From f26cb34155574966bc053087a2fc68034b40663c Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=B6rg=20Behrmann?= <behrmann@physik.fu-berlin.de>
Date: Thu, 2 Oct 2025 10:01:36 +0200
Subject: [PATCH] log: set terminal window title in complete_step while mkosi
 runs

---
 mkosi/__main__.py |  4 ++--
 mkosi/log.py      | 20 +++++++++++++++++++-
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/mkosi/__main__.py b/mkosi/__main__.py
index 23dc53407..57c082b69 100644
--- a/mkosi/__main__.py
+++ b/mkosi/__main__.py
@@ -10,7 +10,7 @@ from typing import Optional
 import mkosi.resources
 from mkosi import run_verb
 from mkosi.config import parse_config
-from mkosi.log import log_setup
+from mkosi.log import log_setup, stash_terminal_title
 from mkosi.run import find_binary, run, uncaught_exception_handler
 from mkosi.util import resource_path
 
@@ -34,7 +34,7 @@ def main() -> None:
 
     log_setup()
 
-    with resource_path(mkosi.resources) as resources:
+    with resource_path(mkosi.resources) as resources, stash_terminal_title():
         args, tools, images = parse_config(sys.argv[1:], resources=resources)
 
         if args.debug:
diff --git a/mkosi/log.py b/mkosi/log.py
index 55a3e850f..8c4471e19 100644
--- a/mkosi/log.py
+++ b/mkosi/log.py
@@ -8,7 +8,7 @@ import sys
 from collections.abc import Iterator
 from typing import Any, NoReturn, Optional
 
-from mkosi.sandbox import Style
+from mkosi.sandbox import Style, terminal_is_dumb
 
 # This global should be initialized after parsing arguments
 ARG_DEBUG = contextvars.ContextVar("debug", default=False)
@@ -32,8 +32,12 @@ def log_step(text: str) -> None:
         # De-emphasize this step here, so the user can tell more
         # easily which step generated the exception. The exception
         # or error will only be printed after we finish cleanup.
+        if not terminal_is_dumb():
+            print(f"\033]0;mkosi: {text}", file=sys.stderr)
         logging.info(f"{prefix}({text})")
     else:
+        if not terminal_is_dumb():
+            print(f"\033]0;mkosi: {text}", file=sys.stderr)
         logging.info(f"{prefix}{Style.bold}{text}{Style.reset}")
 
 
@@ -85,3 +89,17 @@ def log_setup(default_log_level: str = "info") -> None:
     logging.getLogger().setLevel(
         logging.getLevelName(os.getenv("SYSTEMD_LOG_LEVEL", default_log_level).upper())
     )
+
+
+@contextlib.contextmanager
+def stash_terminal_title() -> Iterator[None]:
+    try:
+        # push terminal window title to stack
+        if not terminal_is_dumb():
+            print("\033[22t", file=sys.stderr)
+
+        yield
+    finally:
+        # pop terminal window title from stack to reset
+        if not terminal_is_dumb():
+            print("\033[23t", file=sys.stderr)
-- 
2.47.3