+ ;; Default behaviour is to extract git hash to use for version
+ ;; string, here our version string is manually substituted in

You exceed maximum column here.

Use ‘./pre-inst-env guix lint PACKAGE’ before submitting to fix this
kind of errors.

+    (license license:gpl3)))

Have you checked "licenses" folder ?

Additionally, none of your sources include a license field. And yet, they are
used in cbqn/bootstrap.This is anomalous to me.