From bc69cb503d4a70df1f12ea9fad63366ed6f62b3c Mon Sep 17 00:00:00 2001
From: Ben Siraphob <bensiraphob@gmail.com>
Date: Wed, 19 Nov 2025 21:53:15 -0800
Subject: [PATCH] setuptools: fix WHEEL file reproducibility by hardcoding
 version

---
 .../python-modules/setuptools/default.nix           |  8 ++++++++
 .../setuptools/reproducible-wheel.patch             | 13 +++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 pkgs/development/python-modules/setuptools/reproducible-wheel.patch

diff --git a/pkgs/development/python-modules/setuptools/default.nix b/pkgs/development/python-modules/setuptools/default.nix
index 14448351f538..657d23f35073 100644
--- a/pkgs/development/python-modules/setuptools/default.nix
+++ b/pkgs/development/python-modules/setuptools/default.nix
@@ -19,9 +19,17 @@ buildPythonPackage rec {
     hash = "sha256-s/gfJc3yxvCE6cjP03vtIZqNFmoZKR3d7+4gTPk1hQg=";
   };
 
+  patches = [
+    ./reproducible-wheel.patch
+  ];
+
   # Drop dependency on coherent.license, which in turn requires coherent.build
   postPatch = ''
     sed -i "/coherent.licensed/d" pyproject.toml
+
+    # Substitute version for reproducible builds
+    substituteInPlace setuptools/version.py \
+      --replace-fail '@version@' '${version}'
   '';
 
   preBuild = lib.optionalString (!stdenv.hostPlatform.isWindows) ''
diff --git a/pkgs/development/python-modules/setuptools/reproducible-wheel.patch b/pkgs/development/python-modules/setuptools/reproducible-wheel.patch
new file mode 100644
index 000000000000..8b2e1881d089
--- /dev/null
+++ b/pkgs/development/python-modules/setuptools/reproducible-wheel.patch
@@ -0,0 +1,13 @@
+diff --git a/setuptools/version.py b/setuptools/version.py
+--- a/setuptools/version.py
++++ b/setuptools/version.py
+@@ -1,6 +1,3 @@
+-from ._importlib import metadata
+-
+-try:
+-    __version__ = metadata.version('setuptools') or '0.dev0+unknown'
+-except Exception:
+-    __version__ = '0.dev0+unknown'
++# Hardcoded for reproducible builds
++# This avoids runtime metadata queries that can vary between builds
++__version__ = '@version@'