Add default for version

Author: hynek

CHANGELOG.md

@@ -13,6 +13,10 @@ The **third number** is for emergencies when we need to start branches for older
 
 ## [Unreleased](https://github.com/hynek/hatch-fancy-pypi-readme/compare/23.2.0...HEAD)
 
+### Fixed
+
+- Added a default to an internal API that is used by *scikit-build-core*.
+
 
 ## [23.2.0](https://github.com/hynek/hatch-fancy-pypi-readme/compare/23.1.0...23.2.0) - 2023-12-31
 

src/hatch_fancy_pypi_readme/_builder.py

@@ -15,8 +15,12 @@
 def build_text(
     fragments: list[Fragment],
     substitutions: list[Substituter],
-    version: str,
+    version: str = "",
 ) -> str:
+    """
+    Try avoiding breaking the API unnecessarily; it's used directly by
+    scikit-build-core.
+    """
     text = "".join(f.render() for f in fragments)
 
     for sub in substitutions: