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Rich Freeman posted on Tue, 22 Jul 2014 21:15:01 -0400 as excerpted: |
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> On Tue, Jul 22, 2014 at 4:06 PM, Martin Vaeth <martin@×××××.de> wrote: |
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>> ...but by introducing all the additional complications Ian has |
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>> mentioned. More precisely: What happens if new dependencies are |
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>> introduced which are not satisfied? |
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>> One has to face it: Portage must not just silently "update" the |
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>> database and thus silently produce a /var/db which does not satisfy its |
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>> own dependencies... |
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> |
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> While this is problematic, I think portage actually can handle this (but |
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> I haven't tested this recently). Portage already allows you to clean a |
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> package without its reverse deps leading to a system in exactly the |
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> state you describe. I believe portage will just try to bring the |
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> package back at the next emerge @world (or any other set containing the |
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> reverse dep). |
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FWIW I tested this with a number of packages just the other day while |
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doing an initial test-build of qt:5 and kde:5 from the relevant |
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overlays. Various kde-workspace5/plasma5 packages can't coexist with the |
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kde:4 versions, but I didn't want to remove the kde:4 revdeps or set- |
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elements from my installed sets until I was sure the kde:5 versions |
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worked fine. |
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Apparently the kwin:5 version I was testing doesn't like my radeon turks |
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(hd6670 IIRC) hardware their current v3.16-pre kernel drm drivers as once |
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I had the whole setup installed and tried to startx with it, kwin ended |
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up in a segfault/respawn cycle, so my surgical unmerge of specific kde:4 |
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packages was just as well, making it relatively easy to simply emerge -k |
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@world and get back to a working system from the binpkgs, automatically |
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unmerging the kde:5 blockers on the way since I hadn't actually let |
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portage put them in @world just yet. |
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Yes, a simple emerge --deep @world pulls everything missing but needed |
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back in, so that bit of portage at least seems to be working just fine. |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman |
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