On Wed, 2009-01-14 at 16:08 -0500, Josh Boyer wrote: > On Wed, Jan 14, 2009 at 02:51:52PM -0500, seth vidal wrote: > > > >On saturday at fudcon we had a small talk (meaning there were only 4 of > >us there: Jeroen, Jeremy, James, and Me) about the future of comps and > >what we need. > > > >We came up with a fairly radical departure that will take some work to > >implement and probably won't land for F11 but it is worth discussing a > >bit now. Please read through the whole thing before jumping all over it. > > > > > >Problems we see: > >- browsing packages is a difficult problem when you have 10000+ pkgs. > >- comps has a lot of meanings and it is not obvious what they all are/do > >- conditional pkgs (which provide a way of saying "install pkgX only > > if pkgY is installed) are several colors of doom b/c they aren't a > > dependency relationship and creates clutter on systems. > >- users expect groups to be more persistent on their systems and to act > > more like pkgs (ie: yum update should update groups, too) > >- optional/default/mandatory pkgs are confusing and not useful to most > > people - the types are only useful when browsing, not when installing. > > > > > >We're still going to have a comps/groups file in the metadata but we'll > >be removing package types. If a package is a member of a group then > >that's it. It's in the group. > > > >When someone goes to install the group: 'yum groupinstall > >mygroup-of-fun' or 'yum install @mygroup-of-fun' then yum will grab the > >comps/groups file from each repo, look if the group you're requesting is > >there. If so it will create a metapkg rpm (a package containing only > >requirements) on the packages that exist in the repositories that are > >listed in that group. Then it will depsolve and install that pkg. The > >package name will be @mygroup-of-fun. The package version will be a hash > >of the contents of the package along with a timestamp. It needs to be > >timestamp-based so the version is increasing so we can 'update' these > >pkgs. > > > >We'll make sure that yum knows about @pkgs to be looked up against the > >comps file (which should be significantly smaller now). > > Bear with this question, but... > > I often find myself doing "yum install <some group>" and messing around > with that a bit. Then I typically find that I only really want 1/2 the > group or something. > > With the metapkg installed, won't I have to yum remove that in order to > remove any individual packages from in that group? If so, will yum go > into a depsolving erasure spree and try to remove the whole group > instead of just the package or two I listed? No, not if the remove-with-leaves plugin is not installed. Remember: yum install foo foo requires bar so bar is installed. yum remove foo only foo is removed. bar stays, unless you have remove-with-leaves installed. -sv -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
