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135 lines
4.3 KiB
135 lines
4.3 KiB
# Copyright 1999-2017 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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EAPI=5
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# Kids, don't do this at home!
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inherit python-utils-r1
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PYTHON_COMPAT=( "${_PYTHON_ALL_IMPLS[@]}" )
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# Inherited purely to have PYTHON_TARGET flags which will satisfy USE
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# dependencies and trigger necessary rebuilds.
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inherit python-r1
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DESCRIPTION="Python script wrapper"
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HOMEPAGE="https://github.com/mgorny/python-exec/"
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SRC_URI="https://github.com/mgorny/${PN}/releases/download/${P}/${P}.tar.bz2"
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LICENSE="BSD-2"
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SLOT="2"
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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"
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IUSE=""
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# eselect-python because of /usr/bin/python* collisions and new config
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# python versions because of missing $scriptdir/python* symlinks
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RDEPEND="
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!<app-eselect/eselect-python-20160206
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!<dev-lang/python-2.7.10-r4:2.7
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!<dev-lang/python-3.3.5-r4:3.3
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!<dev-lang/python-3.4.3-r4:3.4
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!<dev-lang/python-3.5.0-r3:3.5"
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src_configure() {
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local pyimpls=() i EPYTHON
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for i in "${PYTHON_COMPAT[@]}"; do
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python_export "${i}" EPYTHON
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pyimpls+=( "${EPYTHON}" )
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done
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local myconf=(
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--with-fallback-path="${EPREFIX}/usr/local/sbin:${EPREFIX}/usr/local/bin:${EPREFIX}/usr/sbin:${EPREFIX}/usr/bin:${EPREFIX}/sbin:${EPREFIX}/bin"
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--with-python-impls="${pyimpls[*]}"
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)
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econf "${myconf[@]}"
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}
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src_install() {
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default
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# Prepare and own the template
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sed -n -e '/^#/p' config/python-exec.conf.example \
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> "${T}"/python-exec.conf || die
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insinto /etc/python-exec
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doins "${T}"/python-exec.conf
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local f
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for f in python{,2,3}; do
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# symlink the C wrapper for python to avoid shebang recursion
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# bug #568974
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dosym python-exec2c /usr/bin/"${f}"
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done
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for f in python{,2,3}-config 2to3 idle pydoc pyvenv; do
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# those are python scripts (except for new python-configs)
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# so symlink them via the python wrapper
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dosym ../lib/python-exec/python-exec2 /usr/bin/"${f}"
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done
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}
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pkg_preinst() {
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if [[ -e ${EROOT}etc/python-exec/python-exec.conf ]]; then
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# preserve current configuration
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cp "${EROOT}"etc/python-exec/python-exec.conf \
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"${ED}"etc/python-exec/python-exec.conf || die
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else
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# preserve previous Python version preference
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local py old_pythons=()
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local config_base=${EROOT}etc/env.d/python
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# start with the 'global' preference (2 vs 3)
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if [[ -f ${config_base}/config ]]; then
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old_pythons+=( "$(<${config_base}/config)" )
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fi
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# then try specific py3 selection
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for py in 3; do
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local target=
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if [[ -f ${config_base}/python${py} ]]; then
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# try the newer config files
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target=$(<${config_base}/python${py})
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elif [[ -L ${EROOT}/usr/bin/python${py} ]]; then
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# check the older symlink format
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target=$(readlink "${EROOT}/usr/bin/python${py}")
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# check if it's actually old eselect symlink
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[[ ${target} == python?.? ]] || target=
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fi
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# add the extra target if found and != global
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if [[ ${target} && ${old_pythons[0]} != ${target} ]]; then
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old_pythons+=( "${target}" )
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fi
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done
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if [[ ${old_pythons[@]} ]]; then
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elog "You seem to have just upgraded into the new version of python-exec"
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elog "that uses python-exec.conf for configuration. The ebuild has attempted"
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elog "to convert your previous configuration to the new format, resulting"
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elog "in the following preferences (most preferred version first):"
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elog
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for py in "${old_pythons[@]}"; do
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elog " ${py}"
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done
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elog
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elog "Those interpreters will be preferred when running Python scripts or"
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elog "calling wrapped Python executables (python, python2, pydoc...)."
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elog "If none of the preferred interpreters are supported, python-exec will"
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elog "fall back to the newest supported Python version."
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elog
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elog "Please note that due to the ambiguous character of the old settings,"
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elog "you may want to modify the preference list yourself. In order to do so,"
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elog "open the following file in your favorite editor:"
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elog
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elog " ${EROOT}etc/python-exec/python-exec.conf"
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elog
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elog "For more information on the new configuration format, please read"
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elog "the comment on top of the installed configuration file."
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local IFS=$'\n'
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echo "${old_pythons[*]}" \
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>> "${ED}"etc/python-exec/python-exec.conf || die
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fi
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fi
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}
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