core/pkgs/by-name/bu/busybox/packages.nix

{ ... }:
res: pkgs: super:

with pkgs; {
  busybox = callPackage ./. { };
  busybox-sandbox-shell = callPackage ./sandbox-shell.nix {
    # musl roadmap has RISC-V support projected for 1.1.20
    busybox =
      if
        !stdenv.hostPlatform.isRiscV
        && !stdenv.hostPlatform.isLoongArch64
        && stdenv.hostPlatform.libc != "bionic"
      then
        pkgsStatic.busybox
      else
        busybox;
  };
}