Create dconf.rb (#2200)

packages/dconf.rb

+require 'package'
+
+class Dconf < Package
+  description 'The DConf package contains a low-level configuration system.'
+  homepage 'https://wiki.gnome.org/Projects/dconf'
+  version '0.28.0'
+  source_url 'https://download.gnome.org/sources/dconf/0.28/dconf-0.28.0.tar.xz'
+  source_sha256 '61d3b3865ef58b729c3b39aa0979f886c014aa8362f93dcfc74bf5648ed9c742'
+
+  depends_on 'dbus'  => :build
+  depends_on 'gtk_doc' => :build
+  depends_on 'glib'  # version 2
+  depends_on 'meson'  => :build
+  depends_on 'vala'  => :build
+  
+  def self.build
+    system "meson --prefix=#{CREW_PREFIX} --libdir=#{CREW_LIB_PREFIX} builddir"
+    system "ninja -C builddir"
+  end
+
+  def self.install
+    system "DESTDIR=#{CREW_DEST_DIR} ninja -C builddir install"
+  end
+  
+end