fix: resolve code quality issues, add CI, and improve maintainability

- Remove useless nixConfig block (cache.nixos.org is default)
- Remove manual container-use override; let blueprint auto-discover it
- Add nixosModules.default so README example works
- Fix default launcher: use correct parameterized flake URL
- Replace deprecated sha256 with hash in goose-cli fetchers
- Fix LIBCLANG_PATH to include /lib subdirectory for libclang.so
- Drop --release from goose-cli tests (faster, more debug info)
- Use builtins.toFile in flake-inputs to avoid ARG_MAX risk
- Add lib.warn when overlay has no packages for a system
- Add passthru.updateScript to goose-cli, container-use, skillsmcp
- Fix skillsmcp version to 0.2.0+unstable (pinned to commit, not tag)
- Replace with lib; with explicit references in all meta blocks
- Add update.py script for goose-cli (referenced in AGENTS.md)
- Expand .gitignore with result-* and .direnv/
- Add GitHub Actions CI workflow (nix flake check + build)

packages/goose-cli/package.nix

@@ -40,7 +40,7 @@ rustPlatform.buildRustPackage rec {
   env.RUSTY_V8_ARCHIVE = librusty_v8;
 
   # bindgen (used by llama-cpp-sys-2) needs libclang
-  env.LIBCLANG_PATH = llvmPackages.libclang.lib;
+  env.LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
 
   # Build only the CLI package
   cargoBuildFlags = [
@@ -59,21 +59,28 @@ rustPlatform.buildRustPackage rec {
     mkdir -p $XDG_CONFIG_HOME $XDG_DATA_HOME $XDG_STATE_HOME $XDG_CACHE_HOME
 
     # Run tests for goose-cli package only
-    cargo test --package goose-cli --release
+    cargo test --package goose-cli
   '';
 
   doInstallCheck = true;
   nativeInstallCheckInputs = [ versionCheckHook ];
 
-  passthru.category = "AI Coding Agents";
+  passthru = {
+    category = "AI Coding Agents";
+    updateScript = [
+      "nix-update"
+      "--flake"
+      ".#goose-cli"
+    ];
+  };
 
-  meta = with lib; {
+  meta = {
     description = "CLI for Goose - a local, extensible, open source AI agent that automates engineering tasks";
     homepage = "https://github.com/block/goose";
     changelog = "https://github.com/block/goose/releases/tag/v${version}";
-    license = licenses.asl20;
-    sourceProvenance = with sourceTypes; [ fromSource ];
+    license = lib.licenses.asl20;
+    sourceProvenance = with lib.sourceTypes; [ fromSource ];
     mainProgram = "goose";
-    platforms = platforms.all;
+    platforms = lib.platforms.all;
   };
 }