refactor: consume computer-use packages from NUR (#375)

* refactor: consume computer-use packages from NUR

* fix: expose flake inputs to package overlays

Package overlays are imported from two places with different argument
shapes: outputs/default.nix passes a set containing `inputs`, while
modules/base/overlays.nix passes the NixOS module args, where genSpecialArgs
spreads each flake input as a top-level argument. The new NUR-backed
overlays read `inputs.nur-ryan4yin`, so evaluation failed on the module
path. Also expose the whole flake input set as `inputs` in genSpecialArgs.

* chore: bump nur-ryan4yin input

Update the locked nur-packages revision to the current main (nixpkgs
26.05, unused packages removed).

flake.lock

@@ -919,11 +919,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1782178436,
-        "narHash": "sha256-1gIhdoBDzKv0T+NsqYFkjEDiwAeI+dDab1Dfg4bavO0=",
+        "lastModified": 1791090163,
+        "narHash": "sha256-TP5TknnQUcLs6b8/gM03LycJEgNPgl6L9fv+qXVO5+E=",
         "owner": "ryan4yin",
         "repo": "nur-packages",
-        "rev": "c3207ff6d6bed0a35511b0fb7133d07d4b00e118",
+        "rev": "d88446404e5e048cee5c68d331ef162cc538277f",
         "type": "github"
       },
       "original": {

flake.nix

@@ -176,8 +176,7 @@
       flake = false;
     };
 
-    # Personal NUR packages. Nothing consumes it right now; kept ready for
-    # packages not yet available from the other inputs.
+    # Personal NUR packages.
     nur-ryan4yin = {
       url = "github:ryan4yin/nur-packages";
       inputs.nixpkgs.follows = "nixpkgs";

outputs/default.nix

@@ -21,7 +21,15 @@ let
     in
     inputs
     // {
-      inherit mylib myvars pkgs-stable;
+      # The spread above exposes each flake input as a top-level argument.
+      # Also expose the whole set as `inputs`, which the package overlays
+      # (`overlays/*.nix`) receive via `import ../overlays args`.
+      inherit
+        inputs
+        mylib
+        myvars
+        pkgs-stable
+        ;
 
       # use unstable branch for some packages to get the latest updates
       # pkgs-unstable = import inputs.nixpkgs-unstable {

overlays/README.md

@@ -11,8 +11,8 @@ through [Overlays - NixOS & Flakes Book](https://nixos-and-flakes.thiscute.world
 overlays/
 ├── README.md
 ├── default.nix            # Entrypoint for all overlays
-├── computer-use-linux.nix # trycua/computer-use-linux package
-├── cua-driver.nix         # trycua/cua driver (cua-driver) package
+├── computer-use-linux.nix # computer-use-linux from ryan4yin/nur-packages
+├── cua-driver.nix         # cua-driver from ryan4yin/nur-packages
 ├── smartctl-exporter/     # smartctl_exporter pinned to the #329 fix
 │   └── default.nix
 └── fcitx5/                # Chinese input method configuration
@@ -55,8 +55,9 @@ This overlay provides:
 
 ### 3. Package overlays
 
-- `computer-use-linux.nix`: packages `pkgs/computer-use-linux`.
-- `cua-driver.nix`: packages `pkgs/cua-driver` (used by the computer-use VMs).
+- `computer-use-linux.nix`: exposes `computer-use-linux` from the `nur-ryan4yin` flake input.
+- `cua-driver.nix`: exposes `cua-driver` from the `nur-ryan4yin` flake input (used by the
+  computer-use VMs).
 - `smartctl-exporter/`: pins `prometheus-smartctl-exporter` to the upstream commit carrying PR
   [#329](https://github.com/prometheus-community/smartctl_exporter/pull/329) until nixpkgs provides
   a version containing the fix; see `overlays/smartctl-exporter/default.nix`.

