enable PyPy 3.8 and 32-bit builds

Author: wjakob

CMakeLists.txt

@@ -20,9 +20,9 @@ if (NOT SKBUILD)
    $ pip install nanobind scikit-build-core[pyproject]
    $ pip install --no-build-isolation -ve .
   =====================================================================
-  You can optionally add -Ceditable.rebuild=true to auto-rebuild when you
-  import. Otherwise, you need to rerun the above command when you edit C++ files.
-  ")
+  You may optionally add -Ceditable.rebuild=true to auto-rebuild when
+  the package is imported. Otherwise, you need to re-run the above
+  after editing C++ files.")
 endif()
 
 # Try to import all Python components potentially needed by nanobind
@@ -55,5 +55,5 @@ nanobind_add_module(
   src/nanobind_example_ext.cpp
 )
 
-# Install directive for scikit-build
+# Install directive for scikit-build-core
 install(TARGETS nanobind_example_ext LIBRARY DESTINATION nanobind_example)

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["scikit-build-core >=0.4.3", "nanobind >=1.3.1"]
+requires = ["scikit-build-core >=0.4.3", "nanobind >=1.3.2"]
 build-backend = "scikit_build_core.build"
 
 [project]
@@ -31,12 +31,6 @@ wheel.py-api = "cp312"
 
 
 [tool.cibuildwheel]
-# PyPy38 is not supported by nanobind
-skip = ["pp38*"]
-
-# 32-bit builds are not supported by nanobind
-archs = ["auto64"]
-
 # Necessary to see build output from the actual compilation
 build-verbosity = 1