these 4 derivations will be built:
  /nix/store/qxnqn4pb65dmnzr1flg44bq8kcm8r7p1-clan-cli-source.drv
  /nix/store/12limfi9r5havh4q62q0665n4kqnyz3p-clan-cli.drv
  /nix/store/s1an6z3zbhmj16agdxnm19rlxphjdjds-closure-info.drv
  /nix/store/s1jdqxbfrhmpy5xl5fqb9s9y7fzl1a11-check-vars.drv