these 4 derivations will be built:
  /nix/store/1pa6xni405q0i5a9fr0ciqm8kc8f17gr-clan-cli-source.drv
  /nix/store/8jpazyq1bdhl8l7rm7v3i9py5ay47inb-clan-cli.drv
  /nix/store/k8isy0008pln9gfndwsnwkga79zsrirr-closure-info.drv
  /nix/store/sa8pvp45hn6liaxparbml7kqdysksp35-check-vars.drv
error: path '/nix/store/i8mr93dqs08laz6qc8kjr71n45a721w9-check-vars' is not valid
error: Cannot build '/nix/store/sa8pvp45hn6liaxparbml7kqdysksp35-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/i8mr93dqs08laz6qc8kjr71n45a721w9-check-vars