python3-host.mk: disable pip --no-binary on macOS

For some reason, pip builds a broken Cython, which segfaults on attempting
to install wheel. Work around this by allowing to use precompiled wheels.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit d798ccce9a)

lang/python/python3-host.mk

@@ -109,7 +109,7 @@ define HostPython3/PipInstall
 		$(HOST_PYTHON3_PIP_VARS) \
 		$(HOST_PYTHON3_PIP) \
 			install \
-			--no-binary :all: \
+			$(if $(findstring Darwin,$(HOST_OS)),,--no-binary :all:) \
 			--progress-bar off \
 			--require-hashes \
 			$(1) \