Re: SimpleLibraryViews plugin update increases library build time by a factor of 10

> However, it appears that the build time has increased by a factor of
> around 10 (on my LMS it's gone from < 10 seconds to about 90 seconds).
> Another tester has seen a similar increase, from about 30 seconds to
> over 10 minutes.

Can you say what change causes the issue? Maybe you can go back in git 
history to see what commit changed behaviour?

 From a first quick look I was wondering whether it wouldn't be more 
efficient to search for your your simple-library-views-* files, then map 
these to the tracks, rather than the opposite?