Macos Virtualization

Technically, it is against Apple's terms of service to run apple software on non-apple-brand hardware.

vagrant	https://app.vagrantup.com/monsenso/boxes/macos-10.13
qemu	https://collaboradev.com/2018/10/19/arch-linux-running-osx-high-sierra-in-qemu/

qemu

kholia/OSX-KVM

Mostly-Automated KVM image builder for various MacOS releases.

General
OSX-KVM: Install Setup
OSX-KVM: Troubleshooting
Os Versions
OSX-KVM: High Sierra Install
OSX-KVM: Catalina Install

Instructions/articles

OSX-KVM	https://github.com/kholia/OSX-KVM
instructions on simple macos VM	https://github.com/foxlet/macOS-Simple-KVM
Sierra install instructions	http://www.contrib.andrew.cmu.edu/~somlo/OSXKVM/
Clover in KVM	https://www.kraxel.org/blog/2017/09/running-macos-as-guest-in-kvm/

vagrant

jhcook/macos-sierra     # (10.12) very stable
yzgyyang/macOS-10.14.4  # (10.14) looks promising

virtualbox

macos: virtualbox	tips to install official macos in virtualbox
macos: niresh	unofficial macos distro