Re: Using #true and #false everywhere?

["Ludovic Courtès" <ludo@gnu.org>]

Hi,

Ricardo Wurmus <rekado@elephly.net> skribis:

> Mark H Weaver <mhw@netris.org> writes:
>
>> Ricardo Wurmus <rekado@elephly.net> writes:
>>
>>> I think it’s very ugly that we still need to end phases with #T, even
>>> though build systems don’t care any more.  The only thing that aborts a
>>> build phase now is an exception.
>>
>> I would be glad if this were the case, but I believe you're mistaken.
>> On both master and core-updates, in (guix build gnu-build-system), the
>> 'gnu-build' procedure iterates over the phases using 'every', and
>> procedure passed to 'every' ends by returning 'result', which is the
>> value that the phase returned.  Am I missing something?
>
> No, you are correct.  My meaning was more about intent; in the early
> days of the change to INVOKE I’ve seen a couple of warnings telling me
> that a phase returned #<unspecified> or #F, but that didn’t result in
> aborting the build.  We have decided a long time ago that the only way
> to exit a build should be through an exception, so I think it’s time to
> update the last few build system remnants of the Boolean assumption (on
> core-updates).

I agree.  That means replacing ‘every’ with ‘for-each’.

Ludo’.