gentoo-x86/eclass/python-distutils-ng.eclass

# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/python-distutils-ng.eclass,v 1.15 2012/05/03 00:31:58 floppym Exp $

# @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.
#
# This eclass provides functions for following phases:
#  - src_prepare - you can define python_prepare_all function that will be run
#    before creating implementation-specific directory and python_prepare
#    function that will be run for each implementation
#  - src_configure - you can define python_configure function that will be run
#    for each implementation
#  - src_compile - you can define python_compile function that will be run for
#    each implementation, default function will run `setup.py build'
#  - src_test - you can define python_test function that will be run for each
#    implementation
#  - src_install - you can define python_install function that will be run for
#    each implementation and python_install_all that will be run in original
#    directory (so it will not contain any implementation-specific files)

# @ECLASS-VARIABLE: PYTHON_COMPAT
# @DESCRIPTION:
# This variable contains a space separated list of implementations (see above) a
# package is compatible to. It must be set before the `inherit' call. The
# default is to enable all implementations.

if [[ -z "${PYTHON_COMPAT}" ]]; then
        # Default: pure python, support all implementations
        PYTHON_COMPAT="  python2_5 python2_6 python2_7"
        PYTHON_COMPAT+=" python3_1 python3_2"
        PYTHON_COMPAT+=" jython2_5"
        PYTHON_COMPAT+=" 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 pkg_pretend 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_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/${impl}" ;;
                pypy?.?)
                        echo "/usr/bin/pypy-c${impl: -3}" ;;
                *)
                        die "Unsupported implementation: ${1}" ;;
        esac
}

required_use_str=""
for impl in ${PYTHON_COMPAT}; do
        required_use_str+=" python_targets_${impl}"
done
required_use_str=" || ( ${required_use_str} )"
if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
        IUSE+=" python"
        REQUIRED_USE+=" python? ( ${required_use_str} )"
else
        REQUIRED_USE+=" ${required_use_str}"
fi
unset required_use_str

for impl in ${PYTHON_COMPAT}; do
        IUSE+=" python_targets_${impl}"
        dep_str="${impl/_/.}"
        case "${dep_str}" in
                python?.?)
                        dep_str="dev-lang/python:${dep_str: -3}" ;;
                jython?.?)
                        dep_str="dev-java/jython:${dep_str: -3}" ;;
                pypy?.?)
                        dep_str="dev-python/pypy:${dep_str: -3}" ;;
                *)
                        die "Unsupported implementation: ${impl}" ;;
        esac
        dep_str="python_targets_${impl}? ( ${dep_str} )"

        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
        unset dep_str
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}"

        local S="${WORKDIR}/impl_${impl}/${_PACKAGE_SPECIFIC_S}"
        PYTHON="$(_python-distutils-ng_get_binary_for_implementation "${impl}")"
        EPYTHON="${impl/_/.}"

        einfo "Running ${command} in ${S} for ${impl}"

        pushd "${S}" &> /dev/null
        "${command}" "${impl}" "${PYTHON}"
        popd &> /dev/null
}

# @FUNCTION: _python-distutils-ng_run_for_each_impl
# @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_each_impl() {
        local command="${1}"

        for impl in ${PYTHON_COMPAT}; do
                use "python_targets_${impl}" ${PYTHON_COMPAT} || continue
                _python-distutils-ng_run_for_impl "${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() {
        local compile_flags="--compile -O2"

        case "${1}" in
                jython*)
                        # Jython does not support optimizations
                        compile_flags="--compile" ;;
        esac

        unset PYTHONDONTWRITEBYTECODE
        [[ -n "${PYTHON_DISABLE_COMPILATION}" ]] && compile_flags="--no-compile"
        "${PYTHON}" setup.py install ${compile_flags} --root="${D%/}/" || die
}

# @FUNCTION: python-distutils-ng_redoscript
# @USAGE: script_file_path [destination_directory]
# @DESCRIPTION:
# Reinstall script installed already by setup.py. This works by first moving the
# script to ${T} directory and later running python-distutils-ng_doscript on it.
# script_file_path has to be a full path relative to ${D}.
python-distutils-ng_redoscript() {
        local sbn="$(basename "${1}")"
        mkdir -p "${T}/_${sbn}/" || die "failed to create directory"
        mv "${D}/${1}" "${T}/_${sbn}/${sbn}" || die "failed to move file"
        python-distutils-ng_doscript "${T}/_${sbn}/${sbn}" "${2}"
}

