these 4 derivations will be built:
  /nix/store/fh9jxlbgwqk5bgh1399wp4ldlvkb6w0x-closure-info.drv
  /nix/store/ma320nyc5fypaj0388vpzzv12irwhn4k-clan-cli-source.drv
  /nix/store/nkxq593i3f22axyka3li5yg82jdg7gin-clan-cli.drv
  /nix/store/76cg2cxrpyb7gz2g92bppk0mr4klwlla-check-vars.drv
error: path '/nix/store/z94p75ry1qnckf2h3ai9vdyivyis4zwm-check-vars' is not valid
error: Cannot build '/nix/store/76cg2cxrpyb7gz2g92bppk0mr4klwlla-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/z94p75ry1qnckf2h3ai9vdyivyis4zwm-check-vars