feat(templates): nix

parts/templates/default.nix

@@ -34,5 +34,10 @@
       path = ./rust;
       description = "A Rust template";
     };
+
+    nix = {
+      path = ./nix;
+      description = "A Nix template";
+    };
   };
 }

parts/templates/nix/default.nix

@@ -0,0 +1,22 @@
+{ lib, stdenv }:
+stdenv.mkDerivation {
+  pname = "example-nix";
+  version = "0.1.0";
+
+  src = lib.fileset.toSource {
+    root = ./.;
+    fileset = lib.fileset.intersection (lib.fileset.fromSource (lib.sources.cleanSource ./.)) (
+      lib.fileset.unions [
+        # files
+      ]
+    );
+  };
+
+  meta = {
+    homepage = "https://github.com/isabelroses/example-nix";
+    description = "An example Nix project";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ isabelroses ];
+    mainPackage = "example";
+  };
+}

parts/templates/nix/flake.nix

@@ -0,0 +1,29 @@
+{
+  description = "Nix Project Template";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      forAllSystems =
+        function:
+        nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed (
+          system: function nixpkgs.legacyPackages.${system}
+        );
+    in
+    {
+      packages = forAllSystems (pkgs: {
+        example = pkgs.callPackage ./default.nix { };
+        default = self.packages.${pkgs.stdenv.hostPlatform.system}.example;
+      });
+
+      devShells = forAllSystems (pkgs: {
+        default = pkgs.callPackage ./shell.nix { };
+      });
+
+      overlays.default = final: _: { example = final.callPackage ./default.nix { }; };
+    };
+}

parts/templates/nix/shell.nix

@@ -0,0 +1,10 @@
+{
+  eza,
+  callPackage,
+}:
+let
+  mainPkg = callPackage ./default.nix { };
+in
+mainPkg.overrideAttrs (oa: {
+  nativeBuildInputs = [ eza ] ++ (oa.nativeBuildInputs or [ ]);
+})