From 7e69650f2cc4fa76bad8850794d65117386cfbea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sandro=20J=C3=A4ckel?= <sandro.jaeckel@gmail.com>
Date: Sun, 5 Jul 2026 21:40:42 +0200
Subject: [PATCH 1/2] python314Packages.mpv: fix build

python3.13-mpv> 3.534 [v] vo/x11: Assuming -nan FPS for display sync.
python3.13-mpv> ----------------------------- Captured stderr call -----------------------------
python3.13-mpv> Fontconfig error: Cannot load default config file: No such file: (null)
python3.13-mpv> Fontconfig error: Cannot load default config file: No such file: (null)
python3.13-mpv>
python3.13-mpv> Fontconfig error: No writable cache directories
python3.13-mpv>         /var/cache/fontconfig
python3.13-mpv>         /homeless-shelter/.cache/fontconfig
python3.13-mpv>
python3.13-mpv> Fontconfig error: No writable cache directories
python3.13-mpv>         /var/cache/fontconfig
python3.13-mpv>         /homeless-shelter/.cache/fontconfig
---
 pkgs/development/python-modules/mpv/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/python-modules/mpv/default.nix b/pkgs/development/python-modules/mpv/default.nix
index 892f0726382c..54a9cb4e80cb 100644
--- a/pkgs/development/python-modules/mpv/default.nix
+++ b/pkgs/development/python-modules/mpv/default.nix
@@ -7,6 +7,7 @@
   setuptools,
   pytestCheckHook,
   pyvirtualdisplay,
+  writableTmpDirAsHomeHook,
   xvfb,
 }:
 
@@ -35,6 +36,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     pytestCheckHook
     pyvirtualdisplay
+    writableTmpDirAsHomeHook
   ]
   ++ lib.optionals stdenv.hostPlatform.isLinux [
     xvfb

From 75c7b99953053146f20b66912af80b7936ef3aaf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sandro=20J=C3=A4ckel?= <sandro.jaeckel@gmail.com>
Date: Mon, 6 Jul 2026 21:44:10 +0200
Subject: [PATCH 2/2] python314Packages.mpv: ignore some flaky or timing
 sensitive tests

---
 pkgs/development/python-modules/mpv/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/python-modules/mpv/default.nix b/pkgs/development/python-modules/mpv/default.nix
index 54a9cb4e80cb..e914fb4c02da 100644
--- a/pkgs/development/python-modules/mpv/default.nix
+++ b/pkgs/development/python-modules/mpv/default.nix
@@ -42,6 +42,15 @@ buildPythonPackage rec {
     xvfb
   ];
 
+  disabledTestPaths = [
+    # timing sensitive
+    "tests/test_mpv.py::CommandTests::test_sub_add"
+
+    # flaky
+    "tests/test_mpv.py::ObservePropertyTest::test_property_observer_decorator"
+    "tests/test_mpv.py::RegressionTests::test_wait_for_property_concurrency"
+  ];
+
   pythonImportsCheck = [ "mpv" ];
 
   meta = {