commit:     671b6f3393b1b5849b3670334a2881f29169975e
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Thu Oct  1 13:40:31 2020 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Thu Oct  1 14:04:33 2020 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=671b6f33

dev-lang/python-exec: Remove python2 symlink

Stop installing python2* symlinks.  We have only one Python 2
interpreter left, so let's move it there.  As a bonus, people without
Python 2.7 installed will not have it at all.

Closes: https://bugs.gentoo.org/745975
Signed-off-by: Michał Górny <mgorny <AT> gentoo.org>

 dev-lang/python-exec/python-exec-2.4.6-r2.ebuild | 126 +++++++++++++++++++++++
 1 file changed, 126 insertions(+)

diff --git a/dev-lang/python-exec/python-exec-2.4.6-r2.ebuild 
b/dev-lang/python-exec/python-exec-2.4.6-r2.ebuild
new file mode 100644
index 00000000000..a5edfb3d622
--- /dev/null
+++ b/dev-lang/python-exec/python-exec-2.4.6-r2.ebuild
@@ -0,0 +1,126 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit python-utils-r1
+
+DESCRIPTION="Python script wrapper"
+HOMEPAGE="https://github.com/mgorny/python-exec/";
+SRC_URI="https://github.com/mgorny/python-exec/releases/download/v${PV}/${P}.tar.bz2";
+
+LICENSE="BSD-2"
+SLOT="2"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv 
~s390 ~sparc ~x86 ~ppc-aix ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos 
~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris 
~x86-solaris"
+# Internal Python project hack.  Do not copy it.  Ever.
+IUSE="${_PYTHON_ALL_IMPLS[@]/#/python_targets_}"
+
+RDEPEND="!<=dev-lang/python-2.7.18-r3:2.7"
+
+src_configure() {
+       local pyimpls=() i EPYTHON
+       for i in "${_PYTHON_ALL_IMPLS[@]}"; do
+               if use "python_targets_${i}"; then
+                       python_export "${i}" EPYTHON
+                       pyimpls+=( "${EPYTHON}" )
+               fi
+       done
+
+       local myconf=(
+               
--with-fallback-path="${EPREFIX}/usr/local/sbin:${EPREFIX}/usr/local/bin:${EPREFIX}/usr/sbin:${EPREFIX}/usr/bin:${EPREFIX}/sbin:${EPREFIX}/bin"
+               --with-python-impls="${pyimpls[*]}"
+       )
+
+       econf "${myconf[@]}"
+}
+
+src_install() {
+       default
+
+       # Prepare and own the template
+       insinto /etc/python-exec
+       newins - python-exec.conf \
+               < <(sed -n -e '/^#/p' config/python-exec.conf.example)
+
+       local programs=( python python3 )
+       local scripts=( python-config python3-config 2to3 idle pydoc pyvenv )
+
+       local f
+       for f in "${programs[@]}"; do
+               # symlink the C wrapper for python to avoid shebang recursion
+               # bug #568974
+               dosym python-exec2c /usr/bin/"${f}"
+       done
+       for f in "${scripts[@]}"; do
+               # those are python scripts (except for new python-configs)
+               # so symlink them via the python wrapper
+               dosym ../lib/python-exec/python-exec2 /usr/bin/"${f}"
+       done
+}
+
+pkg_preinst() {
+       if [[ -e ${EROOT}/etc/python-exec/python-exec.conf ]]; then
+               # preserve current configuration
+               cp "${EROOT}"/etc/python-exec/python-exec.conf \
+                       "${ED}"/etc/python-exec/python-exec.conf || die
+       else
+               # preserve previous Python version preference
+               local py old_pythons=()
+               local config_base=${EROOT}/etc/env.d/python
+
+               # start with the 'global' preference (2 vs 3)
+               if [[ -f ${config_base}/config ]]; then
+                       old_pythons+=( "$(<${config_base}/config)" )
+               fi
+
+               # then try specific py3 selection
+               for py in 3; do
+                       local target=
+
+                       if [[ -f ${config_base}/python${py} ]]; then
+                               # try the newer config files
+                               target=$(<${config_base}/python${py})
+                       elif [[ -L ${EROOT}/usr/bin/python${py} ]]; then
+                               # check the older symlink format
+                               target=$(readlink 
"${EROOT}/usr/bin/python${py}")
+
+                               # check if it's actually old eselect symlink
+                               [[ ${target} == python?.? ]] || target=
+                       fi
+
+                       # add the extra target if found and != global
+                       if [[ ${target} && ${old_pythons[0]} != ${target} ]]; 
then
+                               old_pythons+=( "${target}" )
+                       fi
+               done
+
+               if [[ ${old_pythons[@]} ]]; then
+                       elog "You seem to have just upgraded into the new 
version of python-exec"
+                       elog "that uses python-exec.conf for configuration. The 
ebuild has attempted"
+                       elog "to convert your previous configuration to the new 
format, resulting"
+                       elog "in the following preferences (most preferred 
version first):"
+                       elog
+                       for py in "${old_pythons[@]}"; do
+                               elog "  ${py}"
+                       done
+                       elog
+                       elog "Those interpreters will be preferred when running 
Python scripts or"
+                       elog "calling wrapped Python executables (python, 
python2, pydoc...)."
+                       elog "If none of the preferred interpreters are 
supported, python-exec will"
+                       elog "fall back to the newest supported Python version."
+                       elog
+                       elog "Please note that due to the ambiguous character 
of the old settings,"
+                       elog "you may want to modify the preference list 
yourself. In order to do so,"
+                       elog "open the following file in your favorite editor:"
+                       elog
+                       elog "  ${EROOT}/etc/python-exec/python-exec.conf"
+                       elog
+                       elog "For more information on the new configuration 
format, please read"
+                       elog "the comment on top of the installed configuration 
file."
+
+                       local IFS=$'\n'
+                       echo "${old_pythons[*]}" \
+                               >> "${ED}"/etc/python-exec/python-exec.conf || 
die
+               fi
+       fi
+}

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