these 3 derivations will be built:
  /nix/store/ixlh2qsishvhg426r1c1l0yjmj006pcv-dsh-source.drv
  /nix/store/4vgm2zl4az41f0p2dnzqiirc3lfpcawq-dsh-0.1.5-rc.2-npm-deps.drv
  /nix/store/p5wz4w0bhfmcyj5inzrdgs50c0m1mmih-dsh-0.1.5-rc.2.drv