Add weechat package (#1903)

packages/weechat.rb

+require 'package'
+
+class Weechat < Package
+  description "WeeChat is a fast, light and extensible chat client."
+  homepage 'http://www.weechat.org/'
+  version '2.0.1'
+  source_url 'https://weechat.org/files/src/weechat-2.0.1.tar.xz'
+  source_sha256 '6943582eabbd8a6fb6dca860a86f896492cae5fceacaa396dbc9eeaa722305d1'
+
+  depends_on 'curl'
+  depends_on 'gnutls'
+  depends_on 'libgcrypt'
+  depends_on 'aspell' => :build
+  depends_on 'cmake' => :build
+  depends_on 'git' => :build
+  depends_on 'lua' => :build
+  depends_on 'perl' => :build
+  depends_on 'pkgconfig' => :build
+  depends_on 'python27' => :build
+  depends_on 'ruby' => :build
+  depends_on 'tcl' => :build
+
+  def self.build
+    system "cmake",
+    		   "-DCMAKE_INSTALL_PREFIX=#{CREW_PREFIX}",
+    	           "-DCMAKE_BUILD_TYPE=Release",
+	 	   "-DENABLE_MAN=ON",
+		   "-DPYTHON_EXECUTABLE=#{CREW_PREFIX}/bin/python2"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end