bootstrap openbsd

-- 0. create and install OpenBSD on QEMU
host$ qemu-img create openbsd.img 10G
host$ qemu-system-x86_64.exe -hda .\openbsd.img -boot d -cdrom .\<BSD_INSTALL_IMG>.iso -m 1024
bsd$  <INSTALL BSD AND THEN HALT>
host$ qemu-system-x86_64.exe -drive file=openbsd.img,if=virtio,format=raw -boot c -m 1024 -net nic -net user,hostfwd=tcp::2222-:22 -nographic -monitor telnet::45454,server,nowait -serial mon:stdio
host$ ssh <USER>@localhost -p 2222

-- 1. configure doas
bsd$ su
bsd# echo permit :wheel > /etc/doas.conf
bsd# usermod -G wheel <USER>
bsd# exit

-- 2. install git
bsd$ doas pkg_add git

-- 3. setup pkgset, see https://dataswamp.org/~solene/2022-05-05-openbsd-declarative-packages-with-pkgset.html
bsd$ git clone https://tildegit.org/solene/pkgset.git
bsd$ cd pkgset && doas make install && cd ..
bsd$ doas touch /etc/pkgset.conf
bsd$ doas chmod g+w /etc/pkgset.conf
bsd$ echo 'vim--no_x11' >> /etc/pkgset.conf
bsd$ doas pkgset