Fix setup for Windows
Fix setup for Windows

lpsinger/astropy,saimn/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,saimn/astropy,lpsinger/astropy,pllim/astropy,dhomeier/astropy,mhvk/astropy,dhomeier/astropy,saimn/astropy,aleksandr-bakanov/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,pllim/astropy,saimn/astropy,dhomeier/astropy,StuartLittlefair/astropy,mhvk/astropy,dhomeier/astropy,mhvk/astropy,StuartLittlefair/astropy,larrybradley/astropy,pllim/astropy,astropy/astropy,larrybradley/astropy,StuartLittlefair/astropy,mhvk/astropy,mhvk/astropy,astropy/astropy,pllim/astropy,lpsinger/astropy,astropy/astropy,astropy/astropy,saimn/astropy,lpsinger/astropy,StuartLittlefair/astropy,astropy/astropy,larrybradley/astropy,lpsinger/astropy,pllim/astropy