yarn: new recipe

sys-apps/yarn/yarn-1.22.5.recipe

@@ -0,0 +1,29 @@
+SUMMARY="Node dependency management"
+DESCRIPTION="Fast, reliable, and secure dependency management."
+HOMEPAGE="https://classic.yarnhpkg.com"
+COPYRIGHT="2016-present, Yarn Contributors"
+LICENSE="BSD (2-clause)"
+REVISION="1"
+SOURCE_URI="https://github.com/yarnpkg/yarn/releases/download/v$portVersion/yarn-v$portVersion.tar.gz"
+SOURCE_DIR="yarn-v$portVersion"
+CHECKSUM_SHA256="c664fb4692e4dfea750a37a533780834b40198c00cef4bbc5e8c14abab2ac141"
+
+ARCHITECTURES="any"
+
+PROVIDES="
+	yarn = $portVersion
+	cmd:yarn = $portVersion
+	cmd:yarnpkg = $portVersion
+	"
+REQUIRES="
+	cmd:node
+	"
+
+INSTALL()
+{
+	mkdir -p $libDir/node_modules/yarn $prefix/bin
+	cp -R * $libDir/node_modules/yarn
+
+	ln -sr $libDir/node_modules/yarn/bin/yarn.js $prefix/bin/yarn
+	ln -sr $libDir/node_modules/yarn/bin/yarn.js $prefix/bin/yarnpkg
+}