lixPackageSets.stable.nix-fast-build: init (#396601)

pkgs/tools/package-management/lix/common-nix-eval-jobs.nix

@@ -40,6 +40,14 @@ stdenv.mkDerivation {
   # point 'nix edit' and ofborg at the file that defines the attribute,
   # not this common file.
   pos = builtins.unsafeGetAttrPos "version" args;
+
+  # Since this package is intimately tied to a specific Nix release, we
+  # propagate the Nix used for building it to make it easier for users
+  # downstream to reference it.
+  passthru = {
+    nix = lix;
+  };
+
   meta = {
     description = "Hydra's builtin `hydra-eval-jobs` as a standalone tool";
     mainProgram = "nix-eval-jobs";

pkgs/tools/package-management/lix/default.nix

@@ -12,6 +12,7 @@
   ncurses,
   stdenv,
   clangStdenv,
+  nix-fast-build,
 
   storeDir ? "/nix/store",
   stateDir ? "/nix/var",
@@ -85,6 +86,10 @@ let
         nix-eval-jobs = self.callPackage (callPackage ./common-nix-eval-jobs.nix nix-eval-jobs-args) {
           stdenv = lixStdenv;
         };
+
+        nix-fast-build = nix-fast-build.override {
+          inherit (self) nix-eval-jobs;
+        };
       }
     );
 in