Update the libboost hack
Update the libboost hack

This cuts about 46 MiB from the closure.

NixOS/nix,dtzWill/nix,NixOS/nix,rycee/nix,NixOS/nix,ehmry/nix,rycee/nix,NixOS/nix,pikajude/nix,dtzWill/nix,dtzWill/nix,ehmry/nix,pikajude/nix,dtzWill/nix,rycee/nix,pikajude/nix,ehmry/nix,dtzWill/nix,rycee/nix,rycee/nix,ehmry/nix,ehmry/nix,NixOS/nix,ehmry/nix