python · StanFromIreland · Jun 4, 2026 · May 26, 2026 · Jun 4, 2026
diff --git a/.github/workflows/pypi-package.yml b/.github/workflows/pypi-package.yml
@@ -25,12 +25,6 @@ jobs:
          persist-credentials: false
      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0

-      - name: Compile translations
-        run: |
-          pip install --upgrade pip
-          pip install -r requirements.txt
-          python babel_runner.py compile
-
      - uses: hynek/build-and-inspect-python-package@d44ca7d91762de7a7d5436ddae667c6da6d1c3df # v2.18.0

  # Upload to real PyPI on GitHub Releases.

diff --git a/babel_runner.py b/babel_runner.py
@@ -8,6 +8,8 @@
 import tomllib
 from pathlib import Path

+from hatchling.builders.hooks.plugin.interface import BuildHookInterface
+
 # Global variables used by pybabel below (paths relative to PROJECT_DIR)
 DOMAIN = "python-docs-theme"
 COPYRIGHT_HOLDER = "Python Software Foundation"
@@ -106,6 +108,11 @@ def compile_catalogs(locale: str) -> None:
    subprocess.run(cmd, cwd=PROJECT_DIR, check=True)


+class CustomBuildHook(BuildHookInterface):
+    def initialize(self, version: str, build_data: dict[str, object]) -> None:
+        compile_catalogs("")
+
+
 def main() -> None:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument(

diff --git a/pyproject.toml b/pyproject.toml
@@ -1,7 +1,8 @@
 [build-system]
-build-backend = "flit_core.buildapi"
+build-backend = "hatchling.build"
 requires = [
-  "flit-core>=3.7",
+  "babel",
+  "hatchling",
 ]

 [project]
@@ -36,9 +37,12 @@ urls.Download = "https://pypi.org/project/python-docs-theme/"
 urls.Homepage = "https://github.com/python/python-docs-theme/"
 entry-points."sphinx.html_themes".python_docs_theme = "python_docs_theme"

-[tool.flit]
-module.name = "python_docs_theme"
-sdist.include = [ "python_docs_theme/" ]
+[tool.hatch]
+build.artifacts = [ "python_docs_theme/locale/**/*.mo" ]
+build.hooks.custom.path = "babel_runner.py"
+build.targets.wheel.packages = [ "python_docs_theme" ]
+build.targets.wheel.exclude = [ "python_docs_theme/locale/**/*.po" ]
+version.path = "python_docs_theme/__init__.py"

 [tool.ruff]
 fix = true

diff --git a/python_docs_theme/locale/de/LC_MESSAGES/python-docs-theme.po b/python_docs_theme/locale/de/LC_MESSAGES/python-docs-theme.po
@@ -7,7 +7,6 @@
 # Translators:
 # Cristián Maureira-Fredes, 2025
 #
-#, fuzzy
 msgid ""
 msgstr ""
 "Project-Id-Version: python-docs-theme 2025.5\n"

diff --git a/requirements.txt b/requirements.txt
@@ -1,3 +1,4 @@
 # for babel_runner.py
 Babel
+hatchling
 Jinja2
-Original file line number
+Diff line change
@@ -1,3 +1,4 @@
     # for babel_runner.py
     Babel
+    hatchling
     Jinja2
         Comment thread


        
            
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