these 4 derivations will be built:
  /nix/store/fp3c9q8qyyhnb377j669zc082jqhvy0g-clan-cli-source.drv
  /nix/store/hghmfhfgvpngyqcvn2gyfxxqnyabg7ny-clan-cli.drv
  /nix/store/p0pz930cfdsbswbwjp2sqxjj9x21j1l7-closure-info.drv
  /nix/store/sxy42fxn6zvvb6h1wqml7qls6f9zb3hd-check-vars.drv
error: path '/nix/store/93z4s2rdhwqji5iq8kc6ff9hdxc0hniw-check-vars' is not valid
error: Cannot build '/nix/store/sxy42fxn6zvvb6h1wqml7qls6f9zb3hd-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/93z4s2rdhwqji5iq8kc6ff9hdxc0hniw-check-vars