KEGS/name