or download this
C:\Users\pryrt\AppData\Local\Temp>cpanm --local-lib=tmplib --test-only
+ Readonly
--> Working on Readonly
...
C:\Users\pryrt\AppData\Local\Temp>perl -Mlocal::lib=tmplib -MReadonly
+-e "print $INC{'Readonly.pm'}"
Attempting to create directory C:\Users\pryrt\AppData\Local\Temp\tmpli
+b
C:\Users\pryrt\AppData\Local\Temp\tmplib\lib\perl5/Readonly.pm