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On Sun, Jun 06, 2010 at 01:03:48AM +0200, Thomas Sachau wrote: |
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> Am 05.06.2010 20:31, schrieb Harald van Dijk: |
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> > On Sat, Jun 05, 2010 at 05:49:08PM +0200, Thomas Sachau wrote: |
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> >> If any package does inherit python or distutils eclass, then those eclasses do pull in |
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> >> "dev-lang/python", which is unversioned, so it will always pull in the latest version, in this case |
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> >> python-3*. You could change this, so it allows any major installed slot to satisfy the python |
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> >> dependency. |
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> > |
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> > A dependency on dev-lang/python *is* satisfied by any slot, any version. You've |
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> > been told so already, if I recall correctly. |
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> |
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> Every slot and every version *should* satisfy a "dev-lang/python" dependency, but currently such |
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> unspecified version dependency does automaticly pull in the latest version/slot, which in case of |
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> python does mean python-3*, even when you have e.g. python:2.6 installed. |
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Fine, I'll be as explicit as possible: not quite. I have a Python 3-free system. I created |
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a dummy ebuild that does nothing but pull in unversioned python. Let's |
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see how it behaves. |
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$ emerge -pv python |
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These are the packages that would be merged, in order: |
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|
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Calculating dependencies... done! |
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[ebuild NS ] dev-lang/python-3.1.2-r3 [2.6.5-r2] USE="gdbm ipv6 ncurses readline sqlite ssl threads tk (wide-unicode) xml -build -doc -examples -wininst" ELIBC="(-uclibc)" 9,558 kB |
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|
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$ cat test-2.0.ebuild |
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KEYWORDS="~amd64" |
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SLOT="0" |
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DEPEND="dev-lang/python" |
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|
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$ emerge -pv test |
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|
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These are the packages that would be merged, in order: |
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|
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Calculating dependencies... done! |
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[ebuild N ] test/test-2.0 0 kB [1] |
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|
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Total: 1 package (1 new), Size of downloads: 0 kB |
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Portage tree and overlays: |
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[0] /usr/portage |
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[1] /etc/portage/overlay |
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|
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Note how python 3 is *not* pulled in, despite an unversioned dependency on dev-lang/python. |
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You only get that if you tell portage to try and update dependencies as |
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well, and yes, if you do that, it's only fair that it attempts to update python. |
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