[gentoo-dev] [PATCH v2 4/5] distutils-r1.eclass: wire up meson-python to meson.eclass

[Eli Schwartz <eschwartz93@gmail.com>]

The meson-python build backend -- as the name suggests -- uses meson
under the hood. We have a meson eclass which does lots of useful things
pertinent to meson. Make sure it gets invoked, by prying out the options
that meson_src_configure would use and setting passing them as our seed
values for gpep517.

Signed-off-by: Eli Schwartz <eschwartz93@gmail.com>
---

v2: call setup_meson_src_configure instead of meson_src_configure. This
avoids running `meson setup` twice, and guarantees we use whatever
settings the PEP517 backend requires. In particular, it respects numpy's
vendored meson fork with experimental new features.

 eclass/distutils-r1.eclass | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/eclass/distutils-r1.eclass b/eclass/distutils-r1.eclass
index c0d1992ccce0..a42adc182ed9 100644
--- a/eclass/distutils-r1.eclass
+++ b/eclass/distutils-r1.eclass
@@ -197,6 +197,10 @@ _DISTUTILS_R1_ECLASS=1
 inherit flag-o-matic
 inherit multibuild multilib multiprocessing ninja-utils toolchain-funcs
 
+if [[ ${DISTUTILS_USE_PEP517} = meson-python ]]; then
+	inherit meson
+fi
+
 if [[ ! ${DISTUTILS_SINGLE_IMPL} ]]; then
 	inherit python-r1
 else
@@ -1386,9 +1390,11 @@ distutils_pep517_install() {
 			)
 			;;
 		meson-python)
+			local mesonargs=()
+			setup_meson_src_configure "${DISTUTILS_ARGS[@]}"
 			local -x NINJAOPTS=$(get_NINJAOPTS)
 			config_settings=$(
-				"${EPYTHON}" - "${DISTUTILS_ARGS[@]}" <<-EOF || die
+				"${EPYTHON}" - "${mesonargs[@]}" <<-EOF || die
 					import json
 					import os
 					import shlex
-- 
2.43.0