Python example

generic/generic_python-1.2.3.recipe

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+SUMMARY="Short description of ProjectX"
+DESCRIPTION="Long ProjectX description.
+Spanning several paragraphs, maybe
+ - containing
+ - bullet points etc.
+You can also have really long lines that do not fit in 80 characters and use \
+a backslash to wrap the line."
+HOMEPAGE="https://homepage/of/projectx.org"
+COPYRIGHT="2014 Developer name
+	2016 Another developer's name"
+LICENSE="MIT
+	GNU GPL v2"
+REVISION="1"
+SOURCE_URI="https://github.com/HaikuArchives/ProjectX/archive/projectx-$portVersion.tar.gz"
+CHECKSUM_SHA256="000000000000000000000000000000000"
+SOURCE_DIR="$portVersionedName"
+PATCHES="projectx-$portVersion.patchset"
+ADDITIONAL_FILES="projectx.rdef"
+
+ARCHITECTURES="any"
+
+PROVIDES="
+	$portName = $portVersion
+	"
+REQUIRES="
+	haiku
+	"
+
+BUILD_REQUIRES="
+	haiku_devel
+	"
+
+PYTHON_PACKAGES=(python python3)
+PYTHON_VERSIONS=(2.7 3.6)
+for i in "${!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
+}