From f9c5b550c2ff7116bb39783f34820754a11c016b Mon Sep 17 00:00:00 2001
From: Guillaume Girol <symphorien+git@xlumurb.eu>
Date: Sat, 8 Apr 2023 12:00:00 +0000
Subject: [PATCH] sane_backends: disable parallel install

parallel install creates a bad symlink at $out/lib/sane/libsane.so.1
which prevents finding plugins.

Fixes https://github.com/NixOS/nixpkgs/issues/224569
---
 pkgs/applications/graphics/sane/backends/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/applications/graphics/sane/backends/default.nix b/pkgs/applications/graphics/sane/backends/default.nix
index 5571585e32d9..1dc46e1b5ebe 100644
--- a/pkgs/applications/graphics/sane/backends/default.nix
+++ b/pkgs/applications/graphics/sane/backends/default.nix
@@ -128,6 +128,10 @@ stdenv.mkDerivation {
   ''
   + lib.concatStrings (builtins.map installFirmware compatFirmware);
 
+  # parallel install creates a bad symlink at $out/lib/sane/libsane.so.1 which prevents finding plugins
+  # https://github.com/NixOS/nixpkgs/issues/224569
+  enableParallelInstalling = false;
+
   meta = with lib; {
     description = "SANE (Scanner Access Now Easy) backends";
     longDescription = ''