Thank you for this work.

Indeed a couple of minor releases quite recently, and I was not subbed to notifications.

There is some reports with dependency compilation/use trouble about 4.1.{4,5}: TechSmith/mp4v2#47

So let us check a couple of those.

@GrahamcOfBorg build mixxx

Packages have trouble finding dev files (ERROR:root:Unmet dependency: Could not find libmp4, libmp4v2 or the libmp4v2 development headers..

Since you are at it - please, try to add split outputs to the package:

outputs = [ "bin" "dev" "out" "doc" ];

and see what sticks(populates).

At least from https://packages.debian.org/stretch/amd64/libmp4v2-dev/download it seems that dev output is there.

Or we can merge as is, and I would attend further.

try to add split outputs to the package:

Sure, I added outputs = [ "out" "dev" "lib" ]; because doc doesn't seem to work

@GrahamcOfBorg build faac

@GrahamcOfBorg build mixxx

Now we fixed the build error in mixxx, and so now it falls under unresolved dependencies - which is mixxx package config territory.

I consider these improvements as ready for a merge.

@GrahamcOfBorg build mp4v2

Looking at this again, it breaks cmus and mixxx. Closing this PR for now, sorry for the noise
I pushed the darwin fix in b60acf2

This was only a 25 days ago, feels like millennia.

With all this seems would wait for the 4.1.6.

I while ago rebased this fossil to the maintained fork, but most Linux distros would not.
But again - this is a half-alive fork of a fossil package.

If most distros do not use the fork - we updating would probably hit a difference and would have a wall with compiling the dependent packages.

If bot would not update it - I check lesser packages I have like 2 times a year.