From 0def71383414c4e0e52adbcf58230e79dee83be0 Mon Sep 17 00:00:00 2001
From: phanirithvij <phanirithvij2000@gmail.com>
Date: Mon, 27 Jul 2026 15:40:45 +0530
Subject: [PATCH] kicadAddons.kikit: fix build

Signed-off-by: phanirithvij <phanirithvij2000@gmail.com>
(cherry picked from commit 609bc044979e1016a8ad6af4b649857be69284b9)
---
 pkgs/by-name/ki/kikit/default.nix | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/pkgs/by-name/ki/kikit/default.nix b/pkgs/by-name/ki/kikit/default.nix
index 9e9e61ca60d3..eceeb96bb7da 100644
--- a/pkgs/by-name/ki/kikit/default.nix
+++ b/pkgs/by-name/ki/kikit/default.nix
@@ -86,9 +86,21 @@ buildPythonApplication (finalAttrs: {
   ];
 
   # Recreate _version.py, deleted at fetch time due to non-reproducibility.
-  # should be done in postInstall to overwrite what versioneer generates again during the build phase
-  postInstall = ''
-    echo 'def get_versions(): return {"version": "${finalAttrs.version}"}' > $out/${python.sitePackages}/kikit/_version.py
+  # Must include version_json block because versioneer uses regex parsing on this file.
+  postPatch = ''
+    cat > kikit/_version.py <<'EOF'
+    # DO NOT EDIT! nixpkgs GENERATED FILE
+    import json
+
+    version_json = ''''
+    {
+     "version": "${finalAttrs.version}"
+    }
+    ''''  # END VERSION_JSON
+
+    def get_versions():
+        return json.loads(version_json)
+    EOF
   '';
 
   preCheck = ''