Migrating from appdirs to platformdirs (Closes: #1067983).

Signed-off-by: Daniel Baumann <daniel@debian.org>

debian/patches/debian/0001-platformdirs.patch

@@ -0,0 +1,53 @@
+Author: Daniel Baumann <daniel.baumann@progress-linux.org>
+Description: Migrating from appdirs to platformdirs (Closes: #1067983).
+
+diff -Naurp ptpython.orig/README.rst ptpython/README.rst
+--- ptpython.orig/README.rst
++++ ptpython/README.rst
+@@ -201,8 +201,8 @@ Configuration
+ *************
+ 
+ It is possible to create a ``config.py`` file to customize configuration.
+-ptpython will look in an appropriate platform-specific directory via `appdirs
+-<https://pypi.org/project/appdirs/>`. See the ``appdirs`` documentation for the
++ptpython will look in an appropriate platform-specific directory via `platformdirs
++<https://pypi.org/project/platformdirs/>`. See the ``platformdirs`` documentation for the
+ precise location for your platform. A ``PTPYTHON_CONFIG_HOME`` environment
+ variable, if set, can also be used to explicitly override where configuration
+ is looked for.
+diff -Naurp ptpython.orig/ptpython/entry_points/run_ptpython.py ptpython/ptpython/entry_points/run_ptpython.py
+--- ptpython.orig/ptpython/entry_points/run_ptpython.py
++++ ptpython/ptpython/entry_points/run_ptpython.py
+@@ -32,7 +32,7 @@ import sys
+ from textwrap import dedent
+ from typing import IO
+ 
+-import appdirs
++import platformdirs
+ from prompt_toolkit.formatted_text import HTML
+ from prompt_toolkit.shortcuts import print_formatted_text
+ 
+@@ -106,9 +106,9 @@ def get_config_and_history_file(namespac
+     """
+     config_dir = os.environ.get(
+         "PTPYTHON_CONFIG_HOME",
+-        appdirs.user_config_dir("ptpython", "prompt_toolkit"),
++        platformdirs.user_config_dir("ptpython", "prompt_toolkit"),
+     )
+-    data_dir = appdirs.user_data_dir("ptpython", "prompt_toolkit")
++    data_dir = platformdirs.user_data_dir("ptpython", "prompt_toolkit")
+ 
+     # Create directories.
+     for d in (config_dir, data_dir):
+diff -Naurp ptpython.orig/setup.py ptpython/setup.py
+--- ptpython.orig/setup.py
++++ ptpython/setup.py
+@@ -18,7 +18,7 @@ setup(
+     packages=find_packages("."),
+     package_data={"ptpython": ["py.typed"]},
+     install_requires=[
+-        "appdirs",
++        "platformdirs",
+         "importlib_metadata;python_version<'3.8'",
+         "jedi>=0.16.0",
+         # Use prompt_toolkit 3.0.34, because of `OneStyleAndTextTuple` import.

debian/patches/series

@@ -0,0 +1 @@
+debian/0001-platformdirs.patch