diff --git a/pkgs/development/tools/misc/pkgconfig/default.nix b/pkgs/development/tools/misc/pkgconfig/default.nix
index 49b2cbfe66e4..2ce1fd7b6e4d 100644
--- a/pkgs/development/tools/misc/pkgconfig/default.nix
+++ b/pkgs/development/tools/misc/pkgconfig/default.nix
@@ -1,15 +1,17 @@
 {stdenv, fetchurl, automake, vanilla ? false}:
 
 stdenv.mkDerivation (rec {
-  name = "pkg-config-0.23";
+  name = "pkg-config-0.28";
   
   setupHook = ./setup-hook.sh;
   
   src = fetchurl {
     url = "http://pkgconfig.freedesktop.org/releases/${name}.tar.gz";
-    sha256 = "0lrvk17724mc2nzpaa0vwybarrl50r7qdnr4h6jijm50srrf1808";
+    sha256 = "0igqq5m204w71m11y0nipbdf5apx87hwfll6axs12hn4dqfb6vkb";
   };
 
+  configureFlags = [ "--with-internal-glib" ];
+
   patches = if vanilla then [] else [
     # Process Requires.private properly, see
     # http://bugs.freedesktop.org/show_bug.cgi?id=4738.
diff --git a/pkgs/development/tools/misc/pkgconfig/requires-private.patch b/pkgs/development/tools/misc/pkgconfig/requires-private.patch
index f5dee097d601..d40aa9801379 100644
--- a/pkgs/development/tools/misc/pkgconfig/requires-private.patch
+++ b/pkgs/development/tools/misc/pkgconfig/requires-private.patch
@@ -1,221 +1,17 @@
-diff -rc pkg-config-0.23-orig/main.c pkg-config-0.23/main.c
-*** pkg-config-0.23-orig/main.c	2008-01-16 23:06:48.000000000 +0100
---- pkg-config-0.23/main.c	2008-10-14 13:04:04.000000000 +0200
-***************
-*** 431,436 ****
---- 431,454 ----
-    else
-      disable_private_libs();
-  
-+   /* Only process Requires field if cflags or libs wanted */
-+   if (want_libs ||
-+       want_cflags ||
-+       want_l_libs ||
-+       want_L_libs ||
-+       want_other_libs ||
-+       want_I_cflags ||
-+       want_other_cflags)
-+     enable_requires();
-+   else
-+     disable_requires();
-+ 
-+   /* Only process Requires.private if static libs wanted */
-+   if (want_static_lib_list)
-+     enable_requires_private();
-+   else
-+     disable_requires_private();
-+ 
-    if (want_my_version)
-      {
-        printf ("%s\n", VERSION);
-diff -rc pkg-config-0.23-orig/parse.c pkg-config-0.23/parse.c
-*** pkg-config-0.23-orig/parse.c	2008-01-16 21:42:49.000000000 +0100
---- pkg-config-0.23/parse.c	2008-10-13 14:41:42.000000000 +0200
-***************
-*** 913,919 ****
-  #endif
-  
-  static void
-! parse_line (Package *pkg, const char *untrimmed, const char *path, gboolean ignore_requires, gboolean ignore_private_libs)
-  {
-    char *str;
-    char *p;
---- 913,921 ----
-  #endif
-  
-  static void
-! parse_line (Package *pkg, const char *untrimmed, const char *path,
-!             gboolean ignore_requires, gboolean ignore_requires_private,
-!             gboolean ignore_private_libs)
-  {
-    char *str;
-    char *p;
-***************
-*** 956,970 ****
-          parse_description (pkg, p, path);
-        else if (strcmp (tag, "Version") == 0)
-          parse_version (pkg, p, path);
-!       else if (strcmp (tag, "Requires.private") == 0)
-! 	parse_requires_private (pkg, p, path);
-!       else if (strcmp (tag, "Requires") == 0)
-! 	{
-!           if (ignore_requires == FALSE)
-! 	    parse_requires (pkg, p, path);
-!           else
-! 	    goto cleanup;
-!         }
-        else if ((strcmp (tag, "Libs.private") == 0) && 
-                 ignore_private_libs == FALSE)
-          parse_libs_private (pkg, p, path);
---- 958,969 ----
