[dev-lang/python-exec] temp fork ebuild to fix Entropy bug (see ebuild)

@@ -22,12 +22,18 @@ IUSE=""

 # eselect-python because of /usr/bin/python* collisions and new config
 # python versions because of missing $scriptdir/python* symlinks
+#
+# Sabayon workaround for Entropy <=309 systems, see:
+# https://github.com/Sabayon/entropy/commit/2d65d5b7bf9aa3806721ce337b0a08925cd44fbf
+# Keep in our overlay until mid-2018.
+# Sabayon only supports Python 2.7 and 3.5.
+#
 RDEPEND="
-	!<app-eselect/eselect-python-20160206
-	!<dev-lang/python-2.7.10-r4:2.7
+	>=app-eselect/eselect-python-20160206
+	>=dev-lang/python-2.7.10-r4:2.7
+	>=dev-lang/python-3.5.0-r3:3.5
 	!<dev-lang/python-3.3.5-r4:3.3
-	!<dev-lang/python-3.4.3-r4:3.4
-	!<dev-lang/python-3.5.0-r3:3.5"
+	!<dev-lang/python-3.4.3-r4:3.4"

 src_configure() {
 	local pyimpls=() i EPYTHON

dev-lang/python-exec/Manifest

@@ -0,0 +1 @@
+DIST python-exec-2.4.5.tar.bz2 87137 SHA256 8649def42af569cc65598da6af49e554351dc138ccc8a96198c2a425494a8559 SHA512 8c1a520c565afa775cad0e8b88248b688814664e588f683fc2b2c039ee0494b168ebd3cd1042b8b7fe2583f287cf55b22ea0585bfb43efe2f8450d809cde0b21 WHIRLPOOL 5de79c34c31eee131799524a8ad19262a1455d59ee4db0cc99468820fe142c864f10999834734b70a6d6868ead97e2d389e83dc1679248e862b02b332a177954

dev-lang/python-exec/python-exec-2.4.5.ebuild

@@ -0,0 +1,140 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+# Kids, don't do this at home!
+inherit python-utils-r1
+PYTHON_COMPAT=( "${_PYTHON_ALL_IMPLS[@]}" )
+
+# Inherited purely to have PYTHON_TARGET flags which will satisfy USE
+# dependencies and trigger necessary rebuilds.
+inherit python-r1
+
+DESCRIPTION="Python script wrapper"
+HOMEPAGE="https://github.com/mgorny/python-exec/"
+SRC_URI="https://github.com/mgorny/${PN}/releases/download/${P}/${P}.tar.bz2"
+
+LICENSE="BSD-2"
+SLOT="2"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~ppc-aix ~x64-cygwin ~amd64-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE=""
+
+# eselect-python because of /usr/bin/python* collisions and new config
+# python versions because of missing $scriptdir/python* symlinks
+#
+# Sabayon workaround for Entropy <=309 systems, see:
+# https://github.com/Sabayon/entropy/commit/2d65d5b7bf9aa3806721ce337b0a08925cd44fbf
+# Keep in our overlay until mid-2018.
+# Sabayon only supports Python 2.7 and 3.5.
+#
+RDEPEND="
+	>=app-eselect/eselect-python-20160206
+	>=dev-lang/python-2.7.10-r4:2.7
+	>=dev-lang/python-3.5.0-r3:3.5
+	!<dev-lang/python-3.3.5-r4:3.3
+	!<dev-lang/python-3.4.3-r4:3.4"
+
+src_configure() {
+	local pyimpls=() i EPYTHON
+	for i in "${PYTHON_COMPAT[@]}"; do
+		python_export "${i}" EPYTHON
+		pyimpls+=( "${EPYTHON}" )
+	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
+	sed -n -e '/^#/p' config/python-exec.conf.example \
+		> "${T}"/python-exec.conf || die
+	insinto /etc/python-exec
+	doins "${T}"/python-exec.conf
+
+	local f
+	for f in python{,2,3}; do
+		# symlink the C wrapper for python to avoid shebang recursion
+		# bug #568974
+		dosym python-exec2c /usr/bin/"${f}"
+	done
+	for f in python{,2,3}-config 2to3 idle pydoc pyvenv; do
+		# those are python scripts (except for new python-configs)
+		# so symlink them via the python wrapper
+		dosym ../lib/python-exec/python-exec2 /usr/bin/"${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
+}