-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: python-single-r1.eclass
# The eclass exports PYTHON_SINGLE_USEDEP that is suitable for depending
# on other packages using the eclass. Dependencies on packages using
# python-r1 should be created via python_gen_cond_dep() function,
-# using PYTHON_MULTI_USEDEP placeholder.
+# using PYTHON_USEDEP placeholder.
#
# Please note that packages support multiple Python implementations
# (using python-r1 eclass) can not depend on packages not supporting
# in the packages using python-single-r1, and there is no need ever
# to inherit both.
#
-# For more information, please see the wiki:
-# https://wiki.gentoo.org/wiki/Project:Python/python-single-r1
+# For more information, please see the Python Guide:
+# https://dev.gentoo.org/~mgorny/python-guide/
case "${EAPI:-0}" in
0|1|2|3|4)
#
# It should be noted that in order to preserve metadata immutability,
# PYTHON_COMPAT_OVERRIDE does not affect IUSE nor dependencies.
-# The state of PYTHON_TARGETS and PYTHON_SINGLE_TARGET is ignored,
-# and the implementation in PYTHON_COMPAT_OVERRIDE is built instead.
-# Dependencies need to be satisfied manually.
+# The state of PYTHON_SINGLE_TARGET is ignored, and the implementation
+# in PYTHON_COMPAT_OVERRIDE is built instead. Dependencies need to be
+# satisfied manually.
#
# Example:
# @CODE
# @CODE
# dev-lang/python-exec:=
# python_single_target_python2_7? ( dev-lang/python:2.7[gdbm] )
-# python_single_target_pypy? ( virtual/pypy[gdbm] )
+# python_single_target_pypy? ( dev-python/pypy[gdbm] )
# @CODE
# @ECLASS-VARIABLE: PYTHON_SINGLE_USEDEP
# Python implementations.
#
# If you need to depend on a multi-impl (python-r1) package, use
-# python_gen_cond_dep with PYTHON_MULTI_USEDEP placeholder instead.
+# python_gen_cond_dep with PYTHON_USEDEP placeholder instead.
#
# Example use:
# @CODE
# python_single_target_python3_4(-)?
# @CODE
-# @ECLASS-VARIABLE: PYTHON_MULTI_USEDEP
+# @ECLASS-VARIABLE: PYTHON_USEDEP
# @DESCRIPTION:
# This is a placeholder variable supported by python_gen_cond_dep,
# in order to depend on python-r1 packages built for the same Python
# Example use:
# @CODE
# RDEPEND="$(python_gen_cond_dep '
-# dev-python/foo[${PYTHON_MULTI_USEDEP}]
+# dev-python/foo[${PYTHON_USEDEP}]
# ')"
# @CODE
#
# python_targets_python3_4(-)
# @CODE
+# @ECLASS-VARIABLE: PYTHON_MULTI_USEDEP
+# @DESCRIPTION:
+# This is a backwards-compatibility placeholder. Use PYTHON_USEDEP
+# instead.
+
# @ECLASS-VARIABLE: PYTHON_REQUIRED_USE
# @DESCRIPTION:
-# This is an eclass-generated required-use expression which ensures the following
-# when more than one python implementation is possible:
-# 1. Exactly one PYTHON_SINGLE_TARGET value has been enabled.
-# 2. The selected PYTHON_SINGLE_TARGET value is enabled in PYTHON_TARGETS.
+# This is an eclass-generated required-use expression which ensures
+# that exactly one PYTHON_SINGLE_TARGET value has been enabled.
#
# This expression should be utilized in an ebuild by including it in
# REQUIRED_USE, optionally behind a use flag.
#
# Example value:
# @CODE
-# python_single_target_python2_7? ( python_targets_python2_7 )
-# python_single_target_python3_3? ( python_targets_python3_3 )
# ^^ ( python_single_target_python2_7 python_single_target_python3_3 )
# @CODE
_python_single_set_globals() {
_python_set_impls
- local flags_mt=( "${_PYTHON_SUPPORTED_IMPLS[@]/#/python_targets_}" )
local flags=( "${_PYTHON_SUPPORTED_IMPLS[@]/#/python_single_target_}" )
if [[ ${#_PYTHON_SUPPORTED_IMPLS[@]} -eq 1 ]]; then
# if only one implementation is supported, use IUSE defaults
# to avoid requesting the user to enable it
- IUSE="+${flags_mt[0]} +${flags[0]}"
+ IUSE="+${flags[0]}"
else
- IUSE="${flags_mt[*]} ${flags[*]}"
+ IUSE="${flags[*]}"
fi
local requse="^^ ( ${flags[*]} )"
local deps= i PYTHON_PKG_DEP
for i in "${_PYTHON_SUPPORTED_IMPLS[@]}"; do
- # The chosen targets need to be in PYTHON_TARGETS as well.
