these 4 derivations will be built:
  /nix/store/08m237w7markw2b3d6wlx3qq8x649a1r-closure-info.drv
  /nix/store/wq7gqyx3xiykxb87zc8hwlc7asflllwf-clan-cli-source.drv
  /nix/store/s3zvj60jnnin9057mv7g2353sqmnyn84-clan-cli.drv
  /nix/store/j3n48wpcajz3pj962y7qv371sifnz45y-check-vars.drv
error: path '/nix/store/lfs0kzg1npjkh64rc9k8s6mwy9wnvr14-check-vars' is not valid
error: Cannot build '/nix/store/j3n48wpcajz3pj962y7qv371sifnz45y-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/lfs0kzg1npjkh64rc9k8s6mwy9wnvr14-check-vars