chore: use PEP 639 licenses (METADATA 2.4)

Signed-off-by: Henry Schreiner <[email protected]>

.readthedocs.yml

@@ -13,7 +13,7 @@ build:
     - asdf plugin add uv
     - asdf install uv latest
     - asdf global uv latest
-    - uv run --only-group docs sphinx-build -T -b html -d docs/_build/doctrees -D language=en docs $READTHEDOCS_OUTPUT/html
+    - uv run --no-project --only-group docs sphinx-build -T -b html -d docs/_build/doctrees -D language=en docs $READTHEDOCS_OUTPUT/html
 
 submodules:
   exclude: all

pyproject.toml

@@ -16,12 +16,15 @@ keywords = [
     "boost-histogram",
     "histogram",
 ]
+license = "BSD-3-Clause AND BSL-1.0"
+license-files = [
+    "LICENSE", "extern/*/LICENSE"
+]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
     "Intended Audience :: Information Technology",
     "Intended Audience :: Science/Research",
-    "License :: OSI Approved :: BSD License",
     "Operating System :: MacOS",
     "Operating System :: Microsoft :: Windows",
     "Operating System :: POSIX",
@@ -96,7 +99,6 @@ test = [
 
 [tool.scikit-build]
 minimum-version = "build-system.requires"
-cmake.version = "CMakeLists.txt"
 metadata.version.provider = "scikit_build_core.metadata.setuptools_scm"
 sdist.exclude = [
   "extern/**/*.py",