From b9da3cb2236df05834148bd756bf860e990f056a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jelmer=20Vernoo=C4=B3?= <jelmer@jelmer.uk>
Date: Mon, 22 Mar 2021 01:51:54 +0000
Subject: [PATCH] Preserve SETUPTOOLS_SCM_PRETEND_VERSION.

---
 ognibuild/buildsystem.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/ognibuild/buildsystem.py b/ognibuild/buildsystem.py
index 57c294d..e351d0b 100644
--- a/ognibuild/buildsystem.py
+++ b/ognibuild/buildsystem.py
@@ -352,10 +352,16 @@ class SetupPy(BuildSystem):
         install_missing_reqs(session, resolver, list(self._setup_requires()))
         interpreter = shebang_binary(os.path.join(self.path, 'setup.py'))
         if interpreter is not None:
-            run_with_build_fixers(session, ["./setup.py"] + args, fixers)
+            argv = ["./setup.py"] + args
         else:
             # Just assume it's Python 3
-            run_with_build_fixers(session, [self.DEFAULT_PYTHON, "./setup.py"] + args, fixers)
+            argv = [self.DEFAULT_PYTHON, "./setup.py"] + args
+        env = {}
+        # Inherit SETUPTOOLS_SCM_PRETEND_VERSION from the current environment
+        if 'SETUPTOOLS_SCM_PRETEND_VERSION' in os.environ:
+            env['SETUPTOOLS_SCM_PRETEND_VERSION'] = (
+                os.environ['SETUPTOOLS_SCM_PRETEND_VERSION'])
+        run_with_build_fixers(session, argv, fixers, env=env)
 
     def _setup_requires(self):
         if self.pyproject: