these 5 derivations will be built:
  /nix/store/4ad6lrknylx8xn3zn9rxwfb7lisy4wkg-closure-info.drv
  /nix/store/hi5xdjwhj9iwcbc5v55vfm2paf3y5c21-clan-runtime.drv
  /nix/store/si2bf16i7pl7psy2q1aylygip3qvz2mv-clan-cli-source.drv
  /nix/store/ffyblpi79g2mfsainv235y7nv6wb6vj2-clan-cli.drv
  /nix/store/k67rx4x08qh66v1c3sr3kl0k5p01wxcp-check-vars.drv
error: path '/nix/store/i73j7mbypg1k0p7lwnakqcpy7aqkh46x-check-vars' is not valid
error: Cannot build '/nix/store/k67rx4x08qh66v1c3sr3kl0k5p01wxcp-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/i73j7mbypg1k0p7lwnakqcpy7aqkh46x-check-vars