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/backup/discordchatexporter-cli/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildDotnetModule
+, fetchFromGitHub
+, dotnetCorePackages
+, testers
+, discordchatexporter-cli
+}:
+
+buildDotnetModule rec {
+  pname = "discordchatexporter-cli";
+  version = "2.34.1";
+
+  src = fetchFromGitHub {
+    owner = "tyrrrz";
+    repo = "discordchatexporter";
+    rev = version;
+    sha256 = "U+AwxHvyLD2BwrJH3h0yKKHBsgBM/D657TuG9IgllPs=";
+  };
+
+  projectFile = "DiscordChatExporter.Cli/DiscordChatExporter.Cli.csproj";
+  nugetDeps = ./deps.nix;
+
+  postFixup = ''
+    ln -s $out/bin/DiscordChatExporter.Cli $out/bin/discordchatexporter-cli
+  '';
+
+  passthru = {
+    updateScript = ./updater.sh;
+    tests.version = testers.testVersion {
+      package = discordchatexporter-cli;
+      version = "v${version}";
+    };
+  };
+
+  meta = with lib; {
+    description = "A tool to export Discord chat logs to a file";
+    homepage = "https://github.com/Tyrrrz/DiscordChatExporter";
+    license = licenses.gpl3Plus;
+    changelog = "https://github.com/Tyrrrz/DiscordChatExporter/blob/${version}/Changelog.md";
+    maintainers = [ maintainers.ivar ];
+    platforms = [ "x86_64-linux" ];
+  };
+}