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/servers/mautrix-signal/default.nix

@@ -0,0 +1,55 @@
+{ lib, python3, fetchFromGitHub }:
+
+python3.pkgs.buildPythonPackage rec {
+  pname = "mautrix-signal";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    owner = "mautrix";
+    repo = "signal";
+    rev = "v${version}";
+    sha256 = "sha256-khtvfZbqBRQyHteil+H/b3EktjRet6DRcKMHmCClNq0=";
+  };
+
+  propagatedBuildInputs = with python3.pkgs; [
+    CommonMark
+    aiohttp
+    asyncpg
+    attrs
+    mautrix
+    phonenumbers
+    pillow
+    prometheus-client
+    pycryptodome
+    python-olm
+    python-magic
+    qrcode
+    ruamel-yaml
+    unpaddedbase64
+    yarl
+  ];
+
+  doCheck = false;
+
+  postInstall = ''
+    mkdir -p $out/bin
+
+    # Make a little wrapper for running mautrix-signal with its dependencies
+    echo "$mautrixSignalScript" > $out/bin/mautrix-signal
+    echo "#!/bin/sh
+      exec python -m mautrix_signal \"\$@\"
+    " > $out/bin/mautrix-signal
+    chmod +x $out/bin/mautrix-signal
+    wrapProgram $out/bin/mautrix-signal \
+      --set PATH ${python3}/bin \
+      --set PYTHONPATH "$PYTHONPATH"
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/mautrix/signal";
+    description = "A Matrix-Signal puppeting bridge";
+    license = licenses.agpl3Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ expipiplus1 ];
+  };
+}