| 1 |
* Florian Philipp <lists@×××××××××××.net> wrote: |
| 2 |
|
| 3 |
> However, what you want can still be done without touching the ebuilds |
| 4 |
> because it would really just be an alias for `emerge --one-shot |
| 5 |
> <new_alternative> && emerge --depclean <old_alternative> && |
| 6 |
> revdep-rebuild` (in the easiest, non-blocking case). |
| 7 |
|
| 8 |
No, this isn't enough. I want an stable method which never leaves |
| 9 |
the system in an inconsistent state. When revdep-rebuild is required, |
| 10 |
there's normally a period of time where some installed packages are |
| 11 |
broken (okay, preserved-libs makes it better), exactly what I never |
| 12 |
want on a productive system. |
| 13 |
|
| 14 |
> I personally wouldn't want to automate this. The problem is that |
| 15 |
> different virtuals need different switching strategies. Converting from |
| 16 |
> jpeg to jpeg-turbo is relatively straight-forward. Switching between |
| 17 |
> httpd-basic implementations, on the other hand, needs manual work to |
| 18 |
> carry over config files and such. |
| 19 |
|
| 20 |
I didn't intend to do this fully automatic, for all virtuals. |
| 21 |
Just a bunch of special ones which just handle the scenarios of |
| 22 |
exchanging libraries (also on different/incompatible ABIs). |
| 23 |
|
| 24 |
> Maybe it would be a better idea to teach emerge to warn the user when a |
| 25 |
> default virtual implementation is about to be installed and show the |
| 26 |
> different alternatives. Similarly emerge --sync or eix-sync could inform |
| 27 |
> the user when a new alternative package for an already installed virtual |
| 28 |
> is available. |
| 29 |
|
| 30 |
Indeed, that would be a good feature. |
| 31 |
|
| 32 |
> Isn't that problem resolved in portage-2.2 by keeping the old library |
| 33 |
> file around until all packages have been re-emerged? |
| 34 |
|
| 35 |
The preserve-libs stuff ? I'm not sure how it actually works under the |
| 36 |
hood, but as far as I can see it, it's just done for certain critical |
| 37 |
libs yet (eg. openssl), and the package manager doesn't know much of it, |
| 38 |
just keeps certain files around. So manual revdep-rebuild runs and |
| 39 |
removals of old libs is still required. |
| 40 |
|
| 41 |
|
| 42 |
cu |
| 43 |
-- |
| 44 |
---------------------------------------------------------------------- |
| 45 |
Enrico Weigelt, metux IT service -- http://www.metux.de/ |
| 46 |
|
| 47 |
phone: +49 36207 519931 email: weigelt@×××××.de |
| 48 |
mobile: +49 151 27565287 icq: 210169427 skype: nekrad666 |
| 49 |
---------------------------------------------------------------------- |
| 50 |
Embedded-Linux / Portierung / Opensource-QM / Verteilte Systeme |
| 51 |
---------------------------------------------------------------------- |
Archives