commit: 4a1560e50bfa935eacec648af6310dd914ff2489
Author: Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Sat Dec 12 22:21:11 2015 +0000
Commit: Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Tue Dec 22 22:12:23 2015 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=4a1560e5
python-single-r1.eclass: Support PYTHON_COMPAT_OVERRIDE
eclass/python-single-r1.eclass | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/eclass/python-single-r1.eclass b/eclass/python-single-r1.eclass
index 4c4f057..4d5026f 100644
--- a/eclass/python-single-r1.eclass
+++ b/eclass/python-single-r1.eclass
@@ -96,6 +96,25 @@ if [[ ! ${_PYTHON_SINGLE_R1} ]]; then
# PYTHON_COMPAT=( python2_7 python3_{3,4} )
# @CODE
+# @ECLASS-VARIABLE: PYTHON_COMPAT_OVERRIDE
+# @INTERNAL
+# @DESCRIPTION:
+# This variable can be used when working with ebuilds to override
+# the in-ebuild PYTHON_COMPAT. It is a string naming the implementation
+# which package will be built for. It needs to be specified
+# in the calling environment, and not in ebuilds.
+#
+# 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.
+#
+# Example:
+# @CODE
+# PYTHON_COMPAT_OVERRIDE='pypy' emerge -1v dev-python/bar
+# @CODE
+
# @ECLASS-VARIABLE: PYTHON_REQ_USE
# @DEFAULT_UNSET
# @DESCRIPTION:
@@ -401,6 +420,23 @@ python_setup() {
unset EPYTHON
+ # support developer override
+ if [[ ${PYTHON_COMPAT_OVERRIDE} ]]; then
+ local impls=( ${PYTHON_COMPAT_OVERRIDE} )
+ [[ ${#impls[@]} -eq 1 ]] || die "PYTHON_COMPAT_OVERRIDE must
name exactly one implementation for python-single-r1"
+
+ ewarn "WARNING: PYTHON_COMPAT_OVERRIDE in effect. The following
Python"
+ ewarn "implementation will be used:"
+ ewarn
+ ewarn " ${PYTHON_COMPAT_OVERRIDE}"
+ ewarn
+ ewarn "Dependencies won't be satisfied, and
PYTHON_SINGLE_TARGET flags will be ignored."
+
+ python_export "${impls[0]}" EPYTHON PYTHON
+ python_wrapper_setup
+ return
+ fi
+
if [[ ${#_PYTHON_SUPPORTED_IMPLS[@]} -eq 1 ]]; then
if use "python_targets_${_PYTHON_SUPPORTED_IMPLS[0]}"; then
# Only one supported implementation, enable it
explicitly
