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/sks/adapt-to-nixos.patch

@@ -0,0 +1,27 @@
+--- a/version.ml	2018-09-08 15:56:18.919154257 +0200
++++ b/version.ml	2018-09-08 15:56:07.544028575 +0200
+@@ -24,16 +24,6 @@
+ 
+ let run () =
+   let bdb_version = Bdb.version () in
+-  let dbstats_dir =
+-    let split = Str.regexp_string "." in
+-    let major_minor_string major minor =
+-      sprintf "Further details about the BDB environment can be seen by \
+-	  executing\ndb%s.%s_stat -x in the KDB and Ptree directories\n" major minor
+-    in
+-    match Str.split split bdb_version with
+-    | major :: minor :: _ -> major_minor_string major minor
+-    | [] | _ :: []        -> major_minor_string "X"   "Y"
+-  in
+   printf "SKS version %s%s\n"
+     Common.version Common.version_suffix;
+ 	
+@@ -44,5 +34,6 @@
+          requirement for recon of SKS %s\n"
+       Common.compatible_version_string;
+ 	
+-  printf "%s" dbstats_dir
++  printf "Further details about the BDB environment can be seen by executing\n\
++    db_stat -x in the KDB and PTree directories\n"
+ 

pkgs/servers/sks/default.nix

@@ -0,0 +1,66 @@
+{ lib, stdenv, fetchFromGitHub, ocamlPackages, perl
+, zlib, db
+}:
+
+let
+  inherit (ocamlPackages)
+    ocaml
+    findlib
+    cryptokit
+    num
+    ;
+in
+
+stdenv.mkDerivation rec {
+  pname = "sks";
+  version = "unstable-2021-02-04";
+
+  src = fetchFromGitHub {
+    owner = "SKS-Keyserver";
+    repo = "sks-keyserver";
+    rev = "c3ba6d5abb525dcb84745245631c410c11c07ec1";
+    sha256 = "0fql07sc69hv6jy7x5svb19977cdsz0p1j8wv53k045a6v7rw1jw";
+  };
+
+  # pkgs.db provides db_stat, not db$major.$minor_stat
+  patches = [
+    ./adapt-to-nixos.patch
+  ];
+
+  outputs = [ "out" "webSamples" ];
+
+  nativeBuildInputs = [ ocaml findlib perl ];
+  buildInputs = [ zlib db cryptokit num ];
+
+  makeFlags = [ "PREFIX=$(out)" "MANDIR=$(out)/share/man" ];
+  preConfigure = ''
+    cp Makefile.local.unused Makefile.local
+    sed -i \
+      -e "s:^LIBDB=.*$:LIBDB=-ldb:g" \
+      Makefile.local
+  '';
+
+  preBuild = "make dep";
+
+  doCheck = true;
+  checkPhase = "./sks unit_test";
+
+  # Copy the web examples for the NixOS module
+  postInstall = "cp -R sampleWeb $webSamples";
+
+  meta = with lib; {
+    description = "An easily deployable & decentralized OpenPGP keyserver";
+    longDescription = ''
+      SKS is an OpenPGP keyserver whose goal is to provide easy to deploy,
+      decentralized, and highly reliable synchronization. That means that a key
+      submitted to one SKS server will quickly be distributed to all key
+      servers, and even wildly out-of-date servers, or servers that experience
+      spotty connectivity, can fully synchronize with rest of the system.
+    '';
+    inherit (src.meta) homepage;
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ fpletz globin ];
+  };
+}
+