chore: add README.md to awkward-cpp

.github/workflows/deploy-cpp.yml

@@ -101,6 +101,15 @@ jobs:
         config-file: cibuildwheel.toml
         package-dir: awkward-cpp
 
+    - name: Check metadata
+      shell: python
+      run: |
+        import subprocess, glob
+        subprocess.run(
+          ["pipx", "run", "twine", "check", *glob.glob("wheelhouse/*.whl")],
+          check=True
+        )
+
     - name: Upload wheels
       uses: actions/upload-artifact@v3
       with:
@@ -144,6 +153,15 @@ jobs:
         config-file: cibuildwheel.toml
         package-dir: awkward-cpp
 
+    - name: Check metadata
+      shell: python
+      run: |
+        import subprocess, glob
+        subprocess.run(
+          ["pipx", "run", "twine", "check", *glob.glob("wheelhouse/*.whl")],
+          check=True
+        )
+
     - name: Upload wheels
       uses: actions/upload-artifact@v3
       with:

awkward-cpp/README.md

@@ -0,0 +1,3 @@
+# `awkward-cpp`
+
+`awkward-cpp` provides precompiled routines for the `awkward` package. It is not useful on its own, only as a dependency for `awkward `.

awkward-cpp/pyproject.toml

@@ -11,6 +11,7 @@ version = "1"
 dependencies = [
     "numpy>=1.13.1"
 ]
+readme = "README.md"
 description = "CPU kernels and compiled extensions for Awkward Array"
 authors = [
     {name = "Jim Pivarski", email = "[email protected]"},