Fix various Python dependencies

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

dev-python/aiosignal/aiosignal-1.2.0.recipe

@@ -0,0 +1,75 @@
+SUMMARY="List of registered asynchronous callbacks"
+DESCRIPTION="manage callbacks in asyncio projects.
+
+Signal is a list of registered asynchronous callbacks.
+
+The signal’s life-cycle has two stages: after creation its content could be filled by using \
+standard list operations: sig.append() etc.
+
+After you call sig.freeze() the signal is frozen: adding, removing and dropping callbacks is \
+forbidden.
+
+The only available operation is calling the previously registered callbacks by using \
+await sig.send(data).
+
+For concrete usage examples see the Signals \
+<https://docs.aiohttp.org/en/stable/web_advanced.html#aiohttp-web-signals> section of the \
+Web Server Advanced <https://docs.aiohttp.org/en/stable/web_advanced.html> chapter of the \
+aiohttp documentation."
+HOMEPAGE="https://pypi.org/project/aiosignal/"
+COPYRIGHT="2019-2021 Nikolay Kim and Martijn Pieters"
+LICENSE="Apache v2"
+REVISION="1"
+SOURCE_URI="https://files.pythonhosted.org/packages/27/6b/a89fbcfae70cf53f066ec22591938296889d3cc58fec1e1c393b10e8d71d/aiosignal-$portVersion.tar.gz"
+CHECKSUM_SHA256="78ed67db6c7b7ced4f98e495e572106d5c432a93e1ddd1bf475e1dc05f5b7df2"
+
+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
+}
+