Hacking on the monitor locally

Easy but slow way:

$ nix develop -c sudo [RUST_BACKTRACE=1] monitor

Harder but faster way:

$ export RUSTFLAGS=-Clink-arg=-fuse-ld=mold
$ cargo build
$ sudo [RUST_BACKTRACE=1] IMAGE_DEPS_DIR=$(nix eval --raw .\#image-deps) LIB_MONITOR_DIR=. target/debug/monitor