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On 30/05/12 01:01 PM, Michał Górny wrote: |
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> ... In other words, removing a pager leaves system in a broken |
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> state. AFAICS, 'eselect pager' doesn't even support a system |
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> without pager -- it just fails miserably. So the user is either |
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> forced to install any pager provider, or remove the env.d file by |
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> hand. |
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> |
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> Thus, I raise the following issues: |
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> |
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> 1) eselect modules should probably support not only switching |
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> implementations but disabling any as well. I'll open a bug for the |
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> editor module used here; |
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> |
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Also, it may make sense to have the eselect module have its own update |
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default -- ie, either unset when the current selection disappears, or |
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choose an alternative (and could even have a default heuristic choice |
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for how that alternative will be chosen). I suppose dev's might want |
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to control this per-package, but I expect that per-eselect-module |
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would be atomic enough to cover the vast majority of cases wouldn't it? |
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> 2) should all implementation providers call 'eselect ... update' |
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> in postrm()? That seems to be the most reasonable way of ensuring |
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> the system is left in working state. |
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I concur on this. |
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> 3) how about semi-official eselect modules, like eselect-sh? I |
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> don't really see all shells depending on it; should the ebuilds |
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> check whether a particular eselect module is installed first? |
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This could be done fairly easily via an inherited eclass + an |
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eselect-module-identifier variable (as with the rest of the |
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potentially required functionality above). If it's still up to the |
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package to RDEPEND on the eselect-module package directly, then the |
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eclass could fairly easily do nothing if it's not installed; otherwise |
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a variable to set required or optional would do the same (allowing |
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*DEPEND on the eselect modules could be moved to the eclass) |
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