Add gertty and more of its python dependencies.

Unfortunately it does not manage to connect to Haiku server. Works ok
with OpenOCD's one.

dev-python/pbr/pbr-4.2.0.recipe

@@ -0,0 +1,65 @@
+SUMMARY="Python Build Reasonableness"
+DESCRIPTION="PBR is a library that injects some useful and sensible default \
+behaviors into your setuptools run.
+
+PBR is only mildly configurable. The basic idea is that there’s a decent way \
+to run things and if you do, you should reap the rewards, because then it’s \
+simple and repeatable."
+HOMEPAGE="https://pypi.org/project/pbr/"
+COPYRIGHT="2013-2018 OpenStack Contributors"
+LICENSE="Apache v2"
+REVISION="1"
+SOURCE_URI="https://files.pythonhosted.org/packages/c8/c3/935b102539529ea9e6dcf3e8b899583095a018b09f29855ab754a2012513/pbr-$portVersion.tar.gz"
+CHECKSUM_SHA256="1b8be50d938c9bb75d0eaf7eda111eec1bf6dc88a62a6412e33bf077457e0f45"
+
+ARCHITECTURES="any"
+
+PROVIDES="
+	$portName = $portVersion
+	cmd:pbr
+	"
+REQUIRES="
+	haiku
+	"
+
+BUILD_REQUIRES="
+	haiku_devel
+	"
+
+PYTHON_PACKAGES=(python3)
+PYTHON_VERSIONS=(3.6)
+for i in "${!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
+}
+