There is an updated pull request by gcat432 against master on the void-packages repository

https://github.com/gcat432/void-packages crystal-0.29.0
https://github.com/void-linux/void-packages/pull/12189

crystal: update to 0.29.0.
I need to figure out what is up with Travis not being enabled for my pull request, but locally the package seems to compile just fine.

```
...
=> Creating crystal-0.29.0_1.x86_64.xbps for repository /host/binpkgs/crystal-0.29.0 ...
=> crystal-0.29.0_1: running post-pkg hook: 00-register-pkg ...
=> Registering new packages to /host/binpkgs/crystal-0.29.0
index: added `crystal-0.29.0_1' (x86_64).
index: 1 packages registered.
```

A patch file from https://github.com/void-linux/void-packages/pull/12189.patch is attached