these 5 derivations will be built:
  /nix/store/z0y1l9hbialcbksnqjzq8z5qz4npa8vk-clan-runtime.drv
  /nix/store/49d4lwgm2ay61z4ik2g6r49zjfjfd15a-clan-cli-source.drv
  /nix/store/a295hzh4vh4r00rd179cbkrx585z284p-closure-info.drv
  /nix/store/mdpx35qkqmrv8rydidxf17n458s4s0l8-clan-cli.drv
  /nix/store/qgl1zpf214qarv9xsald1l1z9p1cpkyc-check-vars.drv
error: path '/nix/store/dld2hlzdnn43b28xix56qnmsy2mmw0md-check-vars' is not valid
error: Cannot build '/nix/store/qgl1zpf214qarv9xsald1l1z9p1cpkyc-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/dld2hlzdnn43b28xix56qnmsy2mmw0md-check-vars