There is an updated pull request by Piraty against master on the void-packages repository

https://github.com/Piraty/void-packages occt-7.4.0
https://github.com/void-linux/void-packages/pull/15102

[WIP] occt: update to 7.4.0.
Tracking PR.

- [ ] actually build the hole thing locally for all relevant archs
- [x] ~check what freecad says about it~ requires rebuild
- [ ] test the musl patches (anyone?)
- [ ] include env scripts mentioned by @karl-nilsson [here](https://github.com/void-linux/void-packages/pull/15102#issuecomment-538666759)

@karl-nilsson @yopito 

A patch file from https://github.com/void-linux/void-packages/pull/15102.patch is attached