fix: remove STABLE_ABI from Python 3.13 build (#52)

* Remove STABLE_ABI from build, just build separate wheels

* Test 3.13 as well

Author: charlesbmi

.github/workflows/test_gpu.yml

@@ -27,7 +27,7 @@ jobs:
   test-gpu:
     strategy:
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.11", "3.13"]
         os: ["linux-x64-nvidia-gpu-t4"]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 10

CMakeLists.txt

@@ -90,11 +90,6 @@ nanobind_add_module(
   # Name of the extension
   _cuda_impl
 
-  # Target the stable ABI for Python 3.12+, which reduces
-  # the number of binary wheels that must be built. This
-  # does nothing on older Python versions
-  STABLE_ABI
-
   # Build libnanobind statically and merge it into the
   # extension (which itself remains a shared library)
   NB_STATIC