overlays/computer-use-linux.nix

@@ -1,3 +1,4 @@
-_: _final: prev: {
-  computer-use-linux = prev.callPackage ../pkgs/computer-use-linux { };
+{ inputs, ... }: _final: prev: {
+  computer-use-linux =
+    inputs.nur-ryan4yin.packages.${prev.stdenv.hostPlatform.system}.computer-use-linux;
 }

overlays/cua-driver.nix

@@ -1,3 +1,3 @@
-_: _final: prev: {
-  cua-driver = prev.callPackage ../pkgs/cua-driver { };
+{ inputs, ... }: _final: prev: {
+  cua-driver = inputs.nur-ryan4yin.packages.${prev.stdenv.hostPlatform.system}.cua-driver;
 }

pkgs/computer-use-linux/default.nix

@@ -1,56 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  autoPatchelfHook,
-}:
-let
-  version = "0.7.1";
-
-  # Prebuilt release binaries; the crate is not packaged in nixpkgs.
-  assets = {
-    x86_64-linux = {
-      target = "x86_64-unknown-linux-gnu";
-      hash = "sha256-Wp91gQrUKBjIoxIeEsRug4MYgZ6o6bcaDJoqq+RmmbQ=";
-    };
-    aarch64-linux = {
-      target = "aarch64-unknown-linux-gnu";
-      hash = "sha256-e376naC15EyNGfDN3ERTmvCPzd97v7WPzzVYq4zCjps=";
-    };
-  };
-
-  asset =
-    assets.${stdenv.hostPlatform.system}
-      or (throw "computer-use-linux: unsupported system ${stdenv.hostPlatform.system}");
-in
-stdenv.mkDerivation {
-  pname = "computer-use-linux";
-  inherit version;
-
-  src = fetchurl {
-    url = "https://github.com/agent-sh/computer-use-linux/releases/download/v${version}/computer-use-linux-${asset.target}";
-    inherit (asset) hash;
-  };
-
-  nativeBuildInputs = [ autoPatchelfHook ];
-  buildInputs = [ stdenv.cc.cc.lib ];
-
-  dontUnpack = true;
-
-  installPhase = ''
-    runHook preInstall
-    install -Dm755 $src $out/bin/computer-use-linux
-    runHook postInstall
-  '';
-
-  meta = {
-    description = "MCP server and CLI to control a Linux desktop";
-    homepage = "https://github.com/agent-sh/computer-use-linux";
-    license = lib.licenses.mit;
-    platforms = [
-      "x86_64-linux"
-      "aarch64-linux"
-    ];
-    mainProgram = "computer-use-linux";
-  };
-}

pkgs/cua-driver/default.nix

@@ -1,55 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  autoPatchelfHook,
-  libxkbcommon,
-  xorg,
-}:
-let
-  version = "0.24.0";
-
-  # Prebuilt release binary; the crate is not packaged in nixpkgs.
-  asset = {
-    url = "https://github.com/trycua/cua/releases/download/cua-driver-rs-v${version}/cua-driver-rs-${version}-linux-x86_64-binary.tar.gz";
-    hash = "sha256-s7j/Ullf6xESGaoKyQ47NmGMxoaqggWu1PPn4aZ8e2Q=";
-  };
-in
-stdenv.mkDerivation {
-  pname = "cua-driver";
-  inherit version;
-
-  src = fetchurl asset;
-
-  nativeBuildInputs = [ autoPatchelfHook ];
-  buildInputs = [
-    stdenv.cc.cc.lib
-    xorg.libX11
-    xorg.libXi
-    libxkbcommon
-  ];
-
-  sourceRoot = ".";
-  dontConfigure = true;
-  dontBuild = true;
-
-  installPhase = ''
-    runHook preInstall
-    install -Dm755 cua-driver $out/bin/cua-driver
-    install -Dm755 cua-cursor-theme $out/lib/cua-driver/cua-cursor-theme
-    install -Dm755 libcua_driver_sdk.so $out/lib/cua-driver/libcua_driver_sdk.so
-    install -Dm755 cua_driver_node_runtime.node $out/lib/cua-driver/cua_driver_node_runtime.node
-    install -Dm644 cua_driver_abi.h $out/include/cua-driver/cua_driver_abi.h
-    mkdir -p $out/share/cua-driver
-    cp -r wayland-helper $out/share/cua-driver/wayland-helper
-    runHook postInstall
-  '';
-
-  meta = {
-    description = "Desktop-automation driver for computer-use agents (MCP/CLI)";
-    homepage = "https://github.com/trycua/cua";
-    license = lib.licenses.mit;
-    platforms = [ "x86_64-linux" ];
-    mainProgram = "cua-driver";
-  };
-}