python3Packages.boxx: fix build, remove outdated dependency

pkgs/development/python-modules/boxx/default.nix

@@ -2,15 +2,12 @@
   lib,
   buildPythonPackage,
   fetchPypi,
-  python,
-  xvfb-run,
   matplotlib,
   scikit-image,
   numpy,
   pandas,
   imageio,
   snakeviz,
-  fn,
   pyopengl,
   seaborn,
   torch,
@@ -37,21 +34,29 @@ buildPythonPackage rec {
     pandas
     imageio
     snakeviz
-    fn
     pyopengl
     seaborn
   ];
 
   nativeCheckInputs = [
-    xvfb-run
     torch
     torchvision
   ];
 
   pythonImportsCheck = [ "boxx" ];
 
+  # The tests are just a bunch of files with code in them (yikes)
+  # intead of normal classes/functions representing test cases.
+  # Standard test discovery mechanisms in unittest/pytest complain
+  # that no tests were discovered, so we run the files manually.
   checkPhase = ''
-    xvfb-run ${python.interpreter} -m unittest
+    export MPLCONFIGDIR=$(mktemp -d)
+    TESTS=$(find test -type f -name '*.py' | sed 's|test/\([^.]*\).py|\1|g')
+    touch test/__init__.py
+    for test in $TESTS; do
+      echo "Running test "$test"..."
+      python -m test.$test
+    done
   '';
 
   meta = with lib; {

pkgs/development/python-modules/bpycv/default.nix

@@ -48,7 +48,10 @@ buildPythonPackage rec {
           };
         }
         ''
-          ${blender.withPackages (ps: [ ps.bpycv ])}/bin/blender-wrapped -b -P ${./bpycv-test.py}
+          ${blender.withPackages (ps: [ ps.bpycv ])}/bin/blender-wrapped \
+            --background \
+            --python ${./bpycv-test.py} \
+            --python-exit-code 42
         '';
   };
 

pkgs/top-level/python-aliases.nix

@@ -238,6 +238,7 @@ mapAliases ({
   flufl_bounce = flufl-bounce; # added 2023-11-03
   flufl_i18n = flufl-i18n; # added 2023-11-03
   flufl_lock = flufl-lock; # added 2023-11-03
+  fn = throw "fn was removed, as it is no longer used by any package in nixpkgs, it is not compatible with python 3.11 or newer and it was last updated in 2014."; # added 2025-02-08
   forbiddenfruit = throw "forbiddenfruit has been removed, because it was unmaintained and relied on the nose test framework"; # added 2024-07-08
   FormEncode = formencode; # added 2023-02-19
   foundationdb51 = throw "foundationdb51 is no longer maintained, use foundationdb71 instead"; # added 2023-06-06

pkgs/top-level/python-packages.nix

@@ -4867,8 +4867,6 @@ self: super: with self; {
 
   flynt = callPackage ../development/python-modules/flynt { };
 
-  fn = callPackage ../development/python-modules/fn { };
-
   fnv-hash-fast = callPackage ../development/python-modules/fnv-hash-fast { };
 
   fnvhash = callPackage ../development/python-modules/fnvhash { };