parsley - use argp dep

Formula/parsley.rb

@@ -1,33 +1,19 @@
 require 'formula'
 
-class ArgpStandalone <Formula
-  url 'http://www.lysator.liu.se/~nisse/misc/argp-standalone-1.3.tar.gz'
-  homepage 'http://www.freshports.org/devel/argp-standalone/?ref=darwinports.com'
-  md5 '720704bac078d067111b32444e24ba69'
-end
-
 class Parsley <Formula
   head 'git://github.com/fizx/parsley.git'
   homepage 'http://github.com/fizx/parsley'
 
   depends_on 'json-c'
   depends_on 'pcre'
+  depends_on 'argp-standalone'
 
   def install
-    argpwd = Pathname.getwd+'argp'
-    argpwd.mkpath
-
-    ArgpStandalone.new.brew do
-        system "./configure", "--disable-debug", "--disable-dependency-tracking",
-               "--prefix=#{argpwd}"
-        system "make"
-        argpwd.install ["libargp.a"]
-        argpwd.install ["argp.h", "argp-fmtstream.h", "argp-namefrob.h"]
-    end
+    argp = Formula.factory("argp-standalone").prefix
 
     # remove the refs to /opt/local and use this opportunity to link to argp
-    inreplace 'configure', '-L/opt/local/lib', "-L#{argpwd}"
-    inreplace 'configure', '-I/opt/local/include', "-I#{argpwd}"
+    inreplace 'configure', '-L/opt/local/lib', "-L#{argp}"
+    inreplace 'configure', '-I/opt/local/include', "-I#{argp}"
     system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
     system "make install"
   end