expandvars: new recipe. (#10237)

Required to build newest version of "yarl" (1.9.4).

dev-python/expandvars/expandvars-0.12.0.recipe

@@ -0,0 +1,64 @@
+SUMMARY="Expand system variables, Unix style"
+DESCRIPTION="This module is inspired by GNU bash's variable expansion features. \
+It can be used as an alternative to Python's os.path.expandvars function.
+
+A good use case is reading config files with the flexibility of reading values from \
+environment variables using advanced features like returning a default value if some \
+variable is not defined."
+HOMEPAGE="https://github.com/sayanarijit/expandvars"
+COPYRIGHT="2019 Arijit Basu"
+LICENSE="MIT"
+REVISION="1"
+SOURCE_URI="https://files.pythonhosted.org/packages/py3/${portName:0:1}/$portName/$portName-$portVersion-py3-none-any.whl#noarchive"
+CHECKSUM_SHA256="7432c1c2ae50c671a8146583177d60020dd210ada7d940e52af91f1f84f753b2"
+
+ARCHITECTURES="any"
+
+PROVIDES="
+	$portName = $portVersion
+	"
+REQUIRES="
+	haiku
+	"
+
+BUILD_REQUIRES="
+	haiku_devel
+	"
+
+# Add more versions here as necessary:
+PYTHON_VERSIONS=(3.10)
+
+for i in "${!PYTHON_VERSIONS[@]}"; do
+	pythonVersion=${PYTHON_VERSIONS[$i]}
+	pythonPackage=python${pythonVersion//.}
+
+	eval "PROVIDES_$pythonPackage=\"
+		${portName}_$pythonPackage = $portVersion
+		\""
+
+	eval "REQUIRES_$pythonPackage=\"
+		$REQUIRES
+		cmd:python$pythonVersion
+		\""
+
+	BUILD_REQUIRES+="
+		installer_$pythonPackage
+		"
+	BUILD_PREREQUIRES+="
+		cmd:python$pythonVersion
+		"
+done
+
+INSTALL()
+{
+	for i in "${!PYTHON_VERSIONS[@]}"; do
+		pythonVersion=${PYTHON_VERSIONS[$i]}
+		pythonPackage=python${pythonVersion//.}
+
+		python=python$pythonVersion
+		$python -m installer -p $prefix $portName-$portVersion-py3-none-any.whl
+
+		packageEntries $pythonPackage \
+			$prefix/lib/python*
+	done
+}