uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/text/gpt2tc/0001-add-python-shebang.patch

@@ -0,0 +1,10 @@
+diff --git a/gpt2convert.py b/gpt2convert.py
+index 34ca909..6e6cac5 100644
+--- a/gpt2convert.py
++++ b/gpt2convert.py
+@@ -1,3 +1,5 @@
++#!/usr/bin/env python3
++
+ import sys
+ import tensorflow as tf
+ import numpy as np

pkgs/tools/text/gpt2tc/default.nix

@@ -0,0 +1,44 @@
+{ lib, stdenv, fetchurl, autoPatchelfHook, python3 }:
+
+stdenv.mkDerivation rec {
+  pname = "gpt2tc";
+  version = "2021-04-24";
+
+  src = fetchurl {
+    url = "https://bellard.org/libnc/gpt2tc-${version}.tar.gz";
+    hash = "sha256-kHnRziSNRewifM/oKDQwG27rXRvntuUUX8M+PUNHpA4=";
+  };
+
+  patches = [
+    # Add a shebang to the python script so that nix detects it as such and
+    # wraps it properly. Otherwise, it runs in shell and freezes the system.
+    ./0001-add-python-shebang.patch
+  ];
+
+  nativeBuildInputs = [ autoPatchelfHook ];
+
+  buildInputs = [
+    (python3.withPackages (p: with p; [ numpy tensorflow ]))
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    install -D -m755 -t $out/lib libnc${stdenv.hostPlatform.extensions.sharedLibrary}
+    addAutoPatchelfSearchPath $out/lib
+    install -D -m755 -t $out/bin gpt2tc
+    install -T -m755 download_model.sh $out/bin/gpt2-download-model
+    install -T -m755 gpt2convert.py $out/bin/gpt2-convert
+    install -D -m644 -t $out/share/gpt2tc readme.txt gpt2vocab.txt Changelog
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Text completion and compression using GPT-2";
+    homepage = "https://bellard.org/libnc/gpt2tc.html";
+    license = licenses.unfree;
+    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ anna328p ];
+  };
+}