these 3 derivations will be built:
  /nix/store/mjc2i5djx85i5dhnh3x5q0kcnlyr1z8l-source.drv
  /nix/store/qyj8ffwdyn857ryk318ik6yahjqhc3n1-mardi-gras-0.32.0-go-modules.drv
  /nix/store/8cqnx8jk0bqkinlfqdwspl73v485k2f1-mardi-gras-0.32.0.drv