these 4 derivations will be built:
  /nix/store/gq4zbwkwcrn0fgg6kk4pivhn5pq5ab3r-source.drv
  /nix/store/kcs8wlc3pxppb8vsxqrcy2glgvjwl68i-multica-0.8.1-go-modules.drv
  /nix/store/hx3dr67xga2n2hb9k2f2kynxv9ii8mxm-multica-0.8.1.drv
  /nix/store/q76asygkzk2pgzy5wslcpybl5bc5xlk4-check-multica.drv