these 5 derivations will be built:
  /nix/store/9xil15jzw1zhi8cm4yalfd3qxx9bxmjr-clan-runtime.drv
  /nix/store/2kjfjl75mkxcw6b1blf2bgqppd30vl4c-clan-cli-source.drv
  /nix/store/pnm6iclik5dmkg83wx9c8da98dvz7901-clan-cli.drv
  /nix/store/wv0s9a72wkhr3p3f311nricdfasslnxp-closure-info.drv
  /nix/store/yni4hfw0mczxk0lcsn5fgl0z1rl06vyh-check-vars.drv
error: path '/nix/store/plk7l45kicklld7d1c9vx9170wfvv4ga-check-vars' is not valid
error: Cannot build '/nix/store/yni4hfw0mczxk0lcsn5fgl0z1rl06vyh-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/plk7l45kicklld7d1c9vx9170wfvv4ga-check-vars