these 5 derivations will be built:
  /nix/store/20mfa41pqs7bza8rccdh037l4mw4vnrs-clan-runtime.drv
  /nix/store/h4zzacyxi36kkgjn9a9a9k7dfvjz40k2-clan-cli-source.drv
  /nix/store/l4rq68qw9d3i4ydn68gx8z684bmk3xc5-clan-cli.drv
  /nix/store/pqvn09n8ia16zkphcjls007bwp41x9fi-closure-info.drv
  /nix/store/156qxsj0gv93fwhbaycvf4404ka4qilw-check-vars.drv
error: path '/nix/store/k0rm2zh78yqwjvkrmrq62k1mqb5acf8i-check-vars' is not valid
error: Cannot build '/nix/store/156qxsj0gv93fwhbaycvf4404ka4qilw-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/k0rm2zh78yqwjvkrmrq62k1mqb5acf8i-check-vars