Check out submodules.

Author: ltfish

.github/workflows/pip.yml

@@ -19,6 +19,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        submodules: "recursive"
 
     - uses: actions/setup-python@v5
       with:

.github/workflows/wheels.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
       with:
-        submodules: true
+        submodules: "recursive"
 
     - name: Build SDist
       run: pipx run build --sdist
@@ -41,7 +41,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
       with:
-        submodules: true
+        submodules: "recursive"
 
     - uses: pypa/cibuildwheel@v2.22