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

https://github.com/biopsin/void-packages patch-1
https://github.com/void-linux/void-packages/pull/29972

libmypaint: update to 1.6.1
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#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

#### Have the results of the proposed changes been tested?
- [x] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR

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#### Comments
mypaint : (2.0.1) remove SVG fix : no "xmlns:ns7" present
gimp : (xlint) see https://github.com/void-linux/void-packages/pull/28353#issuecomment-770355667

Built & installed successfully locally for x86_64/-musl, however I only use/tested gimp.

A patch file from https://github.com/void-linux/void-packages/pull/29972.patch is attached