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-rw-r--r--pkgs/tools/misc/ipxe/default.nix8
1 files changed, 6 insertions, 2 deletions
diff --git a/pkgs/tools/misc/ipxe/default.nix b/pkgs/tools/misc/ipxe/default.nix
index 2d36ad17eec..786b3992a5c 100644
--- a/pkgs/tools/misc/ipxe/default.nix
+++ b/pkgs/tools/misc/ipxe/default.nix
@@ -1,4 +1,6 @@
-{ stdenv, fetchgit, perl, cdrkit, syslinux, xz, openssl }:
+{ stdenv, lib, fetchgit, perl, cdrkit, syslinux, xz, openssl
+, embedScript ? null
+}:
 
 let
   date = "20170922";
@@ -24,7 +26,7 @@ stdenv.mkDerivation {
   makeFlags =
     [ "ECHO_E_BIN_ECHO=echo" "ECHO_E_BIN_ECHO_E=echo" # No /bin/echo here.
       "ISOLINUX_BIN_LIST=${syslinux}/share/syslinux/isolinux.bin"
-    ];
+    ] ++ lib.optional (embedScript != null) "EMBED=${embedScript}";
 
 
   enabledOptions = [ "DOWNLOAD_PROTO_HTTPS" ];
@@ -46,6 +48,8 @@ stdenv.mkDerivation {
     ln -s undionly.kpxe $out/undionly.kpxe.0
   '';
 
+  enableParallelBuilding = true;
+
   meta = with stdenv.lib;
     { description = "Network boot firmware";
       homepage = http://ipxe.org/;