these 4 derivations will be built:
  /nix/store/dh80lyw8n3rdgz6qpxc9dsr33pkg88yh-source.drv
  /nix/store/cimqq2w9fxr2rbhccavqqx3sj3azavfm-mardi-gras-0.36.0-go-modules.drv
  /nix/store/77y1ya8h7j7vdwwl8ia8fvrj5hlh473f-mardi-gras-0.36.0.drv
  /nix/store/j6x1fdq9dpiykgqg45bvqf86liqqrw6v-check-mardi-gras.drv