Update check-path-support

Author: hamishmack

build.nix

@@ -6,11 +6,6 @@
 , nixpkgsArgs ? haskellNix.nixpkgsArgs
 , pkgs ? import nixpkgs nixpkgsArgs
 , evalPackages ? import nixpkgs nixpkgsArgs
-# This version is used to make our GitHub Action runners happy
-# Using `nixpkgs-unstable` currently results in:
-#   version `GLIBCXX_3.4.30' not found
-, nixpkgsForGitHubAction ? haskellNix.sources.nixpkgs-2211
-, pkgsForGitHubAction ? import nixpkgsForGitHubAction (nixpkgsArgs // { inherit (pkgs) system; })
 , ifdLevel ? 1000
 , compiler-nix-name ? throw "No `compiler-nix-name` passed to build.nix"
 , haskellNix ? (import ./default.nix {})
@@ -98,7 +93,7 @@ in rec {
       nix-tools = haskell.nix-tools-unchecked; # includes cabal-install and default-setup
     };
     check-materialization-concurrency = pkgs.buildPackages.callPackage ./scripts/check-materialization-concurrency/check.nix {};
-    check-path-support = pkgsForGitHubAction.buildPackages.callPackage ./scripts/check-path-support.nix {
+    check-path-support = pkgs.buildPackages.callPackage ./scripts/check-path-support.nix {
       inherit compiler-nix-name;
     };
   };