github: Re-generate the files on updates

.github/workflows/update.yml

@@ -48,3 +48,12 @@ jobs:
           pr-title: "Update flake.lock (${{ matrix.branch }})"
           token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
           branch: "update_flake_lock_action-${{ matrix.branch }}"
+
+      # TODO: do in one checkout + push the flake.lock update & the re-generation of the files
+      - name: Update autogenerated files
+        run: |
+          git checkout update_flake_lock_action-${{ matrix.branch }}
+          nix run .#generate-files
+          git add ./generated
+          git commit -m "generated: Update files"
+          git push

flake-modules/updates/default.nix

@@ -2,6 +2,21 @@
   perSystem =
     { pkgs, ... }:
     {
+      apps.generate-files.program = pkgs.writeShellApplication {
+        name = "generate-files";
+
+        text = ''
+          repo_root=$(git rev-parse --show-toplevel)
+          generated_dir=$repo_root/generated
+
+          # Rust-Analyzer
+          nix build .#rust-analyzer-options
+          cat ./result >"$generated_dir"/rust-analyzer.nix
+
+          nix fmt
+        '';
+      };
+
       packages = {
         rust-analyzer-options = pkgs.callPackage ./rust-analyzer.nix { };
       };