# @FUNCTION: python-distutils-ng_doscript
# @USAGE: script_file_name [destination_directory]
# @DESCRIPTION:
# Install given script file in destination directory (for default value check
# python-distutils-ng_newscript) for all enabled implementations using original
# script name as a base name.
#
# See also python-distutils-ng_newscript for more details.
python-distutils-ng_doscript() {
        python-distutils-ng_newscript "${1}" "$(basename "${1}")" "${2}"
}

# @FUNCTION: python-distutils-ng_newscript
# @USAGE: script_file_name new_file_name [destination_directory]
# @DESCRIPTION:
# Install given script file in destination directory for all enabled
# implementations using new_file_name as a base name.
#
# Destination directory defaults to /usr/bin.
#
# If only one Python implementation is enabled the script will be installed
# as-is. Otherwise each script copy will have the name mangled to
# "new_file_name-IMPLEMENTATION". For every installed script new hash-bang line
# will be inserted to reference specific Python interpreter.
#
# In case of multiple implementations 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 one
# 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="${PYTHON_DEFAULT_IMPLEMENTATION}"
        local enabled_impls=0
        local destination_directory="/usr/bin"
        [[ -n "${3}" ]] && destination_directory="${3}"

        for impl in ${PYTHON_COMPAT}; do
                use "python_targets_${impl}" || continue
                enabled_impls=$((enabled_impls + 1))
        done

        if [[ -z "${default_impl}" ]]; then
                for impl in python{2_7,2_6,2_5,3_2,3_1} pypy{1_8,1_7} jython2_5; do
                        use "python_targets_${impl}" || continue
                        default_impl="${impl}"
                        break
                done
        else
                use "python_targets_${default_impl}" || \
                        die "default implementation ${default_impl} not enabled"
        fi

        [[ -n "${default_impl}" ]] || die "Could not select default implementation"

        dodir "${destination_directory}"
        insinto "${destination_directory}"
        if [[ "${enabled_impls}" = "1" ]]; then
                einfo "Installing ${source_file} for single implementation (${default_impl}) in ${destination_directory}"
                newins "${source_file}" "${destination_file}"
                fperms 755 "${destination_directory}/${destination_file}"
                sed -i \
                        -e "1i#!$(_python-distutils-ng_get_binary_for_implementation "${impl}")" \
                        "${D}${destination_directory}/${destination_file}" || die
        else
                einfo "Installing ${source_file} for multiple implementations (default: ${default_impl}) in ${destination_directory}"
                for impl in ${PYTHON_COMPAT}; do
                        use "python_targets_${impl}" ${PYTHON_COMPAT} || continue

                        newins "${source_file}" "${destination_file}-${impl}"
                        fperms 755 "${destination_directory}/${destination_file}-${impl}"
                        sed -i \
                                -e "1i#!$(_python-distutils-ng_get_binary_for_implementation "${impl}")" \
                                "${D}${destination_directory}/${destination_file}-${impl}" || die
                done

                dosym "${destination_file}-${default_impl}" "${destination_directory}/${destination_file}"
        fi
}

# Phase function: pkg_pretend
python-distutils-ng_pkg_pretend() {
        if has "collision-protect" ${FEATURES}; then
                ewarn "Due to previous eclass compiling Python files outside of src_install"
                ewarn "(and not recording resulting .pyc and .pyo files as owned by any package)"
                ewarn "merging this package with \"collision-protect\" in FEATURES may result"
                ewarn "in an error, please switch to using \"protect-owned\" instead."
        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 ${PYTHON_COMPAT}; do
                use "python_targets_${impl}" ${PYTHON_COMPAT} || 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 ${PYTHON_COMPAT}; do
                use "python_targets_${impl}" ${PYTHON_COMPAT} || 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_each_impl 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_each_impl 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_each_impl python_compile
        else
                _python-distutils-ng_run_for_each_impl \
                        _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_each_impl 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_each_impl python_install
        else
                _python-distutils-ng_run_for_each_impl \
                        _python-distutils-ng_default_distutils_install
        fi

