these 4 derivations will be built:
  /nix/store/gbqw6fkxga056nik530cynczc7c724x5-clan-runtime.drv
  /nix/store/sxgizsml1h4s60dkfd17b12hq1xn9xg5-clan-cli-source.drv
  /nix/store/60812mszn0wqb6mycfjhpw68impixkv1-clan-cli.drv
  /nix/store/0np31prnb9m7dw42g6dp8ibr5wkz15np-nix-shell.drv