https://bugs.gentoo.org/952556#c3

From a8b6f6bb34864a6821174edbf7802b689e440db3 Mon Sep 17 00:00:00 2001
From: LuK1337 <priv.luk@gmail.com>
Date: Wed, 23 Aug 2023 17:13:23 +0200
Subject: [PATCH] Fix startup on Python 3.12

--- a/quodlibet/_import.py
+++ b/quodlibet/_import.py
@@ -8,6 +8,7 @@
 
 import sys
 import importlib
+import importlib.util
 
 
 class RedirectImportHook:
@@ -31,6 +32,11 @@ def __init__(self, name, packages):
         self._name = name
         self._packages = packages
 
+    def find_spec(self, fullname, path, target=None):
+        loader = self.find_module(fullname, path)
+        if loader is not None:
+            return importlib.util.spec_from_loader(fullname, loader)
+
     def find_module(self, fullname, path=None):
         package = fullname.split(".")[0]
         if package in self._packages:
--- a/quodlibet/util/config.py
+++ b/quodlibet/util/config.py
@@ -377,7 +377,7 @@ def read(self, filename):
             with open(filename, "rb") as fileobj:
                 fileobj = StringIO(
                     fileobj.read().decode("utf-8", "surrogateescape"))
-                self._config.readfp(fileobj, filename)
+                self._config.read_file(fileobj, filename)
         except (IOError, OSError):
             return
 
--- a/quodlibet/util/importhelper.py
+++ b/quodlibet/util/importhelper.py
@@ -92,8 +92,8 @@ def load_module(name, package, path):
     except KeyError:
         pass
 
-    loader = importlib.find_loader(fullname, [path])
-    if loader is None:
+    spec = importlib.machinery.PathFinder.find_spec(fullname, [path])
+    if spec is None:
         return
 
     # modules need a parent package
@@ -101,7 +101,7 @@ def load_module(name, package, path):
         spec = importlib.machinery.ModuleSpec(package, None, is_package=True)
         sys.modules[package] = importlib.util.module_from_spec(spec)
 
-    mod = loader.load_module(fullname)
+    mod = spec.loader.load_module(fullname)
 
     # make it accessible from the parent, like __import__ does
     vars(sys.modules[package])[name] = mod

--- a/quodlibet/util/__init__.py
+++ b/quodlibet/util/__init__.py
@@ -961,7 +961,7 @@
 
         try:
             return load_func(dlopen_name), name
-        except OSError as e:
+        except (OSError, AttributeError) as e:
             errors.append(str(e))
 
     raise OSError("\n".join(errors))