        if type python_install_all &> /dev/null; then
                einfo "Running python_install_all in ${S} for all"
                pushd "${S}" &> /dev/null
                python_install_all
                popd &> /dev/null
        fi
}
1	nelchael	1.1	# Copyright 1999-2012 Gentoo Foundation
2			# Distributed under the terms of the GNU General Public License v2
3	nelchael	1.16	# $Header: /var/cvsroot/gentoo-x86/eclass/python-distutils-ng.eclass,v 1.15 2012/05/03 00:31:58 floppym Exp $
4	nelchael	1.1
5			# @ECLASS: python-distutils-ng
6			# @MAINTAINER:
7			# Python herd <python@gentoo.org>
8			# @AUTHOR:
9			# Author: Krzysztof Pawlik <nelchael@gentoo.org>
10			# @BLURB: An eclass for installing Python packages using distutils with proper
11			# support for multiple Python slots.
12			# @DESCRIPTION:
13			# The Python eclass is designed to allow an easier installation of Python
14			# packages and their incorporation into the Gentoo Linux system.
15			#
16			# This eclass provides functions for following phases:
17			# - src_prepare - you can define python_prepare_all function that will be run
18			# before creating implementation-specific directory and python_prepare
19			# function that will be run for each implementation
20			# - src_configure - you can define python_configure function that will be run
21			# for each implementation
22			# - src_compile - you can define python_compile function that will be run for
23			# each implementation, default function will run `setup.py build'
24			# - src_test - you can define python_test function that will be run for each
25			# implementation
26			# - src_install - you can define python_install function that will be run for
27			# each implementation and python_install_all that will be run in original
28	nelchael	1.9	# directory (so it will not contain any implementation-specific files)
29	nelchael	1.1
30			# @ECLASS-VARIABLE: PYTHON_COMPAT
31			# @DESCRIPTION:
32			# This variable contains a space separated list of implementations (see above) a
33			# package is compatible to. It must be set before the `inherit' call. The
34			# default is to enable all implementations.
35
36			if [[ -z "${PYTHON_COMPAT}" ]]; then
37			# Default: pure python, support all implementations
38			PYTHON_COMPAT=" python2_5 python2_6 python2_7"
39			PYTHON_COMPAT+=" python3_1 python3_2"
40			PYTHON_COMPAT+=" jython2_5"
41			PYTHON_COMPAT+=" pypy1_7 pypy1_8"
42			fi
43
44			# @ECLASS-VARIABLE: PYTHON_OPTIONAL
45			# @DESCRIPTION:
46			# Set the value to "yes" to make the dependency on a Python interpreter
47			# optional.
48
49			# @ECLASS-VARIABLE: PYTHON_DISABLE_COMPILATION
50			# @DESCRIPTION:
51			# Set the value to "yes" to skip compilation and/or optimization of Python
52			# modules.
53
54	nelchael	1.10	EXPORT_FUNCTIONS pkg_pretend src_prepare src_configure src_compile src_test src_install
55	nelchael	1.1
56			case "${EAPI}" in
57			0\|1\|2\|3)
58			die "Unsupported EAPI=${EAPI} (too old) for python-distutils-ng.eclass" ;;
59			4)
60			# EAPI=4 needed for REQUIRED_USE
61			S="${S:-${WORKDIR}/${P}}"
62			;;
63			*)
64			die "Unsupported EAPI=${EAPI} (unknown) for python-distutils-ng.eclass" ;;
65			esac
66
67			# @FUNCTION: _python-distutils-ng_get_binary_for_implementation
68			# @USAGE: implementation
69			# @RETURN: Full path to Python binary for given implementation.
70			# @DESCRIPTION:
71			# This function returns full path for Python binary for given implementation.
72			#
73			# Binary returned by this function should be used instead of simply calling
74			# `python'.
75			_python-distutils-ng_get_binary_for_implementation() {
76			local impl="${1/_/.}"
77			case "${impl}" in
78			python?.?\|jython?.?)
79			echo "/usr/bin/${impl}" ;;
80			pypy?.?)
81			echo "/usr/bin/pypy-c${impl: -3}" ;;
82			*)
83			die "Unsupported implementation: ${1}" ;;
