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/squid/default.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchurl, perl, openldap, pam, db, cyrus_sasl, libcap
+, expat, libxml2, openssl, pkg-config, systemd
+}:
+
+stdenv.mkDerivation rec {
+  pname = "squid";
+  version = "5.4.1";
+
+  src = fetchurl {
+    url = "http://www.squid-cache.org/Versions/v5/${pname}-${version}.tar.xz";
+    sha256 = "sha256-300xCpFmOuWcKbD4GD8iYjxeb3MYaa95OAWYerlMpBw=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [
+    perl openldap db cyrus_sasl expat libxml2 openssl
+  ] ++ lib.optionals stdenv.isLinux [ libcap pam systemd ];
+
+  configureFlags = [
+    "--enable-ipv6"
+    "--disable-strict-error-checking"
+    "--disable-arch-native"
+    "--with-openssl"
+    "--enable-ssl-crtd"
+    "--enable-storeio=ufs,aufs,diskd,rock"
+    "--enable-removal-policies=lru,heap"
+    "--enable-delay-pools"
+    "--enable-x-accelerator-vary"
+    "--enable-htcp"
+  ] ++ lib.optional (stdenv.isLinux && !stdenv.hostPlatform.isMusl)
+    "--enable-linux-netfilter";
+
+  meta = with lib; {
+    description = "A caching proxy for the Web supporting HTTP, HTTPS, FTP, and more";
+    homepage = "http://www.squid-cache.org";
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ fpletz raskin ];
+  };
+}