Here's a little proof of concept VM to play with

[mszoek]

I cheated a bit and got a shell. I haven't finished HID yet but we can use the serial keyboard for input. Here is a virtual machine image you can mess around with. Be warned it is VERY MINIMAL. However, it is being updated regularly.

% tree ravynOS.vm
ravynOS.vm
├── Resources
│   ├── OVMF_CODE_4M.fd
│   ├── OVMF_VARS.fd
│   └── disk.img
└── run-ravyn.sh

It uses qemu-system-x86_64 so be sure you have that on your path. Run run-ravyn.sh from a terminal. You will see it boot up and should get console messages both in the framebuffer window (QEMU window) and to the terminal (your serial console). Whatever you type in the terminal will go to the running shell. Filesystem is read-only after boot. You can copy things to/from it by mounting the HFS disk partition on a Linux or Mac system before booting the VM.

losetup -P loop0 ./ravynOS.vm/Resources/disk.img
mount /dev/loop0p2 /mnt
# ... copy or do stuff ...
umount /mnt
losetup -D

[kaascevich]

I've compiled several small, single-file userspace tools on my host Mac and successfully run them in this VM; they include Apple's nologin, stat, and sysctl and FreeBSD's hostname, pwd, realpath, sleep, and sync. For all of these I simply downloaded the single source file from GitHub and compiled it with

$ clang -target x86_64-macos.10.15 -O2 -o $TOOLNAME $TOOLNAME.c

sysctl.c needed an extra -Wno-int-conversion flag, and sleep.c required me to remove lines 98–99 and line 32.

[DarthDensus]

After a working userspace with a solid terminal you guys could eventually think about the integration of a packetmanager like homebrew under macOS. That would help a lot installing usefull CLI-Tools for developing.

[reactive-firewall]

might be able to just port homebrew over

[ashifolfi]

with our goals things like homebrew should be able to simply work as is for the most part. Might need a few tweaks here and there to properly target ravynOS but I doubt it would have many difficulties functioning as long as we have the right functionality implemented on our end.

[reactive-firewall]

Here is a virtual machine image you can mess around with

BTW: the link does not work via curl ... and I'd rather not create a user account just to curl a file

[mszoek]

I've changed the link to one that should work for you.