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Hello, |
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Sometimes it is necessary for a single package to pull from multiple |
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remote repositories. One case are broken packages like glibc (where |
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two repositories have to be merged for build-time), another are git |
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submodules (which don't cooperate well with bare checkouts). |
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Thus, I'm wondering about adding support for such a feature to |
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git-2.eclass. However, I don't have any concept for it yet so I'd |
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appreciate your ideas. What needs to be thought up is not only how to |
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do it but also what to do, exactly. |
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The simpler case would be only to provide support for fetching from |
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multiple repositories in git-2, and use it for submodules internally. |
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This would already fix glibc-9999 & smart-live-rebuild cooperation but |
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the glibc ebuild would still need to do a little hackery to checkout |
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the second repository. |
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The more complete case would be to completely support multiple |
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repostories but it would require a larger eclass rewrite, to support |
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hacking more of its variables. |
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Another question is how to implement it API-wide. The main problem here |
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is that we already use multiple values for EGIT_REPO_URI to support |
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fallback URIs, and I'd prefer supporting that for the additional repos |
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as well. |
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1/ Mike suggested something like: |
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EGIT_REPO_URI=( "repo1 fallback1" "repo2 fallback2" ) |
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but IMO it hurts readability and makes the behavior a little surprising |
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(not that the fallback syntax isn't surprising already). |
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2/ Exherbo way would be doing something like: |
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EGIT_SECONDARY_REPOS='foo' |
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EGIT_foo_REPO_URI=... |
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but that would be real PITA for smart-live-rebuild, and I really hate |
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dynamically named variables. |
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3/ I'm wondering about something in-between those two, supposedly: |
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EGIT_SECONDARY_REPO_URIS=( "repo2 fallback2" ... ) |
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Still painful for s-l-r but could be implemented without |
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eclass-specific hacks as array support. Of course, if we support this |
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not only for fetching but for checkouts as well, it's likely to get |
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unreadable as well... |
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What are your ideas? |
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-- |
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Best regards, |
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Michał Górny |
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