Although Audacity 3.1.3 includes FFmpeg in its direct dependencies, it does not keep a reference to it and cannot find it at runtime.
This is a regression from Audacity 2.4.2. ------ $ git describe v1.3.0-15323-gf00ed43653 $ guix gc --references $(./pre-inst-env guix build --no-grafts audacity) | grep ffmpeg ------
