ida-free: add hexPatches option

  libxkbcommon,

  makeWrapper,

  openssl,

  perl,

  stdenv,

  libxcb-wm,

  libxcb-render-util,

  libice,

  libxcb,

  zlib,

  hexPatches ? [],

  # hexPatches: hex patterns to substitute in specified files immediately after

  # install. Can be used, for example, to replace the embedded SSL certificates

  # for compatibility with a self-hosted Lumina server.

  # Since IDA is distributed as a binary, such patching is the only recourse

  # available to us for interoperability purposes.

}:

let

  patchScript = lib.concatMapStringsSep "\n" (p:

    let

      forcecntDecl =

        lib.optionalString (p ? assertCount)

          "my $forcecnt = ${toString p.assertCount};";

          in ''

      perl -0777 -pi -e '${forcecntDecl} my $cnt = (s/\Q''${\pack("H*","${p.from}")}\E/''${\pack("H*","${p.to}")}/g) || 0; die "Expected $forcecnt substitutions, did $cnt\n" if defined $forcecnt && $cnt != $forcecnt' "$IDADIR/${p.filename}"

    ''

  ) hexPatches;

in

stdenv.mkDerivation (finalAttrs: {

  pname = "ida-free";

  version = "9.3";

  nativeBuildInputs = [

    makeWrapper

    autoPatchelfHook

    perl

  ];

  # We just get a runfile in $src, so no need to unpack it.

    $(cat $NIX_CC/nix-support/dynamic-linker) $src \

      --mode unattended --prefix $IDADIR

    ${patchScript}

    # Copy the exported libraries to the output.

    cp $IDADIR/libida.so $out/lib