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tools.claude: fix MCP server configuration for Claude Code CLI
Use Claude CLI's native mcp add command instead of desktop config file.
This ensures MCP servers are properly registered and store paths stay current.
author
lassulus
date
(Jun 22, 2025, 8:26 PM CEST)
commit
3ef4ed20
3ef4ed2081caf2d55f34cd0c3b758981dc01811d
parent
75c3e5e3
75c3e5e34bc013399a1c377afa113d1614c6be5b
+16
-23
+1
-1
flake.nix
+1
-1
flake.nix
+6
lib/make-wrapper.nix
+6
lib/make-wrapper.nix
···
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passthru = (package.passthru or { }) // {
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inherit env flags preHook;
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};
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# Pass through original attributes
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inherit (package) meta;
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} // lib.optionalAttrs (package ? version) {
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inherit (package) version;
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} // lib.optionalAttrs (package ? pname) {
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inherit (package) pname;
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};
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}
+9
-22
tools/claude/flake-module.nix
+9
-22
tools/claude/flake-module.nix
···
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gitMcpPath = "${self.packages.${system}.git-mcp}/bin/git-mcp";
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tmuxMcpPath = "${self.packages.${system}.tmux-mcp}/bin/tmux-mcp";
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# Claude configuration
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claudeConfig = pkgs.writeText "claude-config.json" (builtins.toJSON {
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mcpServers = {
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"git-mcp" = {
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command = gitMcpPath;
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args = [];
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};
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"tmux-mcp" = {
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command = tmuxMcpPath;
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args = [];
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};
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};
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});
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-
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# Path to CLAUDE.md
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claudeMd = ./CLAUDE.md;
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in
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{
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packages.claude = self.libWithPkgs.${system}.makeWrapper pkgs.claude {
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packages.claude = self.libWithPkgs.${system}.makeWrapper (self.lib.halalify pkgs.claude-code) {
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preHook = ''
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# Set up Claude config directory
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export CLAUDE_CONFIG_DIR="$HOME/Library/Application Support/Claude"
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mkdir -p "$CLAUDE_CONFIG_DIR"
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# Copy our config to Claude's config location
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cp ${claudeConfig} "$CLAUDE_CONFIG_DIR/claude_desktop_config.json"
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# Configure MCP servers using Claude CLI
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if claude mcp add git-mcp "${gitMcpPath}" 2>/dev/null && \
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claude mcp add tmux-mcp "${tmuxMcpPath}" 2>/dev/null; then
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echo "MCP servers configured successfully" >&2
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else
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echo "Warning: Could not configure MCP servers" >&2
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fi
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# Set up CLAUDE.md if it doesn't exist
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CLAUDE_MD_DIR="''${CLAUDE_MD_DIR:-$HOME/.claude}"
···
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'';
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};
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};
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}
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}