pkg installer installs to inconsistent locations When I install my Xamarin-generated package with the terminal command from Installing .pkg with terminal ?

sudo installer -pkg /path/to/package.pkg -target /


the place it actually gets installed is inconsistent, even from the same package.

Sometimes it goes to Applications. Sometimes it goes to 

myProject/bin/debug


Sometimes it goes to

myProject/bin/Distribution/


What gives?
Installer -target doesn't take an absolute path as an argument it takes a volume.

The installation path is determined when you build the package. Not via the -target flag