Windows install to custom location after building from source

[Tim Golden]

Martin v. Löwis wrote:
>>> Just create an empty one.
>> Won't quite work: merge tries to find full_current_version
>> which is determined (if None) in msi.py from the rather
>> involved current version stuff.
> 
> Only if you don't pass an msi file on the command line. So
> I recommend that you do that.

OK.

> 
>> I'm going to give up on this for tonight, but one possibility
>> is to turn msi.py into an importable module and for msilib
>> to import it and pull the config values from there.
> 
> Please, no. The only way I could accept that if merge.py would
> be run at the end of msi.py (i.e. merge.py disappears).

Understood.

TJG