these 4 derivations will be built:
  /nix/store/9v60gkj4yq17jd8n94ivx0zqi6jbc9l4-clan-cli-source.drv
  /nix/store/7ipf8crinyv91hl5ir48slp7ak9dkybb-clan-cli.drv
  /nix/store/8psrk8xh3ll3q11ixjg9apcq1m65m7i6-closure-info.drv
  /nix/store/6z9gq1jmps12sa39yhgsjng74bdgpmi2-check-vars.drv
error: path '/nix/store/s4n8xlwxm3wh5lvgp4xky9s2km5np6vb-check-vars' is not valid
error: Cannot build '/nix/store/6z9gq1jmps12sa39yhgsjng74bdgpmi2-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/s4n8xlwxm3wh5lvgp4xky9s2km5np6vb-check-vars