fixup! fixup! build: add check workflow

Author: nathanregner

examples/external-deps/flake.nix

@@ -22,13 +22,13 @@
       packages = forAllSystems (
         system:
         let
-          pkgs = nixpkgs.legacyPackages.${system};
+          pkgs = import nixpkgs {
+            inherit system;
+            overlays = [ platformio2nix.overlays.default ];
+          };
         in
         {
-          default = pkgs.callPackage ./package.nix {
-            # TODO: provide an overlay
-            inherit (platformio2nix.packages.${system}) makePlatformIOSetupHook;
-          };
+          default = pkgs.callPackage ./package.nix { };
         }
       );
     };

examples/marlin/flake.nix

@@ -22,13 +22,13 @@
       packages = forAllSystems (
         system:
         let
-          pkgs = nixpkgs.legacyPackages.${system};
+          pkgs = import nixpkgs {
+            inherit system;
+            overlays = [ platformio2nix.overlays.default ];
+          };
         in
         {
-          default = pkgs.callPackage ./package.nix {
-            # TODO: provide an overlay
-            inherit (platformio2nix.packages.${system}) makePlatformIOSetupHook;
-          };
+          default = pkgs.callPackage ./package.nix { };
         }
       );
     };

flake.nix

@@ -149,5 +149,10 @@
             RUST_SRC_PATH = "${rustToolchain.passthru.availableComponents.rust-src}";
           };
       }
-    );
+    )
+    // {
+      overlays.default = final: prev: {
+        makePlatformIOSetupHook = final.callPackage ./setup-hook.nix { };
+      };
+    };
 }