these 5 derivations will be built:
  /nix/store/0k2pmqwr5rfckmx1kl7wzn5kdkr34zjr-clan-runtime.drv
  /nix/store/l22abazb7d4aahl05yh6xw6nl3mqx1wb-clan-cli-source.drv
  /nix/store/daxxbdj5lirhgsyfrm6f7cnv9nckc5wv-clan-cli.drv
  /nix/store/j1alinbi8n9a4zgb2m642vwx6smhzpj8-closure-info.drv
  /nix/store/gaxfg1dazbn5v2qkfg28hspxlb5wmwcg-check-vars.drv
error: path '/nix/store/z2jy6s2hvzb4rbs1py2aij7d5ilpqjxq-check-vars' is not valid
error: Cannot build '/nix/store/gaxfg1dazbn5v2qkfg28hspxlb5wmwcg-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/z2jy6s2hvzb4rbs1py2aij7d5ilpqjxq-check-vars