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From: Mike Gilbert <floppym@gentoo.org>
Date: Fri, 20 Dec 2019 11:19:22 -0500
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Subject: Re: [gentoo-dev] [EAPI 8 RFC] Install-time dependencies
To: Gentoo Dev <gentoo-dev@lists.gentoo.org>
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On Thu, Dec 19, 2019 at 2:40 PM Micha=C5=82 G=C3=B3rny <mgorny@gentoo.org> =
wrote:
>
> Hello,
>
> Here's another potential EAPI 8 feature I'd like to discuss. Please
> note that this is about *new dependency type*, so please don't hijack it
> into the big 'let's steal Exherbo syntax' debate.
>
> Bug: https://bugs.gentoo.org/660306
>
>
> The problem
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
> Right now we don't really have a clean way of specifying dependencies
> that are used during pkg_*inst (and pkg_*rm?) phases. So far RDEPEND
> was used as a 'close enough' alternative (except for a few developers
> who rejected it as 'invalid' and used DEPEND which is even more wrong).
> However, this is no longer sufficient with EAPI 7 cross support.
>
> By design, pkg_*inst phases are run in build host's environment when
> cross is used (because obviously you can't run target host executables).
> Therefore, the relevant dependencies need to be installed into CBUILD
> root, while RDEPEND is installed into CHOST root.
>
>
> The proposed solution
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
> The proposal is to add a new dependency type (codename: IDEPEND) which
> indicates dependencies used for pkg_*inst (and pkg_*rm?) phases. Those
> dependencies would be installed into CBUILD root (like BDEPEND), and
> therefore would be runnable from build host. Similarly to RDEPEND, they
> would be installed for binary package installs but not for pure binpkg
> builds (without install).
>
> Example:
>
> inherit xdg-utils
>
> IDEPEND=3D"dev-util/desktop-file-utils"
>
> pkg_postinst() {
> xdg_desktop_database_update
> }
>
>
> WDYT?
Sounds good to me.