Re: [gentoo-user] Re: Building packages in different prefix without rebuilding system packages

[François-Xavier Carton]

On Fri, May 15, 2020 at 12:53:16PM +0200, Michael Haubenwallner wrote:
> Hi François-Xavier,
>
> What you're after is known as "Prefix/Stack", where you have some "base"
> Prefix, which's portage does manage packages in another - stacked - Prefix.
>
> While this does work already with "Prefix/Guest" as base Prefix, there is no
> technical reason to not work with "Prefix/Standalone" or even "Gentoo Linux"
> as the base Prefix.  The only problem maybe is that "Prefix/Guest" does use
> a portage version with additional patches.
>
> But still, you can get an idea about how this works, using "Prefix/Guest":
>
>  $ docker run -t -i gentooprefix/prefix-guest-64bit-fedora -c /bin/bash
>
> At the docker prompt:
>
> Enter the Guest Prefix preinstalled to /tmp/gentoo:
>  $ /tmp/gentoo/startprefix
>
> Set up your stacked Prefix:
>  $ prefix-stack-setup --eprefix=$HOME/stack --profile=/tmp/gentoo/etc/portage/make.profile
> Note that "~/stack" will not work here, bash refuses to resolve '~' after '='.
>
> Leave the Guest Prefix:
>  $ exit
>
> Enter your just created stacked Prefix:
>  $ ~/stack/startprefix
>
> Emerge your package, for example:
>  $ emerge sys-libs/zlib
>
> Have fun!
>
> HTH,
> /haubi/
>

Thanks, this looks great! I'll play with it and see how it works :)