Initial implementation

app/data/version.txt

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+# This file should be re-generated running: scripts/update-version-file.sh script
+v1.0.6-alpha 9278d09

app/version.py

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+# Copyright © 2023 Cerc
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http:#www.gnu.org/licenses/>.
+
+import click
+import importlib
+
+@click.command()
+@click.pass_context
+def command(ctx):
+    '''print tool version'''
+
+    # See: https://stackoverflow.com/a/20885799/1701505
+    from . import data
+    with importlib.resources.open_text(data, "version.txt") as version_file:
+        # TODO: code better version that skips comment lines
+        version_string = version_file.read().splitlines()[1]
+
+    print(f"Version: {version_string}")