python3-scikit-image: simplify template

- Meson-aware numpy build helper and pep517 style eliminate a lot of
  environment setup

- Remove obsolete CC, CXXFLAGS overrides

srcpkgs/python3-scikit-image/template

@@ -3,7 +3,7 @@ pkgname=python3-scikit-image
 version=0.21.0
 revision=1
 build_style=python3-pep517
-build_helper="meson"
+build_helper="meson numpy"
 hostmakedepends="python3-build python3-installer python3-meson-python
  python3-wheel python3-setuptools python3-packaging python3-Cython pythran
  python3-lazy_loader python3-numpy pkg-config"
@@ -20,32 +20,6 @@ checksum=53a82a9dbd3ed608d2ad3876269a271a7e922b12e228388eac996b508aadd652
 # Tests require data files and unpackaged dependencies
 make_check=no
 
-if [ "${CROSS_BUILD}" ]; then
-	make_build_args+=" --no-isolation --wheel
-	 -Csetup-args=--cross-file=${XBPS_WRAPPERDIR}/meson/xbps_meson.cross
-	 -Csetup-args=--cross-file=${XBPS_WRAPPERDIR}/meson/python.cross"
-fi
-
-post_patch() {
-	if [ "${CROSS_BUILD}" ]; then
-		local _xpy="${XBPS_CROSS_BASE}/${py3_sitelib}"
-		cat > "${XBPS_WRAPPERDIR}/meson/python.cross" <<-EOF
-		[properties]
-		numpy-include-dir = '${_xpy}/numpy/core/include'
-		pythran-include-dir = '${_xpy}/pythran'
-		EOF
-	fi
-}
-
-pre_build() {
-	if [ "${CROSS_BUILD}" ]; then
-		# Meson can't tolerate $CC with arguments as set by build helper
-		CC="${XBPS_CROSS_TRIPLET}-gcc"
-		# CXX needs to know where to find Python headers
-		CXXFLAGS+=" -I${XBPS_CROSS_BASE}/${py3_inc}"
-	fi
-}
-
 post_install() {
 	vlicense LICENSE.txt
 }