Fix version generation (#35)

{{cookiecutter.project_slug}}/.github/workflows/release.yml

@@ -10,9 +10,6 @@ permissions:
   # Used to publish to PyPI with Trusted Publishing.
   id-token: write
 
-  # Used to attach signing artifacts to the published release.
-  contents: write
-
 jobs:
   pypi:
     name: upload release to PyPI
@@ -33,9 +30,5 @@ jobs:
 
     - name: publish
       uses: pypa/gh-action-pypi-publish@release/v1
-
-    - name: sign
-      uses: sigstore/gh-action-sigstore-python@v2.1.1
       with:
-        inputs: ./dist/*.tar.gz ./dist/*.whl
-        release-signing-artifacts: true
+        attestations: true

{{cookiecutter.project_slug}}/pyproject.toml

@@ -20,6 +20,9 @@ classifiers = [
 dependencies = []
 requires-python = ">=3.9"
 
+[tool.setuptools.dynamic]
+version = { attr = "{{ cookiecutter.__project_import }}.__version__" }
+
 [project.optional-dependencies]
 doc = [
     {%- if cookiecutter.documentation == "pdoc" -%}
@@ -104,4 +107,4 @@ ignore = ["D203", "D213", "COM812", "ISC001"]
 exclude = ["env", "test", "{{ cookiecutter.__project_src_path }}/_cli.py"]
 ignore-semiprivate = true
 fail-under = 100
-{%- endif %}
+{%- endif %}