84			esac
85			}
86
87	nelchael	1.3	required_use_str=""
88			for impl in ${PYTHON_COMPAT}; do
89	nelchael	1.4	required_use_str+=" python_targets_${impl}"
90	nelchael	1.3	done
91			required_use_str=" \|\| ( ${required_use_str} )"
92	nelchael	1.1	if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
93	nelchael	1.4	IUSE+=" python"
94	nelchael	1.1	REQUIRED_USE+=" python? ( ${required_use_str} )"
95			else
96	jlec	1.2	REQUIRED_USE+=" ${required_use_str}"
97	nelchael	1.1	fi
98	nelchael	1.4	unset required_use_str
99	nelchael	1.1
100			for impl in ${PYTHON_COMPAT}; do
101	nelchael	1.4	IUSE+=" python_targets_${impl}"
102	nelchael	1.6	dep_str="${impl/_/.}"
103			case "${dep_str}" in
104			python?.?)
105	marienz	1.8	dep_str="dev-lang/python:${dep_str: -3}" ;;
106	nelchael	1.6	jython?.?)
107	marienz	1.8	dep_str="dev-java/jython:${dep_str: -3}" ;;
108	nelchael	1.6	pypy?.?)
109	marienz	1.8	dep_str="dev-python/pypy:${dep_str: -3}" ;;
110	nelchael	1.6	*)
111			die "Unsupported implementation: ${impl}" ;;
112			esac
113			dep_str="python_targets_${impl}? ( ${dep_str} )"
114	nelchael	1.1
115			if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
116			RDEPEND="${RDEPEND} python? ( ${dep_str} )"
117			DEPEND="${DEPEND} python? ( ${dep_str} )"
118			else
119			RDEPEND="${RDEPEND} ${dep_str}"
120			DEPEND="${DEPEND} ${dep_str}"
121			fi
122	nelchael	1.4	unset dep_str
123	nelchael	1.1	done
124
125			_PACKAGE_SPECIFIC_S="${S#${WORKDIR}/}"
126
127			# @FUNCTION: _python-distutils-ng_run_for_impl
128			# @USAGE: implementation command_to_run
129			# @DESCRIPTION:
130			# Run command_to_run using specified Python implementation.
131			#
132			# This will run the command_to_run in implementation-specific working directory.
133			_python-distutils-ng_run_for_impl() {
134			local impl="${1}"
135			local command="${2}"
136
137	floppym	1.15	local S="${WORKDIR}/impl_${impl}/${_PACKAGE_SPECIFIC_S}"
138	nelchael	1.1	PYTHON="$(_python-distutils-ng_get_binary_for_implementation "${impl}")"
139			EPYTHON="${impl/_/.}"
140
141			einfo "Running ${command} in ${S} for ${impl}"
142
143			pushd "${S}" &> /dev/null
144			"${command}" "${impl}" "${PYTHON}"
145			popd &> /dev/null
146			}
147
148			# @FUNCTION: _python-distutils-ng_run_for_each_impl
149			# @USAGE: command_to_run
150			# @DESCRIPTION:
151			# Run command_to_run for all enabled Python implementations.
152			#
153			# See also _python-distutils-ng_run_for_impl
154			_python-distutils-ng_run_for_each_impl() {
155			local command="${1}"
156
157			for impl in ${PYTHON_COMPAT}; do
158			use "python_targets_${impl}" ${PYTHON_COMPAT} \|\| continue
159			_python-distutils-ng_run_for_impl "${impl}" "${command}"
160			done
161			}
162
163			# @FUNCTION: _python-distutils-ng_default_distutils_compile
164			# @DESCRIPTION:
165			# Default src_compile for distutils-based packages.
166			_python-distutils-ng_default_distutils_compile() {
167			"${PYTHON}" setup.py build \|\| die
168			}
169
170			# @FUNCTION: _python-distutils-ng_default_distutils_install
171			# @DESCRIPTION:
172			# Default src_install for distutils-based packages.
173			_python-distutils-ng_default_distutils_install() {
174	nelchael	1.16	local compile_flags="--compile -O2"
175	nelchael	1.1
176			case "${1}" in
177	nelchael	1.16	jython*)
178			# Jython does not support optimizations
179			compile_flags="--compile" ;;
180	nelchael	1.1	esac
181
182	nelchael	1.16	unset PYTHONDONTWRITEBYTECODE
183			[[ -n "${PYTHON_DISABLE_COMPILATION}" ]] && compile_flags="--no-compile"
184			"${PYTHON}" setup.py install ${compile_flags} --root="${D%/}/" \|\| die
185	nelchael	1.1	}
186
187	nelchael	1.11	# @FUNCTION: python-distutils-ng_redoscript
188			# @USAGE: script_file_path [destination_directory]
189			# @DESCRIPTION:
190			# Reinstall script installed already by setup.py. This works by first moving the