- # This is in order to enforce correct dependencies on packages
- # supporting multiple implementations.
- requse+=" python_single_target_${i}? ( python_targets_${i} )"
-
- python_export "${i}" PYTHON_PKG_DEP
+ _python_export "${i}" PYTHON_PKG_DEP
# 1) well, python-exec would suffice as an RDEP
# but no point in making this overcomplex, BDEP doesn't hurt anyone
# 2) python-exec should be built with all targets forced anyway
else
PYTHON_DEPS=${deps}
PYTHON_REQUIRED_USE=${requse}
+ PYTHON_USEDEP='%PYTHON_USEDEP-NEEDS-TO-BE-USED-IN-PYTHON_GEN_COND_DEP%'
PYTHON_SINGLE_USEDEP=${single_usedep}
- readonly PYTHON_DEPS PYTHON_REQUIRED_USE PYTHON_SINGLE_USEDEP
+ readonly PYTHON_DEPS PYTHON_REQUIRED_USE PYTHON_SINGLE_USEDEP \
+ PYTHON_USEDEP
fi
}
_python_single_set_globals
# to prevent accidental shell filename expansion.
#
# In order to enforce USE constraints on the packages, verbatim
-# '${PYTHON_SINGLE_USEDEP}' and '${PYTHON_MULTI_USEDEP}' (quoted!) may
+# '${PYTHON_SINGLE_USEDEP}' and '${PYTHON_USEDEP}' (quoted!) may
# be placed in the dependency specification. It will get expanded within
# the function into a proper USE dependency string.
#
# @CODE
# PYTHON_COMPAT=( python{2_7,3_{3,4}} pypy )
# RDEPEND="$(python_gen_cond_dep \
-# 'dev-python/unittest2[${PYTHON_MULTI_USEDEP}]' python2_7 pypy )"
+# 'dev-python/unittest2[${PYTHON_USEDEP}]' python2_7 pypy )"
# @CODE
#
# It will cause the variable to look like:
fi
local multi_usedep="python_targets_${impl}(-)"
+ local subdep=${dep//\$\{PYTHON_MULTI_USEDEP\}/${multi_usedep}}
matches+=( "python_single_target_${impl}? (
- ${dep//\$\{PYTHON_MULTI_USEDEP\}/${multi_usedep}} )" )
+ ${subdep//\$\{PYTHON_USEDEP\}/${multi_usedep}} )" )
fi
done
for impl in "${_PYTHON_SUPPORTED_IMPLS[@]}"; do
if _python_impl_matches "${impl}" "${@}"; then
local PYTHON_PKG_DEP
- python_export "${impl}" PYTHON_PKG_DEP
+ _python_export "${impl}" PYTHON_PKG_DEP
matches+=( "python_single_target_${impl}? ( ${PYTHON_PKG_DEP} )" )
fi
done
ewarn
ewarn "Dependencies won't be satisfied, and PYTHON_SINGLE_TARGET flags will be ignored."
- python_export "${impls[0]}" EPYTHON PYTHON
- python_wrapper_setup
+ _python_export "${impls[0]}" EPYTHON PYTHON
+ _python_wrapper_setup
+ einfo "Using ${EPYTHON} to build"
return
fi
die "More than one implementation in PYTHON_SINGLE_TARGET."
fi
- if ! use "python_targets_${impl}"; then
- eerror "The implementation chosen as PYTHON_SINGLE_TARGET must be added"
- eerror "to PYTHON_TARGETS as well. This is in order to ensure that"
- eerror "dependencies are satisfied correctly. We're sorry"
- eerror "for the inconvenience."
- echo
- die "Build target (${impl}) not in PYTHON_TARGETS."
- fi
-
- python_export "${impl}" EPYTHON PYTHON
- python_wrapper_setup
+ _python_export "${impl}" EPYTHON PYTHON
+ _python_wrapper_setup
+ einfo "Using ${EPYTHON} to build"
fi
done
eerror
eerror "${_PYTHON_SUPPORTED_IMPLS[@]}"
echo
- die "No supported Python implementation in PYTHON_SINGLE_TARGET/PYTHON_TARGETS."
+ die "No supported Python implementation in PYTHON_SINGLE_TARGET."
fi
}
projects / gentoo.git / blobdiff