hpe-ltfs: fix build

pkgs/tools/backup/hpe-ltfs/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, fuse, icu, pkg-config, libxml2, libuuid }:
+{ lib, stdenv, fetchFromGitHub, fuse, icu66, pkg-config, libxml2, libuuid }:
 
 stdenv.mkDerivation rec {
   version = "3.4.2_Z7550-02501";
@@ -13,10 +13,15 @@ stdenv.mkDerivation rec {
 
   sourceRoot = "source/ltfs";
 
+  # include sys/sysctl.h is deprecated in glibc. The sysctl calls are only used
+  # for Apple to determine the kernel version. Because this build only targets
+  # Linux is it safe to remove.
+  patches = [ ./remove-sysctl.patch ];
+
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [
-    fuse icu libxml2 libuuid
+    fuse icu66 libxml2 libuuid
   ];
 
   meta = with lib; {

pkgs/tools/backup/hpe-ltfs/remove-sysctl.patch

@@ -0,0 +1,14 @@
+diff --git a/src/libltfs/arch/arch_info.c b/src/libltfs/arch/arch_info.c
+index 179428f..114acf0 100644
+--- a/src/libltfs/arch/arch_info.c
++++ b/src/libltfs/arch/arch_info.c
+@@ -47,9 +47,6 @@
+ */
+ 
+ #include "libltfs/ltfs.h"
+-#ifndef mingw_PLATFORM
+-#include <sys/sysctl.h>
+-#endif
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <unistd.h>