distutils-r1.eclass: Support backend-path in pyproject.toml

Signed-off-by: Michał Górny <[email protected]>
johu · Apr 2, 2022 · c8b8dc1 · c8b8dc1
1 parent 85820b0
commit c8b8dc1
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/eclass/distutils-r1.eclass b/eclass/distutils-r1.eclass
@@ -1015,8 +1015,15 @@ distutils_pep517_install() {
  einfo " Building the wheel for ${PWD#${WORKDIR}/} via ${build_backend}"
  local wheel=$(
  "${EPYTHON}" - 3>&1 >&2 <<-EOF || die "Wheel build failed"
- import ${build_backend%:*}
  import os
+ import sys
+ import tomli
+
+ sys.path[:0] = (tomli.load(open("pyproject.toml", "rb"))
+ .get("build-system", {})
+ .get("backend-path", []))
+
+ import ${build_backend%:*}
  print(${build_backend/:/.}.build_wheel(os.environ['WHEEL_BUILD_DIR']),
  file=os.fdopen(3, 'w'))
  EOF