[packaging/craftmaster] /: craftmaster: add command line option --determine-package

Git commit db6814621b9d53de34b40bc00e16cc1ed64612ab by Ralf Habacker.
Committed on 22/07/2026 at 16:16.
Pushed by habacker into branch 'master'.

craftmaster: add command line option --determine-package

M  +17   -2    CraftMaster.py
M  +20   -2    tests/test_craftmaster.py

https://invent.kde.org/packaging/craftmaster/-/commit/db6814621b9d53de34b40bc00e16cc1ed64612ab

diff --git a/CraftMaster.py b/CraftMaster.py
index aa5d98b..408e63d 100644
--- a/CraftMaster.py
+++ b/CraftMaster.py
@@ -31,7 +31,6 @@ class CraftMaster(object):
         self.targets = set(targets) if targets else set()
         self.verbose = verbose
         self.doSetup = setup
-        self._setDefaultCraftPackage()
         self._setConfig([Path(x).absolute() for x in configFiles], variables)
 
     # https://stackoverflow.com/a/1214935
@@ -367,9 +366,13 @@ if __name__ == "__main__":
     parser.add_argument(
         "--config",
         action="store",
-        required=True,
         help="The path to the configuration file.",
     )
+    parser.add_argument(
+        "--determine-package",
+        action="store_true",
+        help="Print the package name determined from CRAFT_PACKAGE or CI titles.",
+    )
     parser.add_argument(
         "--setup",
         action="store_true",
@@ -401,6 +404,18 @@ if __name__ == "__main__":
     )
 
     args = parser.parse_args()
+    if args.determine_package:
+        master = CraftMaster.__new__(CraftMaster)
+        master.verbose = args.verbose
+        master._setDefaultCraftPackage()
+
+        if "CRAFT_PACKAGE" not in os.environ:
+            master._error("Aborting because the package name is required")
+
+        print(os.environ["CRAFT_PACKAGE"])
+        exit(0)
+    if not args.config:
+        parser.error("--config is required unless --determine-package is used")
     configs = [args.config]
     configs += args.config_override
     master = CraftMaster(
diff --git a/tests/test_craftmaster.py b/tests/test_craftmaster.py
index 7d26254..de7a333 100644
--- a/tests/test_craftmaster.py
+++ b/tests/test_craftmaster.py
@@ -6,6 +6,8 @@ import contextlib
 import io
 import json
 import os
+import subprocess
+import sys
 import tempfile
 import unittest
 from unittest import mock
@@ -53,10 +55,10 @@ class CraftPackageExtractionTest(unittest.TestCase):
                 self.make_master()._setDefaultCraftPackage()
 
             self.assertNotIn("CRAFT_PACKAGE", os.environ)
+            self.assertIn("Unable to use title source(s): GITHUB_EVENT_PATH", stderr.getvalue())
             self.assertIn(
-                "Unable to use title source(s): GITHUB_EVENT_PATH", stderr.getvalue()
+                "Warning: CRAFT_PACKAGE was not set and no merge request", stderr.getvalue()
             )
-            self.assertIn("Continuing without CRAFT_PACKAGE", stderr.getvalue())
 
     def test_sets_craft_package_from_github_pull_request_title(self):
         with tempfile.NamedTemporaryFile(
@@ -78,6 +80,22 @@ class CraftPackageExtractionTest(unittest.TestCase):
         finally:
             os.unlink(event_path)
 
+    def test_determine_package_option_prints_detected_package_without_config(self):
+        env = {
+            "PATH": os.environ["PATH"],
+            "CI_COMMIT_TITLE": "kcalc: Build package",
+        }
+        completed = subprocess.run(
+            [sys.executable, "CraftMaster.py", "--determine-package"],
+            check=True,
+            encoding="utf-8",
+            env=env,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+        )
+
+        self.assertEqual(completed.stdout.strip(), "kcalc")
+
 
 if __name__ == "__main__":
     unittest.main()