dotfiles/devshells/default.nix

67 lines
2.1 KiB
Nix

{ pkgs, ... }:
let
# MCP wrapper script that ensures Python is available for GUI apps
mcpNixosWrapper = pkgs.writeShellScriptBin "mcp-nixos-wrapper" ''
export PATH="${pkgs.python3}/bin:${pkgs.uv}/bin:$PATH"
exec ${pkgs.uv}/bin/uvx mcp-nixos "$@"
'';
# Generate MCP configs for GUI applications
mcpConfigForGUI = pkgs.writeText "mcp_settings.json" (builtins.toJSON {
mcpServers = {
nixos = {
type = "stdio";
command = "${mcpNixosWrapper}/bin/mcp-nixos-wrapper";
args = [ ];
};
};
});
# Script to install MCP configs for Claude Code and Codex
installMcpConfigs = pkgs.writeShellScriptBin "install-mcp-configs" ''
set -e
echo "Installing MCP configurations..."
mkdir -p "$HOME/.config/claude-code"
mkdir -p "$HOME/.config/codex"
cp ${mcpConfigForGUI} "$HOME/.config/claude-code/mcp_settings.json"
cp ${mcpConfigForGUI} "$HOME/.config/codex/mcp_settings.json"
echo " Installed MCP config to ~/.config/claude-code/mcp_settings.json"
echo " Installed MCP config to ~/.config/codex/mcp_settings.json"
echo ""
echo "Restart Claude Code and Codex to apply changes."
'';
in pkgs.mkShell {
name = "default";
packages = with pkgs; [
git
nixfmt-classic
uv
python3
mcpNixosWrapper
installMcpConfigs
];
shellHook = ''
export DOTFILES_ROOT="$PWD"
export XDG_CACHE_HOME="$DOTFILES_ROOT/.cache"
export UV_CACHE_DIR="$XDG_CACHE_HOME/uv"
export UV_TOOL_HOME="$XDG_CACHE_HOME/uv-tools"
export XDG_DATA_HOME="$DOTFILES_ROOT/.cache/xdg-data"
export UV_PYTHON_DOWNLOADS=never
export MCP_CONFIG_PATH="$DOTFILES_ROOT/.mcp.json"
mkdir -p "$XDG_CACHE_HOME" "$UV_CACHE_DIR" "$UV_TOOL_HOME" "$XDG_DATA_HOME"
alias mcp-nixos='XDG_CACHE_HOME="$XDG_CACHE_HOME" XDG_DATA_HOME="$XDG_DATA_HOME" UV_CACHE_DIR="$UV_CACHE_DIR" UV_TOOL_HOME="$UV_TOOL_HOME" UV_PYTHON_DOWNLOADS="$UV_PYTHON_DOWNLOADS" uvx mcp-nixos'
echo "Loaded default shell for dotfiles development"
echo "MCP helper alias ready: mcp-nixos"
echo ""
echo "To install MCP configs for Claude Code and Codex, run:"
echo " install-mcp-configs"
'';
}