feat: add container-use package and fix goose-cli libclang dependency

- Add dagger/container-use (v0.4.2) for containerized coding agent environments
- Fix goose-cli build by adding llvmPackages.libclang for bindgen
- Clean up skillsmcp package (remove custom fastmcp override, use nixos-unstable)
- Remove broken update.py script from goose-cli
- Add treefmt.toml for consistent formatting
- Update README with all current packages

README.md

@@ -12,6 +12,7 @@ A custom Nix overlay and flake providing additional packages not found in upstre
 
 | Package | Description | Category |
 |---------|-------------|----------|
+| `container-use` | Containerized environments for coding agents | AI Coding Agents |
 | `goose-cli` | CLI for Goose - a local, extensible, open source AI agent that automates engineering tasks | AI Coding Agents |
 | `mcp-gateway` | Universal Model Context Protocol gateway that sits between AI client and MCP tools/servers | MCP Servers |
 | `skillsmcp` | MCP server that exposes Agent Skills to AI agents via the Model Context Protocol | MCP Servers |

flake.lock

@@ -75,16 +75,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1777946660,
+        "lastModified": 1777954456,
-        "narHash": "sha256-iw3XDIG6xxk+AZTcawCLHf6i9i4tXRzLZEoV9xhRToQ=",
+        "narHash": "sha256-hGdgeU2Nk87RAuZyYjyDjFL6LK7dAZN5RE9+hrDTkDU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "bc57abace07689cfd34203aa5fb4027514895987",
+        "rev": "549bd84d6279f9852cae6225e372cc67fb91a4c1",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -6,7 +6,7 @@
   };
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     systems.url = "github:nix-systems/default";
     blueprint = {
       url = "github:numtide/blueprint";
@@ -40,9 +40,21 @@
         nixpkgs.config.allowUnfree = true;
       };
 
+      extraPackages = inputs.nixpkgs.lib.genAttrs (builtins.attrNames blueprintOutputs.packages) (
+        system:
+        let
+          pkgs = inputs.nixpkgs.legacyPackages.${system};
+        in
+        {
+          container-use = pkgs.callPackage ./packages/container-use/package.nix { };
+        }
+      );
+
     in
     blueprintOutputs
     // {
+      packages = inputs.nixpkgs.lib.recursiveUpdate blueprintOutputs.packages extraPackages;
+
       overlays = {
         default = import ./overlays {
           inherit (blueprintOutputs) packages;

packages/container-use/default.nix

@@ -0,0 +1 @@
+{ pkgs, ... }: pkgs.callPackage ./package.nix { }

packages/container-use/package.nix

@@ -0,0 +1,38 @@
+{
+  lib,
+  buildGoModule,
+  fetchFromGitHub,
+}:
+
+buildGoModule rec {
+  pname = "container-use";
+  version = "0.4.2";
+
+  src = fetchFromGitHub {
+    owner = "dagger";
+    repo = "container-use";
+    rev = "v${version}";
+    hash = "sha256-YKgS142a9SL1ZEjS+VArxwUzQX961zwlGuHW43AMxQA=";
+  };
+
+  vendorHash = "sha256-M7YhEm9Gmjv2gxB2r7AS5JLLThEkvtJfLBrB+cvsN5c=";
+
+  env.CGO_ENABLED = 0;
+
+  subPackages = [ "cmd/container-use" ];
+
+  doCheck = false;
+
+  ldflags = [
+    "-s -w -X main.version=v${version}"
+  ];
+
+  meta = with lib; {
+    description = "Containerized environments for coding agents";
+    homepage = "https://github.com/dagger/container-use";
+    changelog = "https://github.com/dagger/container-use/releases/tag/v${version}";
+    license = licenses.asl20;
+    mainProgram = "container-use";
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+}

packages/skillsmcp/default.nix

@@ -1,4 +1 @@
-{ pkgs, ... }:
+{ pkgs, ... }: pkgs.callPackage ./package.nix { }
-pkgs.callPackage ./package.nix {
-  fastmcp = pkgs.callPackage ./fastmcp.nix { };
-}

packages/skillsmcp/fastmcp.nix

@@ -1,7 +0,0 @@
-{ python3Packages }:
-
-# Use fastmcp from nixpkgs but disable tests
-python3Packages.fastmcp.overrideAttrs (old: {
-  doCheck = false;
-  doInstallCheck = false;
-})

packages/skillsmcp/package.nix

@@ -2,7 +2,6 @@
   lib,
   python3Packages,
   fetchFromGitHub,
-  fastmcp,
 }:
 
 python3Packages.buildPythonApplication rec {
@@ -22,7 +21,7 @@ python3Packages.buildPythonApplication rec {
   ];
 
   dependencies = [
-    fastmcp
+    python3Packages.fastmcp
     python3Packages.pyyaml
   ];
 
@@ -30,12 +29,6 @@ python3Packages.buildPythonApplication rec {
   doCheck = false;
   pythonImportsCheck = [ "skillsmcp" ];
 
-  # Patch to accept fastmcp 2.x from nixpkgs
-  postPatch = ''
-    # Replace version requirement in pyproject.toml
-    sed -i 's/"fastmcp>=3.0.0"/"fastmcp>=2.0"/' pyproject.toml
-  '';
-
   passthru.category = "MCP Servers";
 
   meta = with lib; {