From 47e0dff1a1db28ca1453850bf33c3d1d3c7667b9 Mon Sep 17 00:00:00 2001
From: Dimitri Papadopoulos
 <3234522+DimitriPapadopoulos@users.noreply.github.com>
Date: Tue, 17 Mar 2026 22:57:24 +0100
Subject: [PATCH 1/4] Apply ruff/refurb rule FURB122

Use of `file.write` in a for loop
---
 distutils/command/config.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/distutils/command/config.py b/distutils/command/config.py
index 9818418f..c8f37029 100644
--- a/distutils/command/config.py
+++ b/distutils/command/config.py
@@ -103,8 +103,7 @@ def _gen_temp_sourcefile(self, body, headers, lang):
         filename = "_configtest" + LANG_EXT[lang]
         with open(filename, "w", encoding='utf-8') as file:
             if headers:
-                for header in headers:
-                    file.write(f"#include <{header}>\n")
+                file.writelines(f"#include <{header}>\n" for header in headers)
                 file.write("\n")
             file.write(body)
             if body[-1] != "\n":

From c88ba090bb1f6946fb5740821acbe07233285e54 Mon Sep 17 00:00:00 2001
From: Dimitri Papadopoulos
 <3234522+DimitriPapadopoulos@users.noreply.github.com>
Date: Tue, 17 Mar 2026 22:58:42 +0100
Subject: [PATCH 2/4] Apply ruff/refurb rule FURB171

Membership test against single-item container
---
 distutils/dist.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/distutils/dist.py b/distutils/dist.py
index d2b257b2..fff99117 100644
--- a/distutils/dist.py
+++ b/distutils/dist.py
@@ -445,7 +445,7 @@ def parse_config_files(self, filenames=None):  # noqa: C901
                 try:
                     if alias:
                         setattr(self, alias, not strtobool(val))
-                    elif opt in ('verbose',):  # ugh!
+                    elif opt == 'verbose':
                         setattr(self, opt, strtobool(val))
                     else:
                         setattr(self, opt, val)

From 19bb2cc91f855eafe75de3d323ac7a8e85dfa3d2 Mon Sep 17 00:00:00 2001
From: Dimitri Papadopoulos
 <3234522+DimitriPapadopoulos@users.noreply.github.com>
Date: Tue, 17 Mar 2026 22:59:03 +0100
Subject: [PATCH 3/4] Apply ruff/refurb rule FURB188

Prefer `str.removesuffix()` over conditionally replacing with slice.
---
 distutils/tests/test_core.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/distutils/tests/test_core.py b/distutils/tests/test_core.py
index bad3fb7e..2f83162e 100644
--- a/distutils/tests/test_core.py
+++ b/distutils/tests/test_core.py
@@ -101,8 +101,7 @@ def test_run_setup_uses_current_dir(self, tmp_path):
         distutils.core.run_setup(setup_py)
 
         output = sys.stdout.getvalue()
-        if output.endswith("\n"):
-            output = output[:-1]
+        output = output.removesuffix("\n")
         assert cwd == output
 
     def test_run_setup_within_if_main(self, temp_file):

From f9e1fcc85b0422ca440724b3c581c7d5830d2b34 Mon Sep 17 00:00:00 2001
From: Dimitri Papadopoulos
 <3234522+DimitriPapadopoulos@users.noreply.github.com>
Date: Tue, 17 Mar 2026 23:01:02 +0100
Subject: [PATCH 4/4] Enforce ruff/refurb rules (FURB)

---
 ruff.toml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ruff.toml b/ruff.toml
index 06aa2304..46c2c23f 100644
--- a/ruff.toml
+++ b/ruff.toml
@@ -20,6 +20,7 @@ extend-select = [
 
 	# local
 	"B",
+	"FURB",
 	"ISC",
 	"PERF",
 	"RUF010",