I was planning on packaging it, it sounds really helpful for hardware reviewers/overclockers/normal users that want to make sure their temps are okay

Yup, planned on packaging this thing too but better be sure the core team gives approval first :)

FWIW - working upstream to add build support in git https://github.com/flightlessmango/MangoHud/pull/41

It makes the build dependencies obvious (basically just pkgconfig32(gl)) and glslang so hopefully that makes it easier to package. Obviously don't use the script to package it
just configure/build it twice like with LSI.

A nice touch for packaging it would be a link to push it to the explicitly enabled layers, as a subpackage of mangohud. This would then enable mangohud for all vulkan
applications OOTB. Something like mangohud, mangohud-32bit, mangohud-config-enable

Thanks Ikey for providing Solus support upstream.
I gave a quick look around packaging this morning and for now, I don't know how to handle imgGui which is called via a git submodule command in the build.

In that case, use a git source in the ypkg so that submodules are fetched. Make sure to use a specific tag or commit - not master.

So simple...

Thanks for the tip didn't know using git as source also fetched submodules.
I've struggled a bit with vulkan headers until I realized I could use system libs since vulkan headers are packaged.
I've come to an error when trying to build with 32 bits but time's up for today.