Hi James,
Do you still need someone to test this? The link below no longer works (Expired?).
Here are installers for lilypond with the cairo backend after a significant remix by Han-Wen. GUB has been changed to use a cairo version that fixes three bugs relevant for lilypond, a test would be nice. Nobody reported a test of the darwin-x86 installer ... do we have any users of those old systems? Installers for dev/hanwen/cairo-wip version ac1ad549 <https://gitlab.com/lilypond/lilypond/-/merge_requests/853/diffs?commit_id=ac1ad549a67429ae9e67effccbc356fab5a3ebd8>, built with https://github.com/knupero/gub <https://github.com/knupero/gub> (uses cairo 1.17.4 git 6872490e77fb2): Installer linux-64 <https://drive.google.com/file/d/1B-V6HySoVuR5NJV9O2OtY2Lsdv6kIxEO/view?usp=sharing> Installer linux-x86 <https://drive.google.com/file/d/128Qw1yZgS4MDiMOIZxDStkjhyTyOFdAz/view?usp=sharing> Installer mingw <https://drive.google.com/file/d/16sijOAR8-pmIy-bneaaTIoh9droijEnE/view?usp=sharing> Installer darwin-x86 <https://drive.google.com/file/d/1T8CWT2LgfnznBsT_QZF2C473Uchxj7eC/view?usp=sharing> Knut