failPythonVersion: function failPythonVersion (badVersion) {
var errmsg =
'Python executable "' + this.python +
'" is v' + badVersion + ', which is not supported by gyp.\n' +
'You can pass the --python switch to point to ' +
'Python >= v2.5.0 & < 3.0.0.'
this.callback(new Error(errmsg))
},