Create graphene.rb

Dependency for building gtk

packages/graphene.rb

+require 'package'
+
+class Graphene < Package
+  description 'A thin layer of graphic data types'
+  homepage 'https://github.com/ebassi/graphene'
+  version '1.6.0'
+  source_url 'https://github.com/ebassi/graphene/archive/1.6.0.tar.gz'
+  source_sha256 '98970f859e452ce421b72726ca727fdf3ac27cb4804b62bfe520157fa46aa2fd'
+
+  depends_on 'ninja'
+  depends_on 'python3'
+  depends_on 'gobject_introspection'
+
+  def self.build
+    system "pip3 install --prefix #{CREW_PREFIX} --root #{CREW_DEST_DIR} meson"    # depends_on meson
+    system "meson _build --prefix=#{CREW_PREFIX} --libdir=#{CREW_LIB_PREFIX} -Denable-arm-neon=false"
+  end
+
+  def self.install
+    Dir.chdir("_build") do
+     system "ninja test"
+     system "ninja install"
+    end
+  end
+end