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Revision 1.17 - (show annotations) (download)
Sat May 5 18:00:21 2012 UTC (23 months, 1 week ago) by floppym
Branch: MAIN
Changes since 1.16: +2 -2 lines
Simplify ${D%/}/ to ${D}; PMS says ${D} always has a trailing slash, and it works without a trailing slash anyway.

1 # Copyright 1999-2012 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/python-distutils-ng.eclass,v 1.16 2012/05/04 08:31:43 nelchael Exp $
4
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 # directory (so it will not contain any implementation-specific files)
29
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 "${PYTHON_COMPAT}" ]]; then
37 # Default: pure python, support all implementations
38 PYTHON_COMPAT=" python2_5 python2_6 python2_7"
39 PYTHON_COMPAT+=" python3_1 python3_2"
40 PYTHON_COMPAT+=" jython2_5"
41 PYTHON_COMPAT+=" pypy1_7 pypy1_8"
42 fi
43
44 # @ECLASS-VARIABLE: PYTHON_OPTIONAL
45 # @DESCRIPTION:
46 # Set the value to "yes" to make the dependency on a Python interpreter
47 # optional.
48
49 # @ECLASS-VARIABLE: PYTHON_DISABLE_COMPILATION
50 # @DESCRIPTION:
51 # Set the value to "yes" to skip compilation and/or optimization of Python
52 # modules.
53
54 EXPORT_FUNCTIONS pkg_pretend src_prepare src_configure src_compile src_test src_install
55
56 case "${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 required_use_str=""
88 for impl in ${PYTHON_COMPAT}; do
89 required_use_str+=" python_targets_${impl}"
90 done
91 required_use_str=" || ( ${required_use_str} )"
92 if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
93 IUSE+=" python"
94 REQUIRED_USE+=" python? ( ${required_use_str} )"
95 else
96 REQUIRED_USE+=" ${required_use_str}"
97 fi
98 unset required_use_str
99
100 for impl in ${PYTHON_COMPAT}; do
101 IUSE+=" python_targets_${impl}"
102 dep_str="${impl/_/.}"
103 case "${dep_str}" in
104 python?.?)
105 dep_str="dev-lang/python:${dep_str: -3}" ;;
106 jython?.?)
107 dep_str="dev-java/jython:${dep_str: -3}" ;;
108 pypy?.?)
109 dep_str="dev-python/pypy:${dep_str: -3}" ;;
110 *)
111 die "Unsupported implementation: ${impl}" ;;
112 esac
113 dep_str="python_targets_${impl}? ( ${dep_str} )"
114
115 if [[ "${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} ${dep_str}"
121 fi
122 unset dep_str
123 done
124
125 _PACKAGE_SPECIFIC_S="${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="${2}"
136
137 local S="${WORKDIR}/impl_${impl}/${_PACKAGE_SPECIFIC_S}"
138 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 local compile_flags="--compile -O2"
175
176 case "${1}" in
177 jython*)
178 # Jython does not support optimizations
179 compile_flags="--compile" ;;
180 esac
181
182 unset PYTHONDONTWRITEBYTECODE
183 [[ -n "${PYTHON_DISABLE_COMPILATION}" ]] && compile_flags="--no-compile"
184 "${PYTHON}" setup.py install ${compile_flags} --root="${D}" || die
185 }
186
187 # @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 # @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 use "python_targets_${default_impl}" || \
254 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 # Phase function: pkg_pretend
285 python-distutils-ng_pkg_pretend() {
286 if has "collision-protect" ${FEATURES}; then
287 ewarn "Due to previous eclass compiling Python files outside of src_install"
288 ewarn "(and not recording resulting .pyc and .pyo files as owned by any package)"
289 ewarn "merging this package with \"collision-protect\" in FEATURES may result"
290 ewarn "in an error, please switch to using \"protect-owned\" instead."
291 fi
292 }
293
294 # Phase function: src_prepare
295 python-distutils-ng_src_prepare() {
296 [[ "${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 ${S} for all"
369 pushd "${S}" &> /dev/null
370 python_install_all
371 popd &> /dev/null
372 fi
373 }

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