add ci job to check if schema is up to date

.github/workflows/ci.yml

@@ -91,3 +91,19 @@ jobs:
           instance: https://cache.icewind.me
           authToken: '${{ secrets.ATTIC_TOKEN }}'
       - run: nix build .#test
+
+  check-schema:
+    runs-on: ubuntu-latest
+    needs: check
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v25
+      - uses: icewind1991/attic-action@v1
+        with:
+          name: ci
+          instance: https://cache.icewind.me
+          authToken: '${{ secrets.ATTIC_TOKEN }}'
+      - run: nix run .#demostf-parser-schema > schema.json
+      - run: |
+          git diff
+          git diff-index --quiet HEAD --

flake.nix

@@ -87,6 +87,7 @@
           };
         };
       };
+      overlayPackages = builtins.attrNames ((import ./nix/overlay.nix) {} {});
     in rec {
       packages =
         lib.attrsets.genAttrs targets (target:
@@ -101,7 +102,7 @@
                 };
             }))
         // rec {
-          inherit (pkgs) demostf-parser demostf-parser-codegen demostf-parser-codegen-events demostf-parser-codegen-props;
+          inherit (pkgs) demostf-parser demostf-parser-codegen demostf-parser-codegen-events demostf-parser-codegen-props demostf-parser-schema;
           check = hostNaersk.buildPackage (nearskOpt
             // {
               mode = "check";

nix/codegen.nix

@@ -4,7 +4,6 @@
   lib,
 }: let
   inherit (lib.sources) sourceByRegex;
-  src = sourceByRegex ../. ["Cargo.*" "(src|benches)(/.*)?"];
 in
   rustPlatform.buildRustPackage {
     pname = "demostf-parser-codegen";
@@ -14,7 +13,7 @@ in
       --bin codegen
     '';
 
-    src = lib.traceVal src;
+    src = sourceByRegex ../. ["Cargo.*" "(src|benches)(/.*)?"];
 
     buildType = "debug";
     buildFeatures = ["codegen"];
@@ -24,4 +23,6 @@ in
     cargoLock = {
       lockFile = ../Cargo.lock;
     };
+
+    meta.mainProgram = "codegen";
   }

nix/overlay.nix

@@ -9,4 +9,6 @@ final: prev: {
     ${final.demostf-parser-codegen}/bin/codegen ${../test_data/short-2024.dem} props > $out
     ${final.rustfmt}/bin/rustfmt $out
   '';
+  demostf-parser-schema = final.callPackage ./schema.nix {};
+
 }

nix/schema.nix

@@ -4,7 +4,6 @@
   lib,
 }: let
   inherit (lib.sources) sourceByRegex;
-  src = sourceByRegex ../. ["Cargo.*" "(src|benches)(/.*)?"];
 in
   rustPlatform.buildRustPackage {
     pname = "demostf-parser-schema";
@@ -14,7 +13,7 @@ in
       --bin schema
     '';
 
-    src = lib.traceVal src;
+    src = sourceByRegex ../. ["Cargo.*" "(src|benches)(/.*)?"];
 
     buildType = "debug";
     buildFeatures = ["schema"];
@@ -24,4 +23,6 @@ in
     cargoLock = {
       lockFile = ../Cargo.lock;
     };
+
+    meta.mainProgram = "schema";
   }