these 5 derivations will be built:
  /nix/store/sx26lzh1jiqj76dpvhy5camiv7vyy1xx-dsh-0.1.5-rc.3.tgz.drv
  /nix/store/07dcr471hsggcw02cqmfhx4ndms37cyn-dsh-source.drv
  /nix/store/zvbgdssb0hnhg4kb9f1d10shwk2bbdlq-dsh-0.1.5-rc.3-npm-deps.drv
  /nix/store/x5iw4bmv1s6wcgpl77lkjh34a80nw762-dsh-0.1.5-rc.3.drv
  /nix/store/yxcdc769w9p23pixqxgxr7r9x7nhcv4w-check-dsh.drv