new_contents: import eco
  import os
  from pipeline.compilers import CompilerBase
  
  class EcoCompiler(CompilerBase):
      output_extension = 'js'
  
      def match_file(self, filename):
          return filename.endswith('.eco')
  
      def compile_file(self, content, path):
          p = path.split("/")[::-1]
          return u'(function() {\n  this.JST || (this.JST = {});\n  \
                  this.JST["%s"] = %s;\n \n}).call(this);  ' % (
                      os.path.join(p[3], p[2], p[1], p[0].split(".")[0]), eco.compile(content)
                  )
subject: add Eco Compiler