these 5 derivations will be built:
  /nix/store/s7aln2m24d46wgl8ms5z594swslkymnc-clan-runtime.drv
  /nix/store/n8am44x0znmxhy1inb9s33zjyxycdw55-clan-cli-source.drv
  /nix/store/3k0jmd3z035y4jipgfpn7frqn7fam2mp-clan-cli.drv
  /nix/store/zpbhc3xgxw1igbfw7dyssvz0nyknpmhh-closure-info.drv
  /nix/store/yqp5zlwdc1yqc99hckmwvlhw6g2gjq2b-check-vars.drv