Files to patch gregorio 6.0.0 to support more NABC neumes and NABC brackets
Go to fonts/truetype/public/gregoriotex/ inside your Latex installation directory
Backup gregall.ttf
Paste gregall.ttf from this repository in this folder
Go to tex/luatex/gregoriotex/ inside your Latex installation directory
Backup gregoriotex-nabc.lua
Paste gregoriotex-nabc.lua from this repository in this folder
If you have installed the other requirements for the NR project, you can now build it.