this derivation will be built:
  /nix/store/xkq4nhsrzvxn62h47h9nbwf1jafpn979-nix-shell.drv
these 5 paths will be fetched (0.0 KiB download, 4.0 KiB unpacked):
  /nix/store/y2phgzb9n4qvnnr6q49556z5918jppvz-apply
  /nix/store/cb1ixj73ignzasq0zac0fhl01azbvpl6-destroy
  /nix/store/y52ln1d6gmajwspqi8sa7gyr13c6x2w7-init
  /nix/store/j60c39pcbm72yxrlwdj7iw91m5gk0gk0-plan
  /nix/store/mnrhz0rg97cpyx548g1bbc97gqb0mqkj-tofu