error:
       … while evaluating a branch condition
         at «string»:25:5:
           24|     v:
           25|     if !builtins.isAttrs v || isDrv v then
             |     ^
           26|       v

       … in the left operand of the OR (||) operator
         at «string»:25:28:
           24|     v:
           25|     if !builtins.isAttrs v || isDrv v then
             |                            ^
           26|       v

       … while evaluating definitions from `/nix/store/s0fpxz3rvfip9bc50wfmwpigxiyl6nkg-source/modules/transposition.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: The option `perSystem.x86_64-linux.checks.omnigent-worker-darwin' was accessed but has no value defined. Try setting the option.