There is a new pull request by Logarithmus against master on the void-packages repository

https://github.com/Logarithmus/void-packages imv-libheif
https://github.com/void-linux/void-packages/pull/29096

imv: enable HEIF & AVIF support
`imv` supports HEIF & AVIF, but it has to be linked with `libheif` during build for it to work.

A patch file from https://github.com/void-linux/void-packages/pull/29096.patch is attached