change default setup cache dir to %OSGEO4W_ROOT%\var\cache\setup\

[maphew]

Please consider changing the default cache for osgeo4w-setup.exe to %OSGEO4W_ROOT%\var\cache\setup\. This would enable wiki:pkg-apt to share the cache with a minimum of fuss.

The install root is set in step #3 "OSGeo4W Setup - Choose Installation Directory", while cache is set in step #4 ""OSGeo4W Setup - Select Local Package Directory". So I think it should be possible.

Con: - Slightly more difficult to erase o4w and start over. With the default package directory in the same folder as osgeo-setup.exe one can simply delete %OSGEO4W_ROOT% and run setup again without forcing a new download. If the packages are under %OSGEO4W_ROOT%\var deletion needs to be more selective. In my opinion the tradeoff is worth it. We can write a "delete all but download cache" script if need be.

[maphew]

better to go the other way around, have apt use ./var/cache/setup/last-cache the same as setup.exe