build nix-static
nix build --impure --expr '(builtins.getFlake "github:NixOS/nix").packages.x86_64-linux.nix-static.overrideAttrs (_: { postPatch = "sed -i /setrlimit/d src/libstore/build/local-derivation-goal.cc src/libutil/util.cc"; })'
# copy `result/bin/nix` to target machine
build nix with custom store path
export NIX_PREFIX="$HOME/nix"