fomu-gcc.nix

let
  # point to recent (08/23) nixpkgs
  native = import (<nixpkgs>) {};
  pkgs = import (<nixpkgs>) {
   crossSystem = {
     config = "riscv32-none-elf";
     libc = "newlib";
     platform = (native.platforms.riscv-multiplatform "32") // { gcc.arch = "rv32i"; };
   };
  };
in
pkgs.mkShell {
  nativeBuildInputs = with native; [
    pkgs.buildPackages.gdb
    nextpnr yosys icestorm
    wishbone-tool dfu-util
    screen
  ];
  hardeningDisable = [ "all" ];
  shellHook = ''
    alias fomu-reboot="wishbone-tool 0xe0006000 0xac"
  '';
}