these 4 derivations will be built:
  /nix/store/yg68ycnnqyh3nr6di2sj7142ai4qk3lh-clan-cli-source.drv
  /nix/store/59lk2l4if9hagdz3myzpmd29midqwcrb-clan-cli.drv
  /nix/store/772j8alxy1s36kmda5xn9cbcljd0kpw2-closure-info.drv
  /nix/store/7hzhkfs097r5hbh4c6c5z7mqky3vwq1l-check-vars.drv
error: path '/nix/store/30l42qbpqn14y2zigbcshi3y0yavp1vf-check-vars' is not valid
error: Cannot build '/nix/store/7hzhkfs097r5hbh4c6c5z7mqky3vwq1l-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/30l42qbpqn14y2zigbcshi3y0yavp1vf-check-vars