python: add ninja build dependency (#1128)

* python: add ninja build dependency

* change ninja version setting

* CI: install ninja for SDist

* fix package name

.github/workflows/build_wheels.yml

@@ -36,7 +36,11 @@ jobs:
     - name: Build SDist
       run: pipx run build --sdist
     - name: Confirm SDist can be built
-      run: pip wheel dist/*.tar.gz
+      run: |
+        # FIXME: why doesn't scikit_build_core automatically download ninja?
+        sudo apt-get update
+        sudo apt-get install ninja-build
+        pip wheel dist/*.tar.gz
     - uses: actions/upload-artifact@v4
       with:
         name: python-sdist

pyproject.toml

@@ -32,7 +32,8 @@ requires = [
 build-backend = "scikit_build_core.build"
 
 [tool.scikit-build]
-cmake.minimum-version = "3.18"
+cmake.version = ">=3.18"
+ninja.version = ">=1.11"
 sdist.exclude = [
     ".github",
     "bindings/c",