[arch-general] lib -> usr/lib

C Anthony Risinger anthony at xtfx.me
Thu Jul 26 12:00:20 EDT 2012

On Thu, Jul 26, 2012 at 6:03 AM, Tom Gundersen <teg at jklm.no> wrote:
> On Thu, Jul 26, 2012 at 10:33 AM, C Anthony Risinger <anthony at xtfx.me> wrote:
>> i've got nothing to back this up, but i'm guessing this one is going
>> to be a little trickier ... mainly because there are multiple packages
>> that are *expected* to exist in /bin.  `bash` (sh) and `coreutils` are
>> the two major ones that come to mind.
>> i expect pacman does not fork out to external processes, and can
>> handle the switch itself, but it's not as easy as the incremental lib
>> -> usr/lib update (which affects nothing) ... i expect there will be a
>> final switcharoo at the end where 2+ packages must all be moved in one
>> fell swoop.
>> Tom? others? i too am curious of the progress or experiences thus far.
> This was the original proposal:
> <http://mailman.archlinux.org/pipermail/arch-dev-public/2012-March/022625.html>.
> I just re-read it, noticing that I wrote about the move of /lib that
> it has "no real risks or downsides". Feel free to point and laugh.
> I have a patch against pacman which should make it able to deal with
> /bin/sh being in /usr/bin/, which I think is the only issue before we
> could make such a move (as pacman does call sh to run post-upgrade
> scripts and similar).
> I guess no one is in any hurry to make this move though, people
> probably want to catch their breath after the /lib move ;-)

heh, yeah i'm sure you're right about that :-)

this might be slightly hacky, but what if packages were moved one at a
time, and each time the `filesystem` package grew symlinks from
`/bin/{some-binary}` -> `/usr/bin/{some-binary}`? then, when /bin has
nothing but symlinks, you can upgrade the filesystem package, dropping
all the link and replacing `/bin` with symlinks to `/usr/bin`.

it would be a little ugly, with filesystem absobing some 200+ links,
but nothing work break in the interim (i think ;-).


C Anthony

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