these 5 derivations will be built:
  /nix/store/091bj61y0ndwbm5x0sa1qk1kwqw09xpd-clan-runtime.drv
  /nix/store/gm1irp1rln8cjk6lnj5mmq6pkh08gadq-closure-info.drv
  /nix/store/izs3anfasmanr11jr0napzb88p6ibwd4-clan-cli-source.drv
  /nix/store/jiq4q5xlrj6xmka6nh8pnih4bmjqpvh5-clan-cli.drv
  /nix/store/2yfllnv0az2hivw28bmrz477iplyn67g-check-vars.drv
error: path '/nix/store/h1n26ynv0fffk3s6x8xvh7cb5rnafg74-check-vars' is not valid
error: Cannot build '/nix/store/2yfllnv0az2hivw28bmrz477iplyn67g-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/h1n26ynv0fffk3s6x8xvh7cb5rnafg74-check-vars