From 42610a888a28f61e17f4b736f37a6025b2e63612 Mon Sep 17 00:00:00 2001
From: Antti Kaihola <13725+akaihola@users.noreply.github.com>
Date: Thu, 8 Aug 2024 23:24:34 +0300
Subject: [PATCH 1/2] fix: windows py38/py39 relative path issue

---
 src/darker/__main__.py | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/darker/__main__.py b/src/darker/__main__.py
index 252e74a7b..195d5f78a 100644
--- a/src/darker/__main__.py
+++ b/src/darker/__main__.py
@@ -52,7 +52,7 @@
 from darkgraylib.highlighting import colorize, should_use_color
 from darkgraylib.log import setup_logging
 from darkgraylib.main import resolve_paths
-from darkgraylib.utils import GIT_DATEFORMAT, DiffChunk, TextDocument
+from darkgraylib.utils import GIT_DATEFORMAT, WINDOWS, DiffChunk, TextDocument
 from graylint.linting import run_linters
 
 logger = logging.getLogger(__name__)
@@ -561,9 +561,18 @@ def main(  # noqa: C901,PLR0912,PLR0915
             msg = f"Path(s) {missing_reprs} do not exist in {rev2_repr}"
             raise FileNotFoundError(msg)
 
+    common_root_ = (
+        # On Windows, Python <= 3.9 requires the `filter_python_files` `root` argument
+        # to be an absolute path. Remove this after dropping support for Python 3.9.
+        # See https://github.com/python/cpython/issues/82852
+        common_root.resolve()
+        if WINDOWS and sys.version_info < (3, 10)
+        else common_root
+    )
     # These paths are relative to `common_root`:
-    files_to_process = filter_python_files(paths, common_root, {})
-    files_to_blacken = filter_python_files(paths, common_root, black_config)
+    files_to_process = filter_python_files(paths, common_root_, {})
+    files_to_blacken = filter_python_files(paths, common_root_, black_config)
+
     # Now decide which files to reformat (Black & isort). Note that this doesn't apply
     # to linting.
     if output_mode == OutputMode.CONTENT or revrange.rev2 == STDIN:

From b60ff62742907199f9585e7fb20f819bb2cd575c Mon Sep 17 00:00:00 2001
From: Antti Kaihola <13725+akaihola@users.noreply.github.com>
Date: Tue, 27 Aug 2024 23:47:46 +0300
Subject: [PATCH 2/2] docs: update the change log

---
 CHANGES.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGES.rst b/CHANGES.rst
index 141a7510d..a5fd39f27 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -23,6 +23,8 @@ Fixed
 - Pass Graylint version to `~darkgraylib.command_line.make_argument_parser` to make
   ``--version`` display the correct version number.
 - Pass full environment to Git to avoid the "dubious ownership" error.
+- Work around a `pathlib.Path.resolve` bug in Python 3.8 and 3.9 on Windows.
+  The work-around should be removed when Python 3.8 and 3.9 are no longer supported.
 
 
 2.1.1_ - 2024-04-16