code: def convert_cmd_scl(self, scl, cmd):
          
          # load default SCL prefix to PATH
          prefix = self.policy.get_default_scl_prefix()
          # read prefix from /etc/scl/prefixes/${scl} and strip trailing '\n'
          try:
              prefix = open('/etc/scl/prefixes/%s' % scl, 'r').read()\
                       .rstrip('\n')
          except Exception as e:
              self._log_error("Failed to find prefix for SCL %s, using %s"
                              % (scl, prefix))
  
          # expand PATH by equivalent prefixes under the SCL tree
          path = os.environ["PATH"]
          for p in path.split(':'):
              path = '%s/%s%s:%s' % (prefix, scl, p, path)
  
          scl_cmd = "scl enable %s \"PATH=%s %s\"" % (scl, path, cmd)
          return scl_cmd
docs: wrapping command in "scl enable" call and adds proper PATH