Fix various Python dependencies

aiohttp: various new dependencies after version bump
cffi: missing dependency

dev-python/asynctest/asynctest-0.13.0.recipe

@@ -0,0 +1,63 @@
+SUMMARY="Unittest package enhncements for testing asyncio libraries"
+DESCRIPTION="The package asynctest is built on top of the standard unittest module and cuts down \
+boilerplate code when testing libraries for asyncio.
+
+Currently, asynctest targets the “selector” model, hence, some features will not (yet?) work with \
+Windows’ proactor."
+HOMEPAGE="https://pypi.org/project/asynctest/"
+COPYRIGHT="2015-2019 Martin Richard"
+LICENSE="Apache v2"
+REVISION="1"
+SOURCE_URI="https://files.pythonhosted.org/packages/0c/0f/6056f4435923d2f8c89ac9ef2d18506a569348d8f9cc827b0dd7a4c8acc4/asynctest-$portVersion.tar.gz"
+CHECKSUM_SHA256="c27862842d15d83e6a34eb0b2866c323880eb3a75e4485b079ea11748fd77fac"
+
+ARCHITECTURES="all"
+
+PROVIDES="
+	$portName = $portVersion
+	"
+REQUIRES="
+	haiku
+	"
+
+BUILD_REQUIRES="
+	haiku_devel
+	"
+
+PYTHON_PACKAGES=(python3 python38 python39)
+PYTHON_VERSIONS=(3.7 3.8 3.9)
+for i in "${!PYTHON_PACKAGES[@]}"; do
+pythonPackage=${PYTHON_PACKAGES[i]}
+pythonVersion=${PYTHON_VERSIONS[$i]}
+eval "PROVIDES_${pythonPackage}=\"\
+	${portName}_$pythonPackage = $portVersion\
+	\"; \
+REQUIRES_$pythonPackage=\"\
+	haiku\n\
+	cmd:python$pythonVersion\
+	\""
+BUILD_REQUIRES="$BUILD_REQUIRES
+	setuptools_$pythonPackage"
+BUILD_PREREQUIRES="$BUILD_PREREQUIRES
+	cmd:python$pythonVersion"
+done
+
+INSTALL()
+{
+	for i in "${!PYTHON_PACKAGES[@]}"; do
+		pythonPackage=${PYTHON_PACKAGES[i]}
+		pythonVersion=${PYTHON_VERSIONS[$i]}
+
+		python=python$pythonVersion
+		installLocation=$prefix/lib/$python/vendor-packages/
+		export PYTHONPATH=$installLocation:$PYTHONPATH
+		mkdir -p $installLocation
+		rm -rf build
+		$python setup.py build install \
+			--root=/ --prefix=$prefix
+
+		packageEntries  $pythonPackage \
+			$prefix/lib/python*
+	done
+}
+