New File Format?

[duncan-wither]

I think KiCad has adjusted the file format for libraries (.kicad_sym).
There's a migration option in the project menu (Preferences>Manage Footprint Libraries... > hit the folder button and import a lib -> Migrate Libraries).

I've added a copy (just remove the txt extension):

teensy.kicad_sym.txt

Would it be worth adding this to the repo.

Cheers.

[duncan-wither]

Just found this:

The appropriate library format must be selected in order for the library to be properly read. "KiCad" format is used for KiCad version 6+ libraries (.kicad_sym files), while "Legacy" format is used for libraries from older versions of KiCad (.lib files). Legacy libraries are read-only, but can be migrated to KiCad format libraries using the Migrate Libraries button (see section Migrating Legacy Libraries).

From The KiCad docs