From 1b502c359f69e5a86b705bb18c7141cf4d5507f3 Mon Sep 17 00:00:00 2001
From: maziggy <mz@v8w.de>
Date: Wed, 10 Jun 2026 12:24:25 +0200
Subject: [PATCH]   fix(installer): bootstrap setuptools + wheel into embedded
 Python
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  get-pip.py installs only pip itself; the embedded Python distribution
  ships without setuptools or wheel. pip needs setuptools.build_meta as
  the PEP 517 build backend for any sdist-only package — Bambuddy's
  requirements.txt hits this on pyftpdlib 2.2.0 (sdist-only on PyPI).
  Install both right after the pip bootstrap so requirements.txt installs
  cleanly.
---
 installers/windows/build.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/installers/windows/build.py b/installers/windows/build.py
index f0a17583d..6e23ed969 100644
--- a/installers/windows/build.py
+++ b/installers/windows/build.py
@@ -116,6 +116,26 @@ def stage_embedded_python() -> Path:
         check=True,
     )
 
+    # Install setuptools + wheel. The embedded distribution ships without
+    # them, and get-pip.py installs only pip — but pip needs
+    # ``setuptools.build_meta`` (PEP 517 backend) to build any source-only
+    # package. Bambuddy's requirements.txt hits this with pyftpdlib 2.2.0
+    # which is sdist-only on PyPI; other source-only packages would fail
+    # the same way without this step.
+    log("installing setuptools + wheel for PEP 517 builds")
+    subprocess.run(
+        [
+            str(target / "python.exe"),
+            "-m",
+            "pip",
+            "install",
+            "--no-warn-script-location",
+            "setuptools",
+            "wheel",
+        ],
+        check=True,
+    )
+
     return target