these 3 derivations will be built:
  /nix/store/6mdjqkdn626zzj81hhynrkj8s5p4k85a-source.drv
  /nix/store/i9xhyymnzgyhwrjsqcill0cnj6mjqca7-mcp-remote-0.15.1.drv
  /nix/store/836ms7cc57ww4dv60b7hskn6vkvjfimg-check-mcp-remote.drv