these 6 derivations will be built:
  /nix/store/5lcb23rrdvvkbfq75qyj9d44z8iq6fml-devshell-env.bash.drv
  /nix/store/9zyfrw1080rffmfqzbqg4imidvybswxc-naked-stdenv.drv
  /nix/store/g011rxyqkgq11yzvpgp4q5wiwkii2b9s-builder.pl.drv
  /nix/store/nldl1z87b0llkp9nax3qv9zhvq2k2rqy-devshell-entrypoint.drv
  /nix/store/gcxzsv83fh3hr27h41abak3fjjrpbqka-devshell-dir.drv
  /nix/store/s67vr742sf5hkmil4qcn5jn67dk7a6r4-devshell.drv