these 2 derivations will be built:
  /nix/store/w6sfxrdd57vqwhvwdvdjpj45g95xb38s-devshell-dir.drv
  /nix/store/xj466yabi86v287ys2z2z468dk6b1hw7-devshell.drv
this path will be fetched (0.0 KiB download, 6.5 MiB unpacked):
  /nix/store/nr8j4a3pjfs0zd2c3s1xfdcz2bmdzyl4-deploy-rs-0.1.0