these 5 derivations will be built:
  /nix/store/vn6y9l1j61lmd9321w67fh7077c988sk-clan-runtime.drv
  /nix/store/4gxbq8rgrkqzsns2l3as7vrkmjlhm9s1-clan-cli-source.drv
  /nix/store/shsimnq6w233q5idr07j3mnzifj2mpfp-clan-cli.drv
  /nix/store/zwgbnmf6nb7ahk687zjlk2dyh8cpyv4i-closure-info.drv
  /nix/store/83j7i45yfbhg8wkxys3ay1xml3qi49xh-check-vars.drv
error: path '/nix/store/di9iy5rfcdgyn81dr9dar4kbgq19zc2c-check-vars' is not valid
error: Cannot build '/nix/store/83j7i45yfbhg8wkxys3ay1xml3qi49xh-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/di9iy5rfcdgyn81dr9dar4kbgq19zc2c-check-vars