[gentoo-dev] [PATCH 7/8] distutils-r1.eclass: Add python_get_stdlib helper function

[James Le Cuirot]

This is just like python_get_sitedir, but it returns the stdlib
directory such as /usr/lib/python3.12. This is useful for locating the
sysconfigdata file.

Signed-off-by: James Le Cuirot <ch...@gentoo.org>
---
 eclass/python-utils-r1.eclass | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/eclass/python-utils-r1.eclass b/eclass/python-utils-r1.eclass
index c47565fa1db2a..b544f52312880 100644
--- a/eclass/python-utils-r1.eclass
+++ b/eclass/python-utils-r1.eclass
@@ -332,6 +332,17 @@ _python_export() {
                                export 
PYTHON=${BROOT-${EPREFIX}}/usr/bin/${impl}
                                debug-print "${FUNCNAME}: PYTHON = ${PYTHON}"
                                ;;
+                       PYTHON_STDLIB)
+                               [[ -n ${PYTHON} ]] || die "PYTHON needs to be 
set for ${var} to be exported, or requested before it"
+                               PYTHON_STDLIB=$(
+                                       "${PYTHON}" - "${EPREFIX}/usr" <<-EOF 
|| die
+                                               import sys, sysconfig
+                                               
print(sysconfig.get_path("stdlib", vars={"installed_base": sys.argv[1]}))
+                                       EOF
+                               )
+                               export PYTHON_STDLIB
+                               debug-print "${FUNCNAME}: PYTHON_STDLIB = 
${PYTHON_STDLIB}"
+                               ;;
                        PYTHON_SITEDIR)
                                [[ -n ${PYTHON} ]] || die "PYTHON needs to be 
set for ${var} to be exported, or requested before it"
                                PYTHON_SITEDIR=$(
@@ -466,6 +477,18 @@ _python_export() {
        done
 }

+# @FUNCTION: python_get_stdlib
+# @USAGE: [<impl>]
+# @DESCRIPTION:
+# Obtain and print the 'stdlib' path for the given implementation. If no
+# implementation is provided, ${EPYTHON} will be used.
+python_get_stdlib() {
+       debug-print-function ${FUNCNAME} "${@}"
+
+       _python_export "${@}" PYTHON_STDLIB
+       echo "${PYTHON_STDLIB}"
+}
+
 # @FUNCTION: python_get_sitedir
 # @USAGE: [<impl>]
 # @DESCRIPTION:
--
2.45.2