these 4 derivations will be built:
  /nix/store/k5g75acimkzar813cd9d68lg6psnq24r-closure-info.drv
  /nix/store/kpkxgr1iab8ql80xn8y5g11pndxvz0r1-clan-cli-source.drv
  /nix/store/vlakishfjd8v37msjmyci9p0y6l99da8-clan-cli.drv
  /nix/store/ww2095pc2n5vrk2ibh0r44fjwlak627j-check-vars.drv
error: path '/nix/store/0lc38rfbnxzbp7bswsmyhk8sqhwima6w-check-vars' is not valid
error: Cannot build '/nix/store/ww2095pc2n5vrk2ibh0r44fjwlak627j-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/0lc38rfbnxzbp7bswsmyhk8sqhwima6w-check-vars