[bug#58231] [PATCH 0/2] Checking the 'license' field of packages

[Ludovic Courtès]

Hello Guix!

We already have ‘guix lint -c license’ but that hasn’t prevented
us from occasionally having invalid licenses committed.  This patch
adds add a ‘sanitize’ option to the ‘license’ field of <package> to
detect invalid licenses early on, as zimoun suggested at:

  https://lists.gnu.org/archive/html/guix-devel/2022-09/msg00067.html

The funny part of this patch is that the license validation expands
to #t in the majority of cases, meaning that it comes without
run-time overhead (there is macro-expansion overhead, but I didn’t
measure it).  Kinda like static type checking, except that we can
only tell when a value is definitely a valid license and cannot
conclude in other cases.

Feedback welcome!

Thanks,
Ludo’.

Ludovic Courtès (2):
  licenses: Let 'license?' expand to #t in trivial cases.
  packages: Raise an exception for invalid 'license' values.

 guix/licenses.scm  | 58 +++++++++++++++++++++++++++++++++++++++-------
 guix/packages.scm  | 40 +++++++++++++++++++++++++++++++-
 tests/packages.scm |  7 ++++++
 3 files changed, 95 insertions(+), 10 deletions(-)


base-commit: d9b7982ba58fdea0934b60a81f507440a56c82ee
-- 
2.37.3