this derivation will be built:
  /nix/store/6kb1q3va76fy01n2h7ajnjwhm7z3apss-devshell.drv
this path will be fetched (0.0 KiB download, 5.8 KiB unpacked):
  /nix/store/3p666rvj6s4rixwhaf59mjy6k0py9jcf-devshell-dir