s3fs 1.78 (and add HEAD)

Closes Homebrew/homebrew#33740.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/s3fs.rb

@@ -1,20 +1,30 @@
 require "formula"
 
 class S3fs < Formula
-  homepage "http://code.google.com/p/s3fs/"
-  url "https://github.com/s3fs-fuse/s3fs-fuse/archive/v1.76.tar.gz"
-  sha1 "478aa3230b5d85bfe95d9962ee2f1d8cd35fa070"
-  revision 1
+  homepage "https://code.google.com/p/s3fs/"
+
+  stable do
+    url "https://github.com/s3fs-fuse/s3fs-fuse/archive/v1.78.tar.gz"
+    sha1 "613b448d84451400d3ee14aa9104ba6d9e90bd0b"
+  end
 
   depends_on "pkg-config" => :build
   depends_on "autoconf" => :build
   depends_on "automake" => :build
-  depends_on "openssl"
+  depends_on "gnutls"
+  depends_on "nettle"
+  depends_on "libgcrypt"
+
+  # S3fs currently relies on fuse4x which uses unsigned kexts, barred by Yosemite.
+  # Fuse4x and osxfuse are merging so monitor this over time and switch if/when possible.
   depends_on "fuse4x"
+  depends_on MaximumMacOSRequirement => :mavericks
+
+  head "https://github.com/s3fs-fuse/s3fs-fuse.git"
 
   def install
     system "./autogen.sh"
-    system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
+    system "./configure", "--disable-dependency-tracking", "--with-gnutls", "--prefix=#{prefix}"
     system "make", "install"
   end