dev: nix environment

flake.nix

@@ -1,38 +1,28 @@
 {
+  description = "Bevy controls library and examples";
+
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
+    hearth = {
+      url = "git+https://gitea.hectic-lab.com/hinterland/hearth.git";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     rust-overlay = {
       url = "github:oxalica/rust-overlay";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-        flake-utils.follows = "flake-utils";
-      };
+      inputs.nixpkgs.follows = "nixpkgs";
     };
   };
 
-  outputs = { self, nixpkgs, flake-utils, rust-overlay }:
-    flake-utils.lib.eachDefaultSystem
-      (system:
-        let
-          overlays = [ (import rust-overlay) ];
-          pkgs = import nixpkgs {
-            inherit system overlays;
-          };
-          rustToolchain = (pkgs.pkgsBuildHost.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml);
-	  nativeBuildInputs = with pkgs; [ rustToolchain pkg-config ];
-          buildInputs = with pkgs; [ 
-	    openssl 
-	    shellcheck
-	    file
-	  ];
-        in
-        with pkgs;
-        {
-          devShells.default = mkShell {
-            inherit buildInputs nativeBuildInputs;
-          };
-        }
-      );
-
+  outputs = { self, hearth, ... }@inputs:
+  let
+    flake = builtins.warn "Using the `flake` variable may produce a large source closure." ./.;
+    lib = import ./lib { inherit inputs flake self; };
+  in
+  hearth.lib.forAllSystemsWithPkgs lib.composedOverlays ({ system, pkgs }: {
+    legacyPackages.${system} = pkgs;
+    packages.${system} = import ./package { inherit self inputs flake pkgs; };
+    devShells.${system} = import ./devshell { inherit self inputs flake pkgs; };
+  }) // {
+    inherit lib;
+  };
 }