Hi François-Xavier, On 5/14/20 7:02 AM, François-Xavier Carton wrote: > Hi, > > Is there a way of installing packages in a different prefix while still > using system packages? I've tried setting EPREFIX, however doing that > will install all dependencies in the prefix, even if there are already > installed in the system. > > I was hoping to install some packages in user directories, but I also > don't want to duplicate the packages installed globally. For example, > most packages eventually depend on gcc, which I definitely don't want to > compile twice. So ideally, only dependencies that are not installed > globally should be pulled in. > > I was not able to find a way of doing that, but I feel like it shouldn't > be too hard, because EPREFIX almost does what I want. Does someone know > if it's possible without too much tweaking?
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/
