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|
# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header$
# @ECLASS: python-distutils-ng
# @MAINTAINER:
# Python herd <python@gentoo.org>
# @AUTHOR:
# Author: Krzysztof Pawlik <nelchael@gentoo.org>
# @BLURB: An eclass for installing Python packages using distutils with proper
# support for multiple Python slots.
# @DESCRIPTION:
# The Python eclass is designed to allow an easier installation of Python
# packages and their incorporation into the Gentoo Linux system.
#
# TODO: Document implementations!
# @ECLASS-VARIABLE: USE_PYTHON
# @DESCRIPTION:
# This variable contains a space separated list of targets (see above) a package
# is compatible to. It must be set before the `inherit' call. The default is to
# enable all targets.
if [[ -z "${USE_PYTHON}" ]]; then
# Default: pure python, support all implementations
USE_PYTHON=" python2_5 python2_6 python2_7"
USE_PYTHON+=" python3_1 python3_2"
USE_PYTHON+=" jython2_5"
USE_PYTHON+=" pypy1_7 pypy1_8"
fi
# @ECLASS-VARIABLE: PYTHON_OPTIONAL
# @DESCRIPTION:
# Set the value to "yes" to make the dependency on a Python interpreter
# optional.
# @ECLASS-VARIABLE: PYTHON_DISABLE_COMPILATION
# @DESCRIPTION:
# Set the value to "yes" to skip compilation and/or optimization of Python
# modules.
EXPORT_FUNCTIONS src_unpack src_prepare src_configure src_compile src_test src_install
case "${EAPI}" in
0|1|2|3)
die "Unsupported EAPI=${EAPI} (too old) for python-distutils-ng.eclass" ;;
4)
# EAPI=4 needed for REQUIRED_USE
S="${S:-${WORKDIR}/${P}}"
;;
*)
die "Unsupported EAPI=${EAPI} (unknown) for python-distutils-ng.eclass" ;;
esac
# @FUNCTION: _python-distutils-ng_generate_depend
# @USAGE: implementation
# @RETURN: Package atom of a Python implementation for *DEPEND.
# @DESCRIPTION:
# This function returns the full package atom of a Python implementation.
#
# `implementation' has to be one of the valid values for USE_PYTHON.
_python-distutils-ng_generate_depend() {
local impl="${1/_/.}"
case "${impl}" in
python?.?)
echo "dev-lang/${impl::-3}:${impl: -3}" ;;
jython?.?)
echo "dev-java/${impl::-3}:${impl: -3}" ;;
pypy?.?)
echo "dev-python/${impl::-3}:${impl: -3}" ;;
*)
die "Unsupported implementation: ${1}" ;;
esac
}
# @FUNCTION: _python-distutils-ng_get_binary_for_implementation
# @USAGE: implementation
# @RETURN: Full path to Python binary for given implementation.
# @DESCRIPTION:
# This function returns full path for Python binary for given implementation.
#
# Binary returned by this function should be used instead of simply calling
# `python'.
_python-distutils-ng_get_binary_for_implementation() {
local impl="${1/_/.}"
case "${impl}" in
python?.?|jython?.?)
echo "/usr/bin/${impl}" ;;
pypy?.?)
echo "TODO" ;;
*)
die "Unsupported implementation: ${1}" ;;
esac
}
required_use_str=" || (
python_targets_python2_5 python_targets_python2_6 python_targets_python2_7
python_targets_python3_1 python_targets_python3_2
python_targets_jython2_5
python_targets_pypy1_7 python_targets_pypy1_8 )"
if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
IUSE+="python"
REQUIRED_USE+=" python? ( ${required_use_str} )"
else
REQUIRED_USE+="${required_use_str}"
fi
for impl in ${USE_PYTHON}; do
IUSE+=" python_targets_${impl} "
local dep_str="python_targets_${impl}? ( $(_python-distutils-ng_generate_depend "${impl}") )"
if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
RDEPEND="${RDEPEND} python? ( ${dep_str} )"
DEPEND="${DEPEND} python? ( ${dep_str} )"
else
RDEPEND="${RDEPEND} ${dep_str}"
DEPEND="${DEPEND} ${dep_str}"
fi
done
PACKAGE_SPECIFIC_S="${S#${WORKDIR}/}"
