Subject: Re: [PATCH] build: utils: Add‘list-when’ macro.

From: Liliana Marie Prikler <[email-masked]>
Date: Fri, 17 Sep 2021 19:55:52 +0200

Am Freitag, den 17.09.2021, 10:26 +0200 schrieb Xinglu Chen:
> * guix/build/utils.scm (list-when): New syntax
> * tests/build-utils.scm ("list-when: expr1 is non-#f", list-when:
> expr1 is #f"):
>   Test it.
> * guix.texi (Build Utilities): Document it.
> ---
> Changes since v1:
> 
> * Rename ‘optional’ to ‘list-when’.
> 
> * Make
> 
>     (list-when test consequent ...)
> 
>   equivalent to
> 
>     (if tests
>         (list consequent ...)
>         '())
LGTM, but let's wait on more opinions.  IIRC, changing (guix build)
causes a world rebuild, no?  So this patch might go to core-updates
first.