fasmg: add updateScript, kd3c -> kl0e (#349661)

{ lib, stdenv

, fetchzip

# update script

, writeScript

, coreutils

, curl

, gnugrep

, htmlq

, nix-update

}:

stdenv.mkDerivation rec {

  pname = "fasmg";

  version = "kd3c";

  version = "kl0e";

  src = fetchzip {

    url = "https://flatassembler.net/fasmg.${version}.zip";

    sha256 = "sha256-duxune/UjXppKf/yWp7y85rpBn4EIC6JcZPNDhScsEA=";

    sha256 = "sha256-qUhsUMwxgUduGz+D8+Dm4EXyh7aiE9lJ1mhvTjHP6Tw=";

    stripRoot = false;

  };

    cp docs/*.txt $doc/share/doc/fasmg

  '';

  passthru.updateScript = writeScript "update-fasmg.sh" ''

    export PATH="${lib.makeBinPath [ coreutils curl gnugrep htmlq nix-update ]}:$PATH"

    version=$(

      curl 'https://flatassembler.net/download.php' \

        | htmlq .links a.boldlink  -a href \

        | grep -E '^fasmg\..*\.zip$' \

        | head -n1 \

        | cut -d. -f2

    )

    nix-update fasmg --version "$version"

  '';

  meta = with lib; {

    description = "x86(-64) macro assembler to binary, MZ, PE, COFF, and ELF";

    mainProgram = "fasmg";