--- portage-9999/lib/portage/util/env_update.py.orig	2021-03-21 01:19:39.384029753 +0800
+++ portage-9999/lib/portage/util/env_update.py	2021-03-21 01:21:06.601028402 +0800
@@ -21,6 +21,7 @@
 from portage.util.listdir import listdir
 from portage.dbapi.vartree import vartree
 from portage.package.ebuild.config import config
+from portage.process import spawn
 
 
 def env_update(makelinks=1, target_root=None, prev_mtimes=None, contents=None,
@@ -389,3 +390,19 @@
 	for x in env_keys:
 		outfile.write("setenv %s '%s'\n" % (x, env[x]))
 	outfile.close()
+
+	# execute +x scripts in /etc/env-update.d/
+	env_update_d_dir = os.path.join(eroot, "etc", "env-update.d")
+	ensure_dirs(env_update_d_dir, mode=0o755)
+	fns = listdir(env_update_d_dir, EmptyOnError=1)
+	fns.sort()
+	for x in fns:
+		if len(x) < 3:
+			continue
+		if not x[0].isdigit() or not x[1].isdigit():
+			continue
+		if x.startswith(".") or x.endswith("~") or x.endswith(".bak"):
+			continue
+		x = os.path.join(env_update_d_dir, x)
+		if os.access(x, os.X_OK):
+			spawn(x)