Fix overriding.

pym/cl_install.py

@@ -49,8 +49,6 @@ def pop_install_errors():
 
 defaultExit = cl_overriding.exit
 defaultPrintERROR = cl_overriding.printERROR
-cl_overriding.exit = installExit
-cl_overriding.printERROR = overprintERROR
 
 from cl_lang import lang
 from cl_fill import clLocale
@@ -779,6 +777,8 @@ class cl_install(color_print, SignalInterrupt):
         self.stdoutHide = None
         self.stderrHide = None
         Spinner().setWriteFunc(self.defaultPrint)
+        cl_overriding.exit = installExit
+        cl_overriding.printERROR = overprintERROR
 
     def setNoColor(self):
         self.color = False