Lilypond 2.13.10

A tool for creating quality sheet music.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/lilypond.rb

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+require 'formula'
+
+class Lilypond <Formula
+  url 'http://download.linuxaudio.org/lilypond/sources/v2.13/lilypond-2.13.23.tar.gz'
+  homepage 'http://lilypond.org/'
+  md5 '741190abdd2217cf9f4ea6abff66accf'
+
+  depends_on 'pkg-config'
+  # The guile version must be < 1.9
+  depends_on 'guile'
+  depends_on 'gettext'
+  depends_on 'ghostscript'
+  depends_on 'pango'
+  depends_on 'mftrace'
+  depends_on 'fontforge'
+  depends_on 'texinfo'
+
+  def skip_clean? path; true; end
+
+  def install
+    system "./configure", "--prefix=#{prefix}",
+                          "--with-ncsb-dir=#{Formula.factory('ghostscript').share}/ghostscript/fonts/"
+
+    # Separate steps to ensure that lilypond's custom fonts are created.
+    system "make"
+    system "make install"
+  end
+
+  def caveats
+    "Lilypond requires a version of TeX, such as TeX Live or MacTeX, prior to installing."
+  end
+end