From: Pierre Neidhardt <mail@ambrevar.xyz>
To: "Nicolò Balzarotti" <anothersms@gmail.com>,
ison <ison@airmail.cc>, zimoun <zimon.toutoune@gmail.com>
Cc: guix-devel@gnu.org
Subject: Re: Parameterized packages
Date: Fri, 17 Jan 2020 17:41:15 +0100 [thread overview]
Message-ID: <877e1q11ec.fsf@ambrevar.xyz> (raw)
In-Reply-To: <875zhbvzfz.fsf@guixSD.i-did-not-set--mail-host-address--so-tickle-me>
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Hi Nicolò,
Yes, you are exactly right.
I didn't know Nix had it, that's great to hear!
Would you happen to know where those USE flags are implemented?
> Taking handbrake[1] recipe as an example: there's the useGtk flag that
> can be passed to the package definition, and that affects build
> options. Since in guix dependencies build inputs are specified inside
> the package definition, propagating those flags should be easy. If we
> standardize on flags names (don't have "-X", "noX", "disable-x"...), it
> should be easy to incrementally add flags support to all package
> dependencies. I imagine (with an invalid syntax probably) something
> like:
>
> (inputs
> `(,(unless (member build-flags 'no-x) ("libx11" libx11))
> ; this package always need x, don't pass flags
> ("input" ,input "out" (filter (lambda (x) (not (eq? x 'no-x))) build-flags))
> ("other-input" ,input))) ; flags are passed implicitly here?
Some questions arise though:
- What about passing parameters to implicit dependencies, e.g. those of
the build system?
- Consider the following case: With package A depending on B depending
on C, to get parameter X on A we need to enable X on C.
I guess the workaround is to include "C with parameter X" as an
explicit input of A. Hmm...
--
Pierre Neidhardt
https://ambrevar.xyz/
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next prev parent reply other threads:[~2020-01-17 16:41 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-14 11:54 Parameterized packages Ludovic Courtès
2019-05-14 15:17 ` Tobias Geerinckx-Rice
2019-05-17 14:23 ` Pierre Neidhardt
2019-05-17 18:15 ` Mark H Weaver
2019-07-19 5:41 ` Chris Marusich
2019-07-19 20:29 ` ison
2020-01-02 19:23 ` Pierre Neidhardt
2020-01-09 11:10 ` Pierre Neidhardt
2020-01-09 23:13 ` Marius Bakke
2020-01-10 12:29 ` Pierre Neidhardt
2020-01-10 16:19 ` Ludovic Courtès
2020-01-11 11:31 ` Pierre Neidhardt
2020-01-14 15:05 ` zimoun
2020-01-15 9:40 ` Pierre Neidhardt
2020-01-15 11:30 ` zimoun
2020-01-15 11:51 ` Pierre Neidhardt
2020-01-15 13:54 ` zimoun
2020-01-16 19:06 ` ison
2020-01-16 20:55 ` Ricardo Wurmus
2020-01-17 16:34 ` Pierre Neidhardt
2020-01-17 9:15 ` L p R n d n
2020-01-17 16:46 ` Pierre Neidhardt
2020-01-17 15:53 ` zimoun
2020-01-17 16:56 ` Pierre Neidhardt
2020-01-20 14:34 ` zimoun
2020-01-21 10:56 ` Build systems and implicit inputs Ludovic Courtès
2020-01-21 12:24 ` zimoun
2020-01-21 13:07 ` Pierre Neidhardt
2020-01-21 18:02 ` zimoun
2020-01-19 20:34 ` Parameterized packages Ludovic Courtès
2020-01-20 9:08 ` Pierre Neidhardt
2020-01-20 14:50 ` zimoun
2020-01-20 18:57 ` Pierre Neidhardt
2020-01-20 19:07 ` Pierre Neidhardt
2020-01-20 22:57 ` ison
2020-01-21 10:09 ` Pierre Neidhardt
2020-01-21 10:49 ` Ludovic Courtès
2020-01-21 12:15 ` zimoun
2020-01-21 13:13 ` Pierre Neidhardt
2020-01-21 19:04 ` zimoun
2020-01-22 9:54 ` Pierre Neidhardt
2020-01-22 12:23 ` zimoun
2020-01-24 21:56 ` ison
2020-01-26 19:35 ` zimoun
2020-01-27 10:13 ` Pierre Neidhardt
2020-01-27 11:23 ` zimoun
2020-01-27 11:50 ` Pierre Neidhardt
2020-01-27 12:34 ` zimoun
2020-01-27 10:04 ` Pierre Neidhardt
2020-01-25 18:52 ` John Soo
2020-01-27 10:17 ` Pierre Neidhardt
2020-01-20 14:12 ` zimoun
2020-01-17 16:31 ` Pierre Neidhardt
[not found] ` <875zhbvzfz.fsf@guixSD.i-did-not-set--mail-host-address--so-tickle-me>
2020-01-17 16:41 ` Pierre Neidhardt [this message]
2020-01-19 20:30 ` Ludovic Courtès
2020-01-15 11:43 ` Pierre Neidhardt
2020-01-15 11:44 ` Pierre Neidhardt
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