# @FUNCTION: _python-distutils-ng_run_for_impl
# @USAGE: implementation command_to_run
# @DESCRIPTION:
# Run command_to_run using specified Python implementation.
#
# This will run the command_to_run in implementation-specific working directory.
_python-distutils-ng_run_for_impl() {
local impl="${1}"
local command="${2}"
S="${WORKDIR}/impl_${impl}/${PACKAGE_SPECIFIC_S}"
PYTHON="$(_python-distutils-ng_get_binary_for_implementation "${impl}")"
einfo "Running ${command} in ${S} for ${impl}"
pushd "${S}" &> /dev/null
"${command}" "${impl}" "${PYTHON}"
popd &> /dev/null
}
# @FUNCTION: _python-distutils-ng_run_for_all_impls
# @USAGE: command_to_run
# @DESCRIPTION:
# Run command_to_run for all enabled Python implementations.
#
# See also _python-distutils-ng_run_for_impl
_python-distutils-ng_run_for_all_impls() {
local command="${1}"
for impl in ${USE_PYTHON}; do
use "python_targets_${impl}" ${USE_PYTHON} || continue
_python-distutils-ng_run_for_impl "${impl}" "${command}"
done
}
# @FUNCTION: _python-distutils-ng_default_distutils_compile
# @DESCRIPTION:
# Default src_compile for distutils-based packages.
_python-distutils-ng_default_distutils_compile() {
"${PYTHON}" setup.py build || die
}
# @FUNCTION: _python-distutils-ng_default_distutils_install
# @DESCRIPTION:
# Default src_install for distutils-based packages.
_python-distutils-ng_default_distutils_install() {
"${PYTHON}" setup.py install --no-compile --root="${D}/" || die
}
# @FUNCTION: _python-distutils-ng_has_compileall
# @USAGE: implementation
# @RETURN: 0 if given implementation has compileall module
# @DESCRIPTION:
# This function is used to decide whenever to compile Python modules for given
# implementation.
_python-distutils-ng_has_compileall() {
case "${1}" in
python?_?|jython?_?)
return 0 ;;
*)
return 1 ;;
esac
}
# @FUNCTION: _python-distutils-ng_has_compileall_opt
# @USAGE: implementation
# @RETURN: 0 if given implementation has compileall module and supports # optimizations
# @DESCRIPTION:
# This function is used to decide whenever to compile and optimize Python
# modules for given implementation.
_python-distutils-ng_has_compileall_opt() {
case "${1}" in
python?_?)
return 0 ;;
*)
return 1 ;;
esac
}
# @FUNCTION: python-distutils-ng_doscript
# @USAGE: script_file_name
# @DESCRIPTION:
# Install given script file in /usr/bin/ for all enabled implementations using
# original script name as a base name.
#
# See also python-distutils-ng_newscript
python-distutils-ng_doscript() {
python-distutils-ng_newscript "${1}" "$(basename "${1}")"
