[PATCH 5/5] tuna: Get the tuna version from a single source

Create tuna/version.py with a TUNA_VERSION variable as the single source
for the version number.

Changes:
- Add tuna/version.py with a TUNA_VERSION variable
- Update setup.py to import version from tuna.version
- Update tuna-cmd.py to import version from tuna.version
- Update pyproject.toml to use dynamic versioning via setuptools

For future releases, only tuna/version.py needs to be updated.
All other files (setup.py, tuna-cmd.py, pyproject.toml) automatically
pick up the version from this single source.

Version updated from 0.20 to 0.21.

Assisted-by: Claude:claude-sonnet-4-5
Signed-off-by: John Kacur <[email protected]>
---
 pyproject.toml  | 5 ++++-
 setup.py        | 5 ++++-
 tuna-cmd.py     | 3 ++-
 tuna/version.py | 7 +++++++
 4 files changed, 17 insertions(+), 3 deletions(-)
 create mode 100644 tuna/version.py

diff --git a/pyproject.toml b/pyproject.toml
index ca149c352df0..6f995cb4c0a8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "tuna"
-version = "0.20"
+dynamic = ["version"]
 description = "Application tuning GUI"
 license = "GPL-2.0-only"
 authors = [
@@ -37,5 +37,8 @@ Source = "https://git.kernel.org/pub/scm/utils/tuna/tuna.git/"
 tuna = "tuna.tuna:main"
 oscilloscope = "tuna.oscilloscope:main"
 
+[tool.setuptools.dynamic]
+version = {attr = "tuna.version.TUNA_VERSION"}
+
 [tool.setuptools.packages.find]
 include = ["tuna*"]
diff --git a/setup.py b/setup.py
index a40f29ef3817..8036a647f698 100755
--- a/setup.py
+++ b/setup.py
@@ -5,6 +5,9 @@ import sysconfig
 from os.path import isfile, relpath
 from setuptools import setup
 
+# Get the tuna version from a single source
+from tuna.version import TUNA_VERSION
+
 if isfile("MANIFEST"):
     os.unlink("MANIFEST")
 
@@ -16,7 +19,7 @@ if SCHEME not in sysconfig.get_scheme_names():
 PYTHONLIB = relpath(sysconfig.get_path('platlib', SCHEME), '/usr')
 
 setup(name="tuna",
-      version = "0.20",
+      version = TUNA_VERSION,
       description = "Application tuning GUI",
       author = "Arnaldo Carvalho de Melo, John Kacur",
       author_email = "[email protected], [email protected]",
diff --git a/tuna-cmd.py b/tuna-cmd.py
index 25515d5ddd5a..62972cdd328a 100755
--- a/tuna-cmd.py
+++ b/tuna-cmd.py
@@ -23,6 +23,7 @@ import tuna.tuna_sched as tuna_sched
 import procfs
 from tuna import tuna, sysfs, utils
 from tuna import cpuset
+from tuna.version import TUNA_VERSION
 import logging
 import time
 import shutil
@@ -162,7 +163,7 @@ def gen_parser():
     MODS = {
             "logging": dict(dest='loglevel', metavar='LOG-LEVEL', type=get_loglevel, help="Log application details to file for given LOG-LEVEL"),
             "debug" : dict(action='store_true', dest='debug', help='Print DEBUG level logging details to console'),
-            "version": dict(action='version', version='0.20', help="show version"),
+            "version": dict(action='version', version=TUNA_VERSION, help="show version"),
             "warn": dict(action='store_true', dest='warn', help='Warn when thread/IRQ patterns match nothing'),
             "threads": dict(dest='thread_list', default='', metavar='THREAD-LIST', type=str, help="THREAD-LIST affected by commands"),
             "irqs": dict(dest='irq_list', default='', metavar='IRQ-LIST', type=str, help="IRQ-LIST affect by commands"),
diff --git a/tuna/version.py b/tuna/version.py
new file mode 100644
index 000000000000..23f503e6b1bc
--- /dev/null
+++ b/tuna/version.py
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+#   Copyright 2008 - 2009   Arnaldo Carvalho de Melo <[email protected]>
+#   Copyright 2015 - 2026   John Kacur <[email protected]>
+#
+
+TUNA_VERSION = '0.21'
-- 
2.55.0