Re: [gentoo-dev] [PATCH 00/21] gen_usr_ldscript: migrate away from a sep-/usr by default

[Mike Frysinger]

On 31 Mar 2016 19:00, Alexis Ballier wrote:
> On Thursday, March 31, 2016 6:07:28 PM CEST, Mike Frysinger wrote:
> > On 31 Mar 2016 16:05, Alexis Ballier wrote:
> >> On Thursday, March 31, 2016 1:58:19 AM CEST, Mike Frysinger wrote:
> >>> All ebuilds that call gen_usr_ldscript today will migrate to this and
> >>> will allow people to move away from installing things into /.  For the
> >>> systems that want to have a split-/usr partition, they can turn on this
> >>> USE flag across their system.
> >>
> >> Your patchset seems to be missing some ebuilds in that regard: expat and
> >> sys-freebsd/* come to mind.
> >
> > i did not do a full migration as i got bored, but i did do enough to show
> > it in action.  the current method does not require all be converted at the
> > same time though, so it can be left up to maintainers of relevant packages
> > to do the change over themselves.
>
> i dont think anybody expects you to post tree-wide conversion patches to
> -dev ml :)
>
> but i also dont think it is a good idea to leave the toolchain-funcs
> version around, and if you want to drop it, you'll have to fill bugs to let
> ppl know, which is probably more work than adding 8 chars to an inherit
> line that can be automated

sure -- backwards compat won't be dropped until we're confident everyone
has migrated over

> >>> This also allows us to mask the flag on many targets where it doesn't
> >>> make sense (like most prefix setups) and where we don't want to support
> >>> it at all.
> >>
> >> It should be noted that, unless I missed something, the default settings
> >> will *not anymore* allow sep-usr after this patchset (sep-usr
> >> useflag will
> >> be disabled). This should be advertised more (a news item?) or simply
> >> sep-usr added to make.defaults. The latter will also enable busybox's
> >> sep-usr support.
> >
> > the patchset allows for some targets (notably Linux systems) to control
> > whether the flag is enabled.  it is turned off by default and i think
> > that's the behavior we want.  i have not forced enabled it for any target
> > but maybe the prefix/darwin guys will want to do that.
>
> not sure if this was phrased as such, but I seem to recall a council
> decision stating that separate /usr should be made easy to users unless
> this causes serious issues; thus, no, I don't think that is the behavior we
> want :)

pretty sure the decision was that it's not required to be supported.  and
regardless of that, i don't see the default behavior of being off as being
contra "easy to use".
-mike