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McLink
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 Posted: Sat Oct 11, 2008 3:21 pm Post subject: [idea] package.overlays |
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I know the issue itself has been raised before, but I'm not sure if anyone has ever posted a possible solution. The issue: if an overlay has the same version of a package as the main tree, a normal "emerge =package-version" will attempt to merge the version from the overlay. This behaviour, however, isn't always favourable.
My idea for improvement: since GLEP 42 forces overlays to include a profiles/repo_name, it is now possible to effectively distinguish between overlays. I propose the introduction of a new file to /etc/portage - namely, package.overlays. It will take a syntax similar to package.use, but specifying overlay names instead of USE-flags. By using -[overlay-name], one can prevent the given package atom from being merged from that overlay. -* would block all overlays as well as the main tree (somewhat the same effect as adding the atom to package.mask). Using an overlay name without a "-" will override -* and allow one to merge from that overlay specifically.
For example, suppose the package =foo/bar-42.0 exists in the main tree and one or more overlays, but you only want to merge it from the main tree, you could add this to /etc/portage/package.overlays: | Code: | | =foo/bar-42.0 -* gentoo |
...Or if you specifically do NOT want to merge it from the overlay "quux", you could do this: | Code: | | =foo/bar-42.0 -quux |
To block all versions of foo/bar not in the overlays "voom" or "ponies": | Code: | | foo/bar -* voom ponies |
...and so on.
Comments welcome  .
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tanderson
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Joined: 11 Apr 2007
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| Posted: Sat Oct 11, 2008 4:52 pm Post subject: |
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With Paludis you can already do that. You do it with package.mask and package.unmask using things like:
foo/bar::gentoo
foo/bar::vroom
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McLink
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| Posted: Sat Oct 11, 2008 4:57 pm Post subject: |
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Hrmmh, Paludis. Frankly, I'd prefer to stick with Portage, though it's good to see it's at least possible. Do you know if there are any plans to implement it in Portage?
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tanderson
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| Posted: Sat Oct 11, 2008 8:14 pm Post subject: |
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| Sir Link wrote: | | Hrmmh, Paludis. Frankly, I'd prefer to stick with Portage, though it's good to see it's at least possible. Do you know if there are any plans to implement it in Portage? |
I've not heard of any. I believe, but am not sure, that this would require portage to have repository support, which it doesn't currently have. A few other features require it. I'm going to talk to Zac, the portage dev, about it.
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McLink
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| Posted: Sat Oct 11, 2008 8:16 pm Post subject: |
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| gentoofan23 wrote: | | I've not heard of any. I believe, but am not sure, that this would require portage to have repository support, which it doesn't currently have. A few other features require it. I'm going to talk to Zac, the portage dev, about it. |
Sweet. Thanks!
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Naib
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| Posted: Sat Oct 11, 2008 8:19 pm Post subject: |
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This is something I have wanted for quite some time from portage, and the primary reason I have trimmed down my overlays I use (and the moment an overlay starts adding extra stuff I fork the overlay).
If I could set a priority that would be great
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tanderson
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| Posted: Sat Oct 11, 2008 8:23 pm Post subject: |
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Ok, I talked to Zac, and he says it won't happen until portage-2.2 final is out(he says that'll take about a month). After that, it'll be his top priority. To quote(I'm tanderson):
| Quote: | 16:14 < tanderson> zmedico: ping
16:14 < zmedico> pong
16:15 < tanderson> how close are we to repository support? I just ran along another user asking for something that would be provided by repository support
16:16 < zmedico> won't happen until after 2.2 final since we need to get that stabilized asap
16:16 < tanderson> right.
16:16 < zmedico> 2.2 final is expected in about 1 month or so
16:17 < zmedico> repository stuff is high priority though
16:17 < zmedico> that is my top priority after 2.2. final
16:17 < tanderson> ok, that's good to know. I'll let the user know
16:17 < zmedico> thanks
16:19 < tanderson> just to make sure, are you going to use '::' in atoms for repositories?
16:19 < leio-dl> zmedico: aww, no 2.1.5 or newer for automatic blocker handling for two more months 
16:20 < zmedico> tanderson: yeah, probably
16:20 < tanderson> k, ta
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