From 68614c982dbabc5df548812dc457b182f0dbb07f Mon Sep 17 00:00:00 2001
From: "alexei.dolgolyov" <dolgolyov.alexei@gmail.com>
Date: Sat, 18 Apr 2026 19:49:09 +0300
Subject: [PATCH] fix(windows): keep required numpy submodules in build cleanup

lib, linalg, ma, polynomial, fft, ctypeslib, matrixlib are imported
unconditionally by numpy/__init__.py and must not be trimmed.
---
 build-common.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/build-common.sh b/build-common.sh
index a29f39a..1f9dd59 100644
--- a/build-common.sh
+++ b/build-common.sh
@@ -91,8 +91,11 @@ cleanup_site_packages() {
     find "$sp_dir" -name "*.pyi" -delete 2>/dev/null || true
     rm -rf "$sp_dir"/{pip,setuptools,pkg_resources,_distutils_hack}* 2>/dev/null || true
 
-    # Trim numpy if present
-    for mod in polynomial linalg ma lib distutils f2py typing _pyinstaller; do
+    # Trim numpy if present.
+    # Keep only modules that numpy/__init__.py does NOT import unconditionally —
+    # lib, linalg, ma, polynomial, fft, ctypeslib, matrixlib are all required for
+    # `import numpy` to succeed, so they MUST stay.
+    for mod in distutils f2py typing _pyinstaller; do
         rm -rf "$sp_dir/numpy/$mod" 2>/dev/null || true
     done