these 3 derivations will be built:
  /nix/store/2i4x2jzbjrdsyln0cfghm615gh8l1is3-source.drv
  /nix/store/2c8zkzss5ybp5g1ylcx5b3sncg7jd12g-mcp-remote-0.15.0.drv
  /nix/store/3m56knm9kj9zgz6af6ar7jgws2qxhv7g-check-mcp-remote.drv