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

https://github.com/tibequadorian/void-packages imlib2
https://github.com/void-linux/void-packages/pull/35612

imlib2: update to 1.8.0, add build options.
imlib2 contains a HEIF loader since 1.8.0
- closes #27814
- closes #27597 

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A patch file from https://github.com/void-linux/void-packages/pull/35612.patch is attached