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Ciaran McCreesh wrote: |
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> On Fri, 15 May 2009 14:43:29 -0500 |
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> William Hubbs <williamh@g.o> wrote: |
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>> On Thu, May 14, 2009 at 10:53:37PM +0100, Ciaran McCreesh wrote: |
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>>> It can't, because it doesn't know the EAPI until it's sourced the |
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>>> thing using bash. Using things like += in global scope will break |
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>>> older bash versions to the point that they can't reliably extract |
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>>> EAPI. |
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>> |
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>> I just figured out a line in bash that will get an EAPI without |
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>> sourcing the ebuild: |
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>> |
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>> eval `grep '^EAPI=' ebuildfile | head -n 1` |
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>> |
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>> will set EAPI in the current scope to EAPI in the ebuild, without |
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>> sourcing it, unless the issue with something like this would be its |
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>> use of grep and head, but these are both in the system set, so unless |
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>> you don't want to depend on the system set, I don't know what the |
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>> objection would be. |
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> |
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> The objection is that your code doesn't work. It's entirely legal to |
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> do, say: |
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> |
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> export EAPI="1" |
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> |
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> or: |
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> |
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> inherit versionator |
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> |
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> if version_is_at_least 2 ; then |
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> EAPI="2" |
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> else |
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> EAPI="0" |
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> fi |
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> |
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> Besides, if we were able to do what your code does, we'd just code it |
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> natively, not use external programs. |
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How is it possible to do these things encoded in the filename? |
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Marijn |
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- -- |
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If you cannot read my mind, then listen to what I say. |
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|
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Marijn Schouten (hkBst), Gentoo Lisp project, Gentoo ML |
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<http://www.gentoo.org/proj/en/lisp/>, #gentoo-{lisp,ml} on FreeNode |
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=bI9e |
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