}
# @FUNCTION: python-distutils-ng_newscript
# @USAGE: script_file_name new_file_name
# @DESCRIPTION:
# Install given script file in /usr/bin/ for all enabled implementations using
# new_file_name as a base name.
#
# Each script copy will have the name mangled to "new_file_name-IMPLEMENTATION"
# and new hash-bang line will be inserted to reference specific Python
# interpreter.
#
# There will be also a symlink with name equal to new_file_name that will be a
# symlink to default implementation, which defaults to value of
# PYTHON_DEFAULT_IMPLEMENTATION, if not specified the function will pick default
# implementation: it will the be first enabled from the following list:
# python2_7, python2_6, python2_5, python3_2, python3_1, pypy1_8, pypy1_7, jython2_5
python-distutils-ng_newscript() {
[[ -n "${1}" ]] || die "Missing source file name"
[[ -n "${2}" ]] || die "Missing destination file name"
local source_file="${1}"
local destination_file="${2}"
local default_impl="${PYTHON_DEFAULT_IMPLEMENTATION}"
if [[ -z "${default_impl}" ]]; then
# TODO: Pick default implementation
for impl in python{2_7,2_6,2_5,3_2,2_1} pypy{1_8,1_7} jython2_5; do
use "python_targets_${impl}" || continue
default_impl="${impl}"
break;
done
else
use "python_targets_${impl}" || \
die "default implementation ${default_impl} not enabled"
fi
[[ -n "${default_impl}" ]] || die "Could not select default implementation"
einfo "Installing ${source_file} for multiple implementations (default: ${default_impl})"
insinto /usr/bin
for impl in ${USE_PYTHON}; do
use "python_targets_${impl}" ${USE_PYTHON} || continue
newins "${source_file}" "${destination_file}-${impl}"
fperms 755 "/usr/bin/${destination_file}-${impl}"
sed -i \
-e "1i#!$(_python-distutils-ng_get_binary_for_implementation "${impl}")" \
"${D}/usr/bin/${destination_file}-${impl}" || die
done
dosym "${destination_file}-${default_impl}" "/usr/bin/${destination_file}"
}
# Phase function: src_unpack
python-distutils-ng_src_unpack() {
[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
if type python_unpack &> /dev/null; then
# This should not run anything specific to any single Python
# implementation, keep it generic:
python_unpack_all
else
[[ -n ${A} ]] && unpack ${A}
fi
}
# Phase function: src_prepare
python-distutils-ng_src_prepare() {
[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
# Try to run binary for each implementation:
for impl in ${USE_PYTHON}; do
use "python_targets_${impl}" ${USE_PYTHON} || continue
$(_python-distutils-ng_get_binary_for_implementation "${impl}") \
-c "import sys" || die
done
# Run prepare shared by all implementations:
if type python_prepare_all &> /dev/null; then
einfo "Running python_prepare_all in ${S} for all"
python_prepare_all
fi
# Create a copy of S for each implementation:
for impl in ${USE_PYTHON}; do
use "python_targets_${impl}" ${USE_PYTHON} || continue
einfo "Creating copy for ${impl} in ${WORKDIR}/impl_${impl}"
mkdir -p "${WORKDIR}/impl_${impl}" || die
cp -pr "${S}" "${WORKDIR}/impl_${impl}/${PACKAGE_SPECIFIC_S}" || die
done
# Run python_prepare for each implementation:
if type python_prepare &> /dev/null; then
_python-distutils-ng_run_for_all_impls python_prepare
fi
}
# Phase function: src_configure
python-distutils-ng_src_configure() {
[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
if type python_configure &> /dev/null; then
_python-distutils-ng_run_for_all_impls python_configure
fi
}
# Phase function: src_compile
python-distutils-ng_src_compile() {
[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
if type python_compile &> /dev/null; then
_python-distutils-ng_run_for_all_impls python_compile
else
_python-distutils-ng_run_for_all_impls \
_python-distutils-ng_default_distutils_compile
fi
}
# Phase function: src_test
python-distutils-ng_src_test() {
[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
if type python_test &> /dev/null; then
_python-distutils-ng_run_for_all_impls python_test
fi
}
# Phase function: src_install
python-distutils-ng_src_install() {
[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
if type python_install &> /dev/null; then
_python-distutils-ng_run_for_all_impls python_install
else
_python-distutils-ng_run_for_all_impls \
_python-distutils-ng_default_distutils_install
fi
S="${WORKDIR}/${PACKAGE_SPECIFIC_S}"
if type python_install_all &> /dev/null; then
einfo "Running python_install_all in ${S} for all"
python_install_all
fi
for impl in ${USE_PYTHON}; do
[[ "${PYTHON_DISABLE_COMPILATION}" = "yes" ]] && continue
use "python_targets_${impl}" ${USE_PYTHON} || continue
PYTHON="$(_python-distutils-ng_get_binary_for_implementation "${impl}")"
for accessible_path in $(${PYTHON} -c 'import sys; print " ".join(sys.path)'); do
[[ -d "${D}/${accessible_path}" ]] || continue
_python-distutils-ng_has_compileall "${impl}" || continue
ebegin "Compiling ${accessible_path} for ${impl}"
${PYTHON} \
-m compileall -q -f "${D}/${accessible_path}" || die
eend $?
_python-distutils-ng_has_compileall_opt "${impl}" || continue
ebegin "Optimizing ${accessible_path} for ${impl}"
PYTHONOPTIMIZE=1 ${PYTHON} \
-m compileall -q -f "${D}/${accessible_path}" || die
eend $?
done;
done
}
|