1 files changed, 18 insertions, 0 deletions
diff --git a/krebs/5pkgs/haskell/nix-diff/nixos-system.patch b/krebs/5pkgs/haskell/nix-diff/nixos-system.patch
new file mode 100644
index 000000000..03e186aa9
--- /dev/null
+++ b/krebs/5pkgs/haskell/nix-diff/nixos-system.patch
@@ -0,0 +1,18 @@
+diff --git a/src/Main.hs b/src/Main.hs
+index 959ab8e..d3b6077 100644
+--- a/src/Main.hs
++++ b/src/Main.hs
+@@ -95,7 +95,12 @@ pathToText path =
+     underneath `/nix/store`, but this is the overwhelmingly common use case
+ -}
+ derivationName :: FilePath -> Text
+-derivationName = Data.Text.dropEnd 4 . Data.Text.drop 44 . pathToText
++derivationName p =
++    if Data.Text.isPrefixOf "nixos-system" s
++      then "nixos-system"
++      else s
++  where
++    s = Data.Text.dropEnd 4 . Data.Text.drop 44 . pathToText $ p
+ 
+ -- | Group input derivations by their name
+ groupByName :: Map FilePath (Set Text) -> Map Text (Map FilePath (Set Text))