these 3 derivations will be built:
  /nix/store/bl4dsljs688mx5hb2m8vpvnpmrgi3xx1-closure-info.drv
  /nix/store/bxs4zvw5ci8apzwqg31icbkc4jkigqlb-clan-cli.drv
  /nix/store/kwcrf418rsk570fbg3y3plg2qwfq59rx-check-vars.drv
error: path '/nix/store/r1as66qw4gvqjinzdddfzmqh1l7h3292-check-vars' is not valid
error: Cannot build '/nix/store/kwcrf418rsk570fbg3y3plg2qwfq59rx-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/r1as66qw4gvqjinzdddfzmqh1l7h3292-check-vars