What I broke my system with: multiple efi, dm shenanigans, post update hook fails, etc. This has helped every time since I started it, evolving per fix. It can usually get it working by using a bootable usb and running fix all. it also makes it easy to chroot for new issues. this is still not perfect, because now I have a bunch of options in refind, but at least one of them works.
fyi: there are multiple versions
zig is new for cosmopolitan (haven't fully tested)
C+clay+cosmo
D version best
From gradle migrations to hex and rebar build trees; it is a tool for version solving and regex replace and restructure plans to deal with breaking version changes. also has a skill to generate yaml migration patterns
GITHUB LINK IS STALE, USE CODEBERG INSTEAD
