open-iscsi: save the staticly linked binary in its own output for use in the initrd

pkgs/os-specific/linux/open-iscsi/default.nix

@@ -1,8 +1,11 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, nukeReferences }:
 let
   pname = "open-iscsi-2.0-873";
 in stdenv.mkDerivation {
   name = "${pname}";
+  outputs = [ "out" "iscsistart" ];
+
+  buildInputs = [ nukeReferences ];
   
   src = fetchurl {
     url = "http://www.open-iscsi.org/bits/${pname}.tar.gz";
@@ -15,6 +18,12 @@ in stdenv.mkDerivation {
     sed -i 's|/usr/|/|' Makefile
   '';
   
+  postInstall = ''
+    mkdir -pv $iscsistart/bin/
+    cp -v usr/iscsistart $iscsistart/bin/
+    nuke-refs $iscsistart/bin/iscsistart
+  '';
+
   meta = {
     description = "A high performance, transport independent, multi-platform implementation of RFC3720";
     license = stdenv.lib.licenses.gpl2Plus;