On 08-09-2022 09:59, zimoun wrote:
> We could add a lint checker.  Is it a “good” idea?
We already have one, 'check-license'.
> Because lint is not always applied, a check should be done when running
> ’make’ or a special target.  Is it a “good” idea?

I suppose it is a possibility, but it adds a few seconds to every 'make':

time ./pre-inst-env guix lint --checkers=license
make  all-recursive  [...]
gnu/packages/qt.scm:1373:13: qtshadertools@6.3.1: invalid license field
gnu/packages/tex.scm:11816:2: texlive-setspace@59745: invalid

real    0m1,492s
user    0m3,331s
sys    0m0,214s

As such, here's an alternative proposal: instead of checking it at 
compile-time
(which is currently impossible), let's check them at runtime, with a 
field sanitizer.

Given that, unless I'm mistaken, build-aux/compile-all.scm loads every Guix
module anyway, and given that 'license' isn't thunked or delayed, 'the 
runtime
check' would also a compile-time check.

(Performance impact on "guix ..." commands would need to be checked.)

Alternatively, some error checking could be added to the website code, 
to indicate
which package and which is wrong.  Or maybe the website code can run the 
'license'
linter first.

Greetings,
Maxime.