191			# script to ${T} directory and later running python-distutils-ng_doscript on it.
192			# script_file_path has to be a full path relative to ${D}.
193			python-distutils-ng_redoscript() {
194			local sbn="$(basename "${1}")"
195			mkdir -p "${T}/_${sbn}/" \|\| die "failed to create directory"
196			mv "${D}/${1}" "${T}/_${sbn}/${sbn}" \|\| die "failed to move file"
197			python-distutils-ng_doscript "${T}/_${sbn}/${sbn}" "${2}"
198			}
199
200	nelchael	1.1	# @FUNCTION: python-distutils-ng_doscript
201			# @USAGE: script_file_name [destination_directory]
202			# @DESCRIPTION:
203			# Install given script file in destination directory (for default value check
204			# python-distutils-ng_newscript) for all enabled implementations using original
205			# script name as a base name.
206			#
207			# See also python-distutils-ng_newscript for more details.
208			python-distutils-ng_doscript() {
209			python-distutils-ng_newscript "${1}" "$(basename "${1}")" "${2}"
210			}
211
212			# @FUNCTION: python-distutils-ng_newscript
213			# @USAGE: script_file_name new_file_name [destination_directory]
214			# @DESCRIPTION:
215			# Install given script file in destination directory for all enabled
216			# implementations using new_file_name as a base name.
217			#
218			# Destination directory defaults to /usr/bin.
219			#
220			# If only one Python implementation is enabled the script will be installed
221			# as-is. Otherwise each script copy will have the name mangled to
222			# "new_file_name-IMPLEMENTATION". For every installed script new hash-bang line
223			# will be inserted to reference specific Python interpreter.
224			#
225			# In case of multiple implementations there will be also a symlink with name
226			# equal to new_file_name that will be a symlink to default implementation, which
227			# defaults to value of PYTHON_DEFAULT_IMPLEMENTATION, if not specified the
228			# function will pick default implementation: it will the be first enabled one
229			# from the following list:
230			# python2_7, python2_6, python2_5, python3_2, python3_1, pypy1_8, pypy1_7, jython2_5
231			python-distutils-ng_newscript() {
232			[[ -n "${1}" ]] \|\| die "Missing source file name"
233			[[ -n "${2}" ]] \|\| die "Missing destination file name"
234			local source_file="${1}"
235			local destination_file="${2}"
236			local default_impl="${PYTHON_DEFAULT_IMPLEMENTATION}"
237			local enabled_impls=0
238			local destination_directory="/usr/bin"
239			[[ -n "${3}" ]] && destination_directory="${3}"
240
241			for impl in ${PYTHON_COMPAT}; do
242			use "python_targets_${impl}" \|\| continue
243			enabled_impls=$((enabled_impls + 1))
244			done
245
246			if [[ -z "${default_impl}" ]]; then
247			for impl in python{2_7,2_6,2_5,3_2,3_1} pypy{1_8,1_7} jython2_5; do
248			use "python_targets_${impl}" \|\| continue
249			default_impl="${impl}"
250			break
251			done
252			else
253	nelchael	1.9	use "python_targets_${default_impl}" \|\| \
254	nelchael	1.1	die "default implementation ${default_impl} not enabled"
255			fi
256
257			[[ -n "${default_impl}" ]] \|\| die "Could not select default implementation"
258
259			dodir "${destination_directory}"
260			insinto "${destination_directory}"
261			if [[ "${enabled_impls}" = "1" ]]; then
262			einfo "Installing ${source_file} for single implementation (${default_impl}) in ${destination_directory}"
263			newins "${source_file}" "${destination_file}"
264			fperms 755 "${destination_directory}/${destination_file}"
265			sed -i \
266			-e "1i#!$(_python-distutils-ng_get_binary_for_implementation "${impl}")" \
267			"${D}${destination_directory}/${destination_file}" \|\| die
268			else
269			einfo "Installing ${source_file} for multiple implementations (default: ${default_impl}) in ${destination_directory}"
270			for impl in ${PYTHON_COMPAT}; do
