use python -m build to create wheels with python-wheel.mk

- add build to default crossenv
- fix python-wheel.mk (include spksrc.crossenv.mk)
- use workaround to access crossenv to build wheels with python-wheel.mk
  for unknown reason the CROSSENV variable is empty, use $(CROSSENV_PATH)/bin/activate instead

cross/cryptography/Makefile

@@ -2,7 +2,7 @@ PKG_NAME = cryptography
 PKG_VERS = 41.0.3
 PKG_EXT = tar.gz
 PKG_DIST_NAME = $(PKG_NAME)-$(PKG_VERS).$(PKG_EXT)
-PKG_DIST_SITE = https://files.pythonhosted.org/packages/source/c/$(PKG_NAME)
+PKG_DIST_SITE = https://files.pythonhosted.org/packages/source/c/cryptography
 PKG_DIR = $(PKG_NAME)-$(PKG_VERS)
 
 DEPENDS = cross/openssl3 cross/cffi
@@ -11,11 +11,4 @@ HOMEPAGE = https://github.com/pyca/cryptography
 COMMENT  = Provide cryptographic recipes and primitives to Python developers
 LICENSE  = BSD/ASL2
 
-###
-### This cross/cryptography is needed to generate python-limited abi3 wheels
-### Ref: https://github.com/pyca/cryptography/issues/7671
-###
-
-WHEELS_BUILD_ARGS = --py-limited-api=$(PYTHON_LIMITED_API)
-
 include ../../mk/spksrc.python-wheel.mk

mk/crossenv/requirements-default.txt

@@ -1,6 +1,7 @@
 pip==24.3.1
 pip-tools==7.4.1
 setuptools==75.4.0
+build==1.2.2
 wheel==0.45.0
 #
 cffi==1.17.1

mk/spksrc.python-module.mk

@@ -1,5 +1,5 @@
 ### Python module rules
-#   Invoke make to (cross-) compile a python module. 
+#   Invoke make to (cross-) compile a python extension module. 
 # You can do some customization through python-cc.mk
 
 # Python module targets
@@ -24,11 +24,11 @@ build_crossenv_module:
 	@$(MSG) WHEEL="$(PKG_NAME)-$(PKG_VERS)" $(MAKE) crossenv-$(ARCH)-$(TCVERSION)
 	@WHEEL="$(PKG_NAME)-$(PKG_VERS)" $(MAKE) crossenv-$(ARCH)-$(TCVERSION)
 
-### Python module rules
+### Python extension module rules
 compile_python_module: build_crossenv_module
 	$(foreach e,$(shell cat $(CROSSENV_MODULE_PATH)/build/python-cc.mk),$(eval $(e)))
 	$(eval PYTHONPATH = $(PYTHON_SITE_PACKAGES_NATIVE):$(PYTHON_LIB_NATIVE):$(INSTALL_DIR)$(INSTALL_PREFIX)/$(PYTHON_LIB_DIR)/site-packages/)
-	@$(MSG) "activate crossenv found: $(CROSSENV)"
+	@$(MSG) "PYTHON MODULE: activate crossenv found: $(CROSSENV)"
 	@. $(CROSSENV) ; \
 	$(RUN) PYTHONPATH=$(PYTHONPATH) python setup.py build_ext \
 	       -I $(STAGING_INSTALL_PREFIX)/include \

mk/spksrc.python-wheel.mk

@@ -39,11 +39,17 @@ include ../../mk/spksrc.wheel-env.mk
 
 ### Python wheel rules
 build_python_wheel_target:
-	@$(MSG) "activate crossenv found: $(CROSSENV)"
-	@. $(CROSSENV) ; \
-	$(RUN) _PYTHON_HOST_PLATFORM=$(TC_TARGET) python3 setup.py $(BUILD_ARGS) bdist_wheel $(WHEELS_BUILD_ARGS) -d $(WHEELHOUSE)
+	@$(MSG) "PYTHON WHEEL: activate crossenv found: $(CROSSENV)"
+	@$(MSG) "CROSSENV_PATH = $(CROSSENV_PATH)"
+	@. $(CROSSENV_PATH)/bin/activate ; \
+	$(RUN) _PYTHON_HOST_PLATFORM=$(TC_TARGET) python3 -m build $(BUILD_ARGS) --wheel $(WHEELS_BUILD_ARGS) --outdir $(WHEELHOUSE)
 	@$(RUN) echo "$(PKG_NAME)==$(PKG_VERS)" >> $(WHEELHOUSE)/$(WHEELS_CROSS_COMPILE)
 
 post_install_python_wheel_target: $(WHEEL_TARGET) install_python_wheel
 
 all: install
+
+###
+
+# Use crossenv
+include ../../mk/spksrc.crossenv.mk

mk/spksrc.wheel.mk

@@ -156,7 +156,7 @@ ifneq ($(strip $(WHEELS)),)
 	         [ -d $${crossenv} ] && . $${crossenv}/build/python-cc.mk && break ; \
 	      done ; \
 	      crossenvPIP=$(PIP) ; \
-	      $(MSG) "activate crossenv found: $${CROSSENV}" ; \
+	      $(MSG) "WHEEL: activate crossenv found: $${CROSSENV}" ; \
 	      if [ -s "$${CROSSENV}" ] ; then \
 	         crossenvPIP=$$(. $${CROSSENV} && which pip) ; \
 	         $(MSG) "Python crossenv found: [$${CROSSENV}]" ; \