- Build now uses a bare `debootstrap` as a build-sysroot instead of a `chroot` and use its libraries for cross compiling using `crossbuild-essential-*` package using `--sysroot` GCC/G++ flag and `PKG_CONFIG_PATH` to specify path to find `*.pc` files for target arch
- Use node 18 (16 is EOL)
- Fix a potential ambiguous case in scripts/vars.mjs