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/shishi/default.nix

@@ -0,0 +1,82 @@
+{ lib, stdenv, fetchurl, pkg-config
+, libgcrypt, libgpg-error, libtasn1
+
+# Optional Dependencies
+, pam ? null, libidn ? null, gnutls ? null
+}:
+
+let
+  mkFlag = trueStr: falseStr: cond: name: val: "--"
+    + (if cond then trueStr else falseStr)
+    + name
+    + lib.optionalString (val != null && cond != false) "=${val}";
+  mkEnable = mkFlag "enable-" "disable-";
+  mkWith = mkFlag "with-" "without-";
+  mkOther = mkFlag "" "" true;
+
+  shouldUsePkg = pkg: if pkg != null && lib.meta.availableOn stdenv.hostPlatform pkg then pkg else null;
+
+  optPam = shouldUsePkg pam;
+  optLibidn = shouldUsePkg libidn;
+  optGnutls = shouldUsePkg gnutls;
+in
+with lib;
+stdenv.mkDerivation rec {
+  pname = "shishi";
+  version = "1.0.2";
+
+  src = fetchurl {
+    url = "mirror://gnu/shishi/shishi-${version}.tar.gz";
+    sha256 = "032qf72cpjdfffq1yq54gz3ahgqf2ijca4vl31sfabmjzq9q370d";
+  };
+
+  # Fixes support for gcrypt 1.6+
+  patches = [ ./gcrypt-fix.patch ./freebsd-unistd.patch ];
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ libgcrypt libgpg-error libtasn1 optPam optLibidn optGnutls ];
+
+  configureFlags = [
+    (mkOther                      "sysconfdir"    "/etc")
+    (mkOther                      "localstatedir" "/var")
+    (mkEnable true                "libgcrypt"     null)
+    (mkEnable (optPam != null)    "pam"           null)
+    (mkEnable true                "ipv6"          null)
+    (mkWith   (optLibidn != null) "stringprep"    null)
+    (mkEnable (optGnutls != null) "starttls"      null)
+    (mkEnable true                "des"           null)
+    (mkEnable true                "3des"          null)
+    (mkEnable true                "aes"           null)
+    (mkEnable true                "md"            null)
+    (mkEnable false               "null"          null)
+    (mkEnable true                "arcfour"       null)
+  ];
+
+  NIX_CFLAGS_COMPILE
+    = optionalString stdenv.isDarwin "-DBIND_8_COMPAT";
+
+  doCheck = true;
+
+  installFlags = [ "sysconfdir=\${out}/etc" ];
+
+  # Fix *.la files
+  postInstall = ''
+    sed -i $out/lib/libshi{sa,shi}.la \
+  '' + optionalString (optLibidn != null) ''
+      -e 's,\(-lidn\),-L${optLibidn.out}/lib \1,' \
+  '' + optionalString (optGnutls != null) ''
+      -e 's,\(-lgnutls\),-L${optGnutls.out}/lib \1,' \
+  '' + ''
+      -e 's,\(-lgcrypt\),-L${libgcrypt.out}/lib \1,' \
+      -e 's,\(-lgpg-error\),-L${libgpg-error.out}/lib \1,' \
+      -e 's,\(-ltasn1\),-L${libtasn1.out}/lib \1,'
+  '';
+
+  meta = {
+    homepage    = "https://www.gnu.org/software/shishi/";
+    description = "An implementation of the Kerberos 5 network security system";
+    license     = licenses.gpl3Plus;
+    maintainers = with maintainers; [ bjg lovek323 ];
+    platforms   = platforms.linux;
+  };
+}