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/rainloop/default.nix

@@ -0,0 +1,59 @@
+{ lib, stdenv, fetchurl, unzip, pkgs, dataPath ? "/var/lib/rainloop" }: let
+  common = { edition, sha256 }:
+    stdenv.mkDerivation (rec {
+      pname = "rainloop${lib.optionalString (edition != "") "-${edition}"}";
+      version = "1.16.0";
+
+      nativeBuildInputs = [ unzip ];
+
+      unpackPhase = ''
+        mkdir rainloop
+        unzip -q -d rainloop $src
+      '';
+
+      src = fetchurl {
+        url = "https://github.com/RainLoop/rainloop-webmail/releases/download/v${version}/rainloop-${edition}${lib.optionalString (edition != "") "-"}${version}.zip";
+        sha256 = sha256;
+      };
+
+      includeScript = pkgs.writeText "include.php" ''
+        <?php
+
+        /**
+         * @return string
+         */
+        function __get_custom_data_full_path()
+        {
+          $v = getenv('RAINLOOP_DATA_DIR', TRUE);
+          return $v === FALSE ? '${dataPath}' : $v;
+        }
+      '';
+
+      installPhase = ''
+        mkdir $out
+        cp -r rainloop/* $out
+        rm -rf $out/data
+        cp ${includeScript} $out/include.php
+        mkdir $out/data
+        chmod 700 $out/data
+      '';
+
+      meta = with lib; {
+        description = "Simple, modern & fast web-based email client";
+        homepage = "https://www.rainloop.net";
+        downloadPage = "https://github.com/RainLoop/rainloop-webmail/releases";
+        license = with licenses; if edition == "" then unfree else agpl3;
+        platforms = platforms.all;
+        maintainers = with maintainers; [ das_j ];
+      };
+    });
+in {
+  rainloop-community = common {
+    edition = "community";
+    sha256 = "sha256-25ScQ2OwSKAuqg8GomqDhpebhzQZjCk57h6MxUNiymc=";
+  };
+  rainloop-standard = common {
+    edition = "";
+    sha256 = "sha256-aYCwqFqhJEeakn4R0MUDGcSp+M47JbbCrbYaML8aeSs=";
+  };
+}