On 11/30/10 03:24, Zac Medico wrote:
> Yes, hopefully something like this will do it:
>
> pkg_preinst() {
> main_active_python=$(eselect python show)
> }
>
> pkg_postinst() {
> if [[ -n $main_active_python &&
> $main_active_python != $(eselect python show) ]] ; then
> einfo "restoring active python interpreter"
> eselect python set "$main_active_python"
> fi
> }
Intersting approach.
My debugging ebuild (attached) confirms a fitting order of invocations:
# sudo EMERGE_DEFAULT_OPTS= emerge -1 =virtual/debug-2.7.1 \
| fgrep STAGE
* STAGE pkg_setup (slot 2.7, version 2.7.1)
* STAGE src_unpack (slot 2.7, version 2.7.1)
* STAGE src_prepare (slot 2.7, version 2.7.1)
* STAGE src_configure (slot 2.7, version 2.7.1)
* STAGE src_compile (slot 2.7, version 2.7.1)
* STAGE src_install (slot 2.7, version 2.7.1)
* STAGE pkg_preinst (slot 2.7, version 2.7.1)
* STAGE pkg_prerm (version 2.7, slot 2.7) <----
* STAGE pkg_postrm (version 2.7, slot 2.7) <----
* STAGE pkg_postinst (slot 2.7, version 2.7.1)
Shall we give that approach a try?
One case it doesn't seem to catch though is when you just run
emerge -C dev-lang/python:X.Y
on a machine where Python X.Y was installed with eselect_python_update()
still in place. Correct?
Sebastian
# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
EAPI="2"
inherit versionator
SLOT=$(get_version_component_range 1-2)
KEYWORDS="amd64"
for stage in src_{unpack,prepare,configure,compile,install}
pkg_{config,setup,{pre,post}{inst,rm}} ; do
eval "${stage}"'() { ewarn "STAGE ${FUNCNAME} (slot ${SLOT}, version
${PV})" ; }'
done
