It's proved rather more complicated than I was expecting but I've been able to produce a very generic set of scripts for producing installers with NSIS (used by WinAmp among other things).
These scripts combine the best features of those I've used to produce the UKGTR skin and ballast pack, and the various track installers I've churned out over the past few months. They allow an installer to be written very quickly and easily for any mod for GTR2 or GTL.
You can download the scripts from
this link. I'm expecting anyone planning to use it to be prepared to use some initiative - this is one of the simplest bits of testing and preparing a mod for league use so if it's too much for you you probably shouldn't be doing this type of work.
I'm hoping we can use these scripts to provide a common installation/uninstallation mechanism for all future SRou mods, at least for GTR2 and GTL, and gradually phase the use of ModMan for GTL stuff out as that seems to have become abandonware. :-(