1 files changed, 6 insertions, 2 deletions
diff --git a/default.nix b/default.nix
index 758626b..4caf76a 100644
--- a/default.nix
+++ b/default.nix
@@ -1,4 +1,4 @@
-{ pkgs ? import <nixpkgs> {
+{ pkgs ? import (import ./nix/sources.nix).nixpkgs {
     overlays = [
       (self: super: {
         tree-sitter = super.tree-sitter.overrideAttrs (oldAttrs: {
@@ -44,7 +44,10 @@ let
 
   haskellPackages = pkgs.haskellPackages.override {
     overrides = self: super: {
-      lingo = pkgs.haskell.lib.doJailbreak (pkgs.haskell.lib.markUnbroken super.lingo);
+      diff-parse = pkgs.haskell.lib.appendPatch super.diff-parse
+        ./diff-parse.patch;
+      lingo = pkgs.haskell.lib.doJailbreak
+        (pkgs.haskell.lib.markUnbroken super.lingo);
       anissue = (super.callCabal2nix "anissue" ./. ({
         inherit (pkgs) tree-sitter;
       } // pkgs.lib.filterAttrs (_: pkgs.lib.isDerivation)
@@ -56,6 +59,7 @@ let
           dependencies = [
             pkgs.coreutils
             pkgs.git
+            pkgs.patchutils
           ];
         };
         postInstall = ''