these 4 derivations will be built:
  /nix/store/cbc6i4wmd2hmhiwdwr405hqml1al7m25-dsh-source.drv
  /nix/store/3b70kx98ffqf8zp46ak9h14y0561nnf3-dsh-0.1.5-rc.3-npm-deps.drv
  /nix/store/g8lj9fpccxkm4y10zxz7d9wzgyjyawvs-dsh-0.1.5-rc.3.drv
  /nix/store/63670n1frcc931kx9cfxik8f2d3in0ha-check-dsh.drv