refactor: stop reading VERSION.txt to set the version attribute

Author: leodevian

changelog.d/+26b364b2.changed.md

@@ -0,0 +1 @@
+Stop reading `VERSION.txt` to set the version attribute.

template/src/{% if dynamic_version %}.gitignore{% endif %}

@@ -0,0 +1 @@
+*/VERSION.txt

template/src/{{ package_name }}/__init__.py.jinja

@@ -3,10 +3,7 @@
 from __future__ import annotations
 
 __all__ = ("__version__",)
-{% if dynamic_version %}
-from .__version__ import __version__
-{%- else %}
+
 import importlib.metadata
 
 __version__ = importlib.metadata.version("{{ distribution_name }}")
-{%- endif %}

template/src/{{ package_name }}/{% if dynamic_version %}.{% endif %}/.gitignore

@@ -2,13 +2,14 @@
 
 from __future__ import annotations
 
-import importlib.metadata
+import importlib.resources
 
 from {{ package_name }} import __version__
 
 
 # https://packaging.python.org/discussions/single-source-version/#single-sourcing-the-project-version
 def test_version() -> None:
     """Test that the version attribute matches the package version."""
-    version = importlib.metadata.version("{{ distribution_name }}")
+    version_path = importlib.resources.files("{{ package_name }}")
+    version = version_path.read_text().rstrip()
     assert __version__ == version