these 4 derivations will be built:
  /nix/store/5igl5m9k82wlgxpdwifljh0ni5i5y1di-clan-cli-source.drv
  /nix/store/7crbl9b8zxwy4jbwl2n2yrv1vhv8qzaf-closure-info.drv
  /nix/store/n67nmylaaqv8wb58brdn525s8p57pbgc-clan-cli.drv
  /nix/store/hvrgiffacrxljz59p25dkr54wcimz2ji-check-vars.drv
error: path '/nix/store/3j38xxx3j0d1szvz4l0dch37xqy45a22-check-vars' is not valid
error: Cannot build '/nix/store/hvrgiffacrxljz59p25dkr54wcimz2ji-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/3j38xxx3j0d1szvz4l0dch37xqy45a22-check-vars