__version__ is added (+test)

pyproject.toml

@@ -5,6 +5,9 @@ build-backend = "setuptools.build_meta"
 [tool.setuptools.package-dir]
 "pg_probackup2" = "src"
 
+[tool.setuptools.dynamic]
+version = {attr = "pg_probackup2.__version__"}
+
 [tool.flake8]
 extend-ignore = ["E501"]
 exclude = [".git", "__pycache__", "env", "venv"]
@@ -17,7 +20,7 @@ log_file_date_format = "%Y-%m-%d %H:%M:%S"
 
 [project]
 name = "testgres_pg_probackup2"
-version = "0.10.0"
+dynamic = ["version"]
 description = "Plugin for testgres that manages pg_probackup2"
 readme = "README.md"
 requires-python = ">=3.7.3"

src/__init__.py

@@ -0,0 +1 @@
+__version__ = "0.10.0"

tests/test_common.py

@@ -0,0 +1,17 @@
+from src import __version__ as pg_probackup2_version
+
+from packaging.version import Version
+
+
+class TestCommon:
+    def test_pg_probackup2_version(self):
+        assert type(pg_probackup2_version) is str
+
+        v = Version(pg_probackup2_version)
+
+        assert v.major == 0
+        assert v.minor == 10
+        assert v.micro == 0
+
+        assert str(v) == pg_probackup2_version
+        return