these 4 derivations will be built:
  /nix/store/2df2c42qv1m01w4yvbs3f5ahmbmsxdc1-clan-cli-source.drv
  /nix/store/h6jfb1kyrkx3f7wjmdndvj06ns9q6kgv-clan-cli.drv
  /nix/store/ic5xcmq5qpj3pz3xarkdf76kqavg052k-closure-info.drv
  /nix/store/6mbrmrn90kf4i610061gl55ik1x9sdyr-check-vars.drv
error: path '/nix/store/4nsqfwr174z8xr9hvfj4pvq5chj21ivl-check-vars' is not valid
error: Cannot build '/nix/store/6mbrmrn90kf4i610061gl55ik1x9sdyr-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/4nsqfwr174z8xr9hvfj4pvq5chj21ivl-check-vars