regex: add recipe for version 2019.12.20 (#4485)

Co-authored-by: Jérôme Duval <jerome.duval@gmail.com>

dev-python/regex/regex-2019.12.20.recipe

@@ -0,0 +1,64 @@
+SUMMARY="All things regular expression: implemented in python"
+DESCRIPTION="This regex implementation is backwards-compatible with the \
+standard ‘re’ module, but offers additional functionality."
+HOMEPAGE="https://pypi.org/project/regex/"
+COPYRIGHT="2013-2019 Matthew Barnett"
+LICENSE="MIT"
+REVISION="1"
+SOURCE_URI="https://pypi.org/packages/source/r/regex/regex-$portVersion.tar.gz"
+CHECKSUM_SHA256="106e25a841921d8259dcef2a42786caae35bc750fb996f830065b3dfaa67b77e"
+
+ARCHITECTURES="!x86_gcc2 x86_64"
+SECONDARY_ARCHITECTURES="x86"
+
+PROVIDES="
+	$portName$secondaryArchSuffix = $portVersion
+	"
+REQUIRES="
+	haiku$secondaryArchSuffix
+	"
+
+BUILD_REQUIRES="
+	haiku${secondaryArchSuffix}_devel
+	"
+
+BUILD_PREREQUIRES="
+	cmd:gcc$secondaryArchSuffix
+	"
+
+PYTHON_PACKAGES=(python36 python3)
+PYTHON_VERSIONS=(3.6 3.7)
+for i in "${!PYTHON_PACKAGES[@]}"; do
+pythonPackage=${PYTHON_PACKAGES[i]}
+pythonVersion=${PYTHON_VERSIONS[$i]}
+eval "PROVIDES_${pythonPackage}=\"\
+	${portName}${secondaryArchSuffix}_$pythonPackage = $portVersion\
+	\"; \
+REQUIRES_$pythonPackage=\"\
+	haiku$secondaryArchSuffix\n\
+	cmd:python$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
+}