New comment by ar-jan on void-packages repository

https://github.com/void-linux/void-packages/pull/40347#issuecomment-1307460826

Comment:
Ah great. I've also been testing proj 9.1.0 and I thought there's a few more things to solve. Here's my notes:

- grass: v7.6 still uses `proj_api.h`, but the build does succeed. [Do you know if it functions correctly without proj4 api?]
- XyGrib: can be patched like https://github.com/opengribs/XyGrib/pull/289 [I see you used that].
- merkaartor: with `DACCEPT_USE_OF_DEPRECATED_PROJ_API_H` removed, build still failed for me. Did it build correctly for you?
- vtk: current version fails due to proj_api.h, but it can be upgraded to >= 9.1.0 to fix.