fix: pass go override in overlays

Author: staaldraad

nix/overlays/default.nix

@@ -62,7 +62,9 @@
     };
 
     # place the gatekeeper module in the expected libpam location
-    gatekeeper = self.inputs.gatekeeper.packages.${final.system}.default;
+    gatekeeper = self.inputs.gatekeeper.packages.${final.system}.default.override {
+      go = self.inputs.nixpkgs-go124.legacyPackages.${final.system}.go_1_24;
+    };
     linux-pam = prev.linux-pam.overrideAttrs (old: {
       postInstall =
         (old.postInstall or "")

nix/packages/gatekeeper.nix

@@ -4,14 +4,7 @@
     { system, ... }:
     let
 
-      go124 =
-        let
-          candidate = inputs.nixpkgs-go124.legacyPackages.${system};
-        in
-        if candidate ? go_1_24 then
-          candidate.go_1_24
-        else
-          throw "❌ nixpkgs-go124.${system} does not provide go_1_24!";
+      go124 = inputs.nixpkgs-go124.legacyPackages.${system}.go_1_24;
     in
     {
       packages.gatekeeper = inputs.gatekeeper.lib.${system}.makeGatekeeper { go = go124; };