I wrote support to the python eclass to make sure python version used to install has support for needed use flags. With current EAPIs I can't think of a way to do this without a pkg_setup check but feel free to surprise me.
Regards, Petteri
Index: python.eclass
===================================================================
RCS file: /var/cvsroot/gentoo-x86/eclass/python.eclass,v
retrieving revision 1.54
diff -u -r1.54 python.eclass
--- python.eclass 30 Oct 2008 05:21:46 -0000 1.54
+++ python.eclass 25 May 2009 20:47:37 -0000
@@ -14,8 +14,11 @@
if [[ -n "${NEED_PYTHON}" ]] ; then
- DEPEND=">=dev-lang/python-${NEED_PYTHON}"
+ PYTHON_ATOM=">=dev-lang/python-${NEED_PYTHON}"
+ DEPEND="${PYTHON_ATOM}"
RDEPEND="${DEPEND}"
+else
+ PYTHON_ATOM="dev-lang/python"
fi
__python_eclass_test() {
@@ -59,6 +62,78 @@
__python_version_extract $PYVER_ALL
}
+# @ECLASS-VARIABLE: PYTHON_USE_WITH
+# @DESCRIPTION:
+# Set this to a space separated list of use flags
+# the python slot in use must be built with.
+
+# @ECLASS-VARIABLE: PYTHON_USE_WITH_OR
+# @DESCRIPTION:
+# Set this to a space separated list of use flags
+# of which one must be turned on for the slot of
+# in use.
+
+# @ECLASS-VARIABLE: PYTHON_USE_WITH_OPT
+# @DESCRIPTION:
+# Set this if you need to make either PYTHON_USE_WITH or
+# PYTHON_USE_WITH_OR atoms conditional under a use flag.
+
+# @FUNCTION: python_pkg_setup
+# @DESCRIPTION:
+# Makes sure PYTHON_USE_WITH or PYTHON_USE_WITH_OR listed use flags
+# are respected. Only exported if one of those variables is set.
+if ! has ${EAPI} 0 1 && [[ -n ${PYTHON_USE_WITH} || -n ${PYTHON_USE_WITH_OR}
]]; then
+ python_pkg_setup_fail() {
+ eerror "${1}"
+ die "${1}"
+ }
+
+ python_pkg_setup() {
+ [[ ${PYTHON_USE_WITH_OPT} ]] && use !${PYTHON_USE_WITH_OPT} &&
return
+
+ python_version
+ local failed
+ local pyatom="dev-lang/python:${PYVER}"
+
+ for use in ${PYTHON_USE_WITH}; do
+ if ! has_version "${pyatom}[${use}]"; then
+ python_pkg_setup_fail \
+ "Please rebuild ${pyatom} with use
flags: ${PYTHON_USE_WITH}"
+ fi
+ done
+
+ for use in ${PYTHON_USE_WITH_OR}; do
+ if has_version "${pyatom}[${use}]"; then
+ return
+ fi
+ done
+
+ if [[ ${PYTHON_USE_WITH_OR} ]]; then
+ python_pkg_setup_fail \
+ "Please rebuild ${pyatom} with one of:
${PYTHON_USE_WITH_OR}"
+ fi
+ }
+
+ EXPORT_FUNCTIONS pkg_setup
+
+ if [[ ${PYTHON_USE_WITH} ]]; then
+ PYTHON_USE_WITH_ATOM="${PYTHON_ATOM}[${PYTHON_USE_WITH/ /,}]"
+ elif [[ ${PYTHON_USE_WITH_OR} ]]; then
+ PYTHON_USE_WITH_ATOM="|| ( "
+ for use in ${PYTHON_USE_WITH_OR}; do
+ PYTHON_USE_WITH_ATOM="
+ ${PYTHON_USE_WITH_ATOM}
+ ${PYTHON_ATOM}[${use}]"
+ done
+ PYTHON_USE_WITH_ATOM="${PYTHON_USE_WITH_ATOM} )"
+ fi
+ if [[ ${PYTHON_USE_WITH_OPT} ]]; then
+ PYTHON_USE_WITH_ATOM="${PYTHON_USE_WITH_OPT}? (
${PYTHON_USE_WITH_ATOM} )"
+ fi
+ DEPEND="${PYTHON_USE_WITH_ATOM}"
+ RDEPEND="${PYTHON_USE_WITH_ATOM}"
+fi
+
# @FUNCTION: python_disable_pyc
# @DESCRIPTION:
# Tells python not to automatically recompile modules to .pyc/.pyo
signature.asc
Description: OpenPGP digital signature
