flake: Convert to uv2nix

flake.nix

@@ -3,32 +3,53 @@
 
   inputs.flake-utils.url = "github:numtide/flake-utils";
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
-  inputs.poetry2nix.url = "github:nix-community/poetry2nix";
-  inputs.poetry2nix.inputs.nixpkgs.follows = "nixpkgs";
 
-  outputs = { self, nixpkgs, flake-utils, poetry2nix }: {
-    overlay = nixpkgs.lib.composeManyExtensions [
-      poetry2nix.overlays.default
-      (final: prev: {
-        netplay-index = prev.poetry2nix.mkPoetryApplication {
-          projectDir = ./.;
-          checkPhase = "GEOIP_DATABASE_PATH=testdata/GeoLite2-Country.mmdb ASYNC_TEST_TIMEOUT=30 pytest";
-        };
-      })
-    ];
-  } // (flake-utils.lib.eachDefaultSystem (system:
+  inputs.uv2nix.url = "github:pyproject-nix/uv2nix";
+  inputs.uv2nix.inputs.nixpkgs.follows = "nixpkgs";
+  inputs.uv2nix.inputs.pyproject-nix.follows = "pyproject-nix";
+
+  inputs.pyproject-nix.url = "github:pyproject-nix/pyproject.nix";
+  inputs.pyproject-nix.inputs.nixpkgs.follows = "nixpkgs";
+
+  inputs.pyproject-build-systems.url = "github:pyproject-nix/build-system-pkgs";
+  inputs.pyproject-build-systems.inputs.nixpkgs.follows = "nixpkgs";
+  inputs.pyproject-build-systems.inputs.pyproject-nix.follows = "pyproject-nix";
+
+  outputs = { self, nixpkgs, flake-utils, uv2nix, pyproject-nix, pyproject-build-systems }:
   let
-      pkgs = import nixpkgs {
-        inherit system;
-        overlays = [ self.overlay ];
+    perSystem = flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        workspace = uv2nix.lib.workspace.loadWorkspace { workspaceRoot = ./.; };
+        overlay = workspace.mkPyprojectOverlay {
+          sourcePreference = "wheel";
+        };
+        python = pkgs.python310;
+        pythonSet =
+          (pkgs.callPackage pyproject-nix.build.packages { inherit python; })
+          .overrideScope (pkgs.lib.composeManyExtensions [
+            pyproject-build-systems.overlays.default
+            overlay
+          ]);
+        venv = pythonSet.mkVirtualEnv "netplay-index-env" workspace.deps.default;
+      in {
+        packages.netplay-index = venv;
+        packages.default = venv;
+
+        apps.default = {
+          type = "app";
+          program = "${venv}/bin/netplay-index";
         };
-    in rec {
-      packages.netplay-index = pkgs.netplay-index;
-      defaultPackage = pkgs.netplay-index;
 
         devShells.default = with pkgs; mkShell {
-        buildInputs = [ poetry uv ];
+          packages = [ uv ];
+        };
+      });
+  in
+    perSystem // {
+      overlays.default = final: prev: {
+        netplay-index = self.packages.${final.system}.netplay-index;
+      };
+      overlay = self.overlays.default;
     };
-    }
-  ));
 }