271			use "python_targets_${impl}" ${PYTHON_COMPAT} \|\| continue
272
273			newins "${source_file}" "${destination_file}-${impl}"
274			fperms 755 "${destination_directory}/${destination_file}-${impl}"
275			sed -i \
276			-e "1i#!$(_python-distutils-ng_get_binary_for_implementation "${impl}")" \
277			"${D}${destination_directory}/${destination_file}-${impl}" \|\| die
278			done
279
280			dosym "${destination_file}-${default_impl}" "${destination_directory}/${destination_file}"
281			fi
282			}
283
284	nelchael	1.10	# Phase function: pkg_pretend
285			python-distutils-ng_pkg_pretend() {
286			if has "collision-protect" ${FEATURES}; then
287	nelchael	1.13	ewarn "Due to previous eclass compiling Python files outside of src_install"
288			ewarn "(and not recording resulting .pyc and .pyo files as owned by any package)"
289			ewarn "merging this package with \"collision-protect\" in FEATURES may result"
290			ewarn "in an error, please switch to using \"protect-owned\" instead."
291	nelchael	1.10	fi
292			}
293
294	nelchael	1.1	# Phase function: src_prepare
295			python-distutils-ng_src_prepare() {
296			[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python \|\| return; }
297
298			# Try to run binary for each implementation:
299			for impl in ${PYTHON_COMPAT}; do
300			use "python_targets_${impl}" ${PYTHON_COMPAT} \|\| continue
301			$(_python-distutils-ng_get_binary_for_implementation "${impl}") \
302			-c "import sys" \|\| die
303			done
304
305			# Run prepare shared by all implementations:
306			if type python_prepare_all &> /dev/null; then
307			einfo "Running python_prepare_all in ${S} for all"
308			python_prepare_all
309			fi
310
311			# Create a copy of S for each implementation:
312			for impl in ${PYTHON_COMPAT}; do
313			use "python_targets_${impl}" ${PYTHON_COMPAT} \|\| continue
314
315			einfo "Creating copy for ${impl} in ${WORKDIR}/impl_${impl}"
316			mkdir -p "${WORKDIR}/impl_${impl}" \|\| die
317			cp -pr "${S}" "${WORKDIR}/impl_${impl}/${_PACKAGE_SPECIFIC_S}" \|\| die
318			done
319
320			# Run python_prepare for each implementation:
321			if type python_prepare &> /dev/null; then
322			_python-distutils-ng_run_for_each_impl python_prepare
323			fi
324			}
325
326			# Phase function: src_configure
327			python-distutils-ng_src_configure() {
328			[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python \|\| return; }
329
330			if type python_configure &> /dev/null; then
331			_python-distutils-ng_run_for_each_impl python_configure
332			fi
333			}
334
335			# Phase function: src_compile
336			python-distutils-ng_src_compile() {
337			[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python \|\| return; }
338
339			if type python_compile &> /dev/null; then
340			_python-distutils-ng_run_for_each_impl python_compile
341			else
342			_python-distutils-ng_run_for_each_impl \
343			_python-distutils-ng_default_distutils_compile
344			fi
345			}
346
347			# Phase function: src_test
348			python-distutils-ng_src_test() {
349			[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python \|\| return; }
350
351			if type python_test &> /dev/null; then
352			_python-distutils-ng_run_for_each_impl python_test
353			fi
354			}
355
356			# Phase function: src_install
357			python-distutils-ng_src_install() {
358			[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python \|\| return; }
359
360			if type python_install &> /dev/null; then
361			_python-distutils-ng_run_for_each_impl python_install
362			else
363			_python-distutils-ng_run_for_each_impl \
364			_python-distutils-ng_default_distutils_install
365			fi
366
367			if type python_install_all &> /dev/null; then
368			einfo "Running python_install_all in ${S} for all"
369	nelchael	1.12	pushd "${S}" &> /dev/null
370	nelchael	1.1	python_install_all
371	nelchael	1.12	popd &> /dev/null
372	nelchael	1.1	fi
373			}