This is a packaging of the lilyjazz 2.0 font packages and stylesheet for use with the lyp package manager.
Most of the contents is just a rearrangement of Steve Lacy's (@slacy) https://github.com/OpenLilyPondFonts/lilyjazz repository (which itself is based on Abraham Lee's font and lilypond work) to conform to lyp packing standards.
The only added files are:
package.ly, thelyppackaging root.jazzchords_test.ly, a test sheet for a wide variety of jazz chords.morejazz.ily, a number of tweaks to the chord name display, notably- Using a triangle instead of "M" for major 7th chords.
- Adding a few more exotic chord combinations.
- Defining stacked alterations in a way that is more robust to font size variations.
To restore the chord naming in the original package, add \set chordNameExceptions = #JazzChords in your file.
The primary difference between this package and the original lilyjazz lyp package (https://github.com/lyp-packages/lilyjazz) is the use of a somewhat tamer chord font, which also correctly handles sharps and flats in chord symbols.