fix: fmt and go version, hopefully

Author: staaldraad

flake.lock

@@ -13,7 +13,7 @@
     treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
     git-hooks.url = "github:cachix/git-hooks.nix";
     git-hooks.inputs.nixpkgs.follows = "nixpkgs";
-    nixpkgs-go124.url = "github:Nixos/nixpkgs/d2ac4dfa61fba987a84a0a81555da57ae0b9a2b0";
+    nixpkgs-go124.url = "github:Nixos/nixpkgs/3b9f00d7a7bf68acd4c4abb9d43695afb04e03a5";
     gatekeeper.url = "git+ssh://[email protected]/supabase/jit-db-gatekeeper?ref=sam/add-flake-parts&rev=34ba4a222c15b2480b837bbb3076508f36c9296f";
     gatekeeper.inputs.nixpkgs.follows = "nixpkgs";
   };

flake.nix

@@ -3,7 +3,15 @@
   perSystem =
     { system, ... }:
     let
-      go124 = inputs.nixpkgs-go124.legacyPackages.${system}.go_1_24;
+
+      go124 =
+        let
+          candidate = inputs.nixpkgs-go124.legacyPackages.${system};
+        in
+        if candidate ? go_1_24 then
+          candidate.go_1_24
+        else
+          throw "❌ nixpkgs-go124.${system} does not provide go_1_24!";
     in
     {
       packages.gatekeeper = inputs.gatekeeper.lib.${system}.makeGatekeeper { go = go124; };