-          parse_description (pkg, p, path);
-        else if (strcmp (tag, "Version") == 0)
-          parse_version (pkg, p, path);
-!       else if ((strcmp (tag, "Requires.private") == 0) &&
-!                ignore_requires_private == FALSE)
-!         parse_requires_private (pkg, p, path);
-!       else if ((strcmp (tag, "Requires") == 0) &&
-!                ignore_requires == FALSE)
-!         parse_requires (pkg, p, path);
-        else if ((strcmp (tag, "Libs.private") == 0) && 
-                 ignore_private_libs == FALSE)
-          parse_libs_private (pkg, p, path);
-***************
-*** 1067,1073 ****
-  }
-  
-  Package*
-! parse_package_file (const char *path, gboolean ignore_requires, gboolean ignore_private_libs)
-  {
-    FILE *f;
-    Package *pkg;
---- 1066,1074 ----
-  }
-  
-  Package*
-! parse_package_file (const char *path, gboolean ignore_requires,
-!                     gboolean ignore_requires_private,
-!                     gboolean ignore_private_libs)
-  {
-    FILE *f;
-    Package *pkg;
-***************
-*** 1104,1110 ****
-      {
-        one_line = TRUE;
-        
-!       parse_line (pkg, str->str, path, ignore_requires, ignore_private_libs);
-  
-        g_string_truncate (str, 0);
-      }
---- 1105,1112 ----
-      {
-        one_line = TRUE;
-        
-!       parse_line (pkg, str->str, path, ignore_requires,
-!                   ignore_requires_private, ignore_private_libs);
-  
-        g_string_truncate (str, 0);
-      }
-diff -rc pkg-config-0.23-orig/parse.h pkg-config-0.23/parse.h
-*** pkg-config-0.23-orig/parse.h	2008-01-16 21:42:49.000000000 +0100
---- pkg-config-0.23/parse.h	2008-10-13 14:41:42.000000000 +0200
-***************
-*** 23,28 ****
---- 23,29 ----
-  #include "pkg.h"
-  
-  Package *parse_package_file (const char *path, gboolean ignore_requires,
-+                              gboolean ignore_requires_private,
-                               gboolean ignore_private_libs);
-  
-  Package *get_compat_package (const char *name);
-diff -rc pkg-config-0.23-orig/pkg.c pkg-config-0.23/pkg.c
-*** pkg-config-0.23-orig/pkg.c	2008-01-16 22:59:49.000000000 +0100
---- pkg-config-0.23/pkg.c	2008-10-13 14:41:42.000000000 +0200
-***************
-*** 55,60 ****
---- 55,61 ----
-  
-  gboolean disable_uninstalled = FALSE;
-  gboolean ignore_requires = FALSE;
-+ gboolean ignore_requires_private = FALSE;
-  gboolean ignore_private_libs = TRUE;
-  
-  void
-***************
-*** 337,343 ****
-      }
-  
-    debug_spew ("Reading '%s' from file '%s'\n", name, location);
-!   pkg = parse_package_file (location, ignore_requires, ignore_private_libs);
-    
-    if (pkg == NULL)
-      {
---- 338,345 ----
-      }
-  
-    debug_spew ("Reading '%s' from file '%s'\n", name, location);
-!   pkg = parse_package_file (location, ignore_requires, ignore_requires_private,
-!                             ignore_private_libs);
-    
-    if (pkg == NULL)
-      {
-***************
-*** 1506,1511 ****
---- 1508,1514 ----
-    int mlen = 0;
-    
-    ignore_requires = TRUE;
-+   ignore_requires_private = TRUE;
-  
-    g_hash_table_foreach (locations, max_len_foreach, &mlen);
-    g_hash_table_foreach (locations, packages_foreach, GINT_TO_POINTER (mlen + 1));
-***************
-*** 1522,1524 ****
---- 1525,1551 ----
-  {
-    ignore_private_libs = TRUE;
-  }
-+ 
-+ void
-+ enable_requires(void)
-+ {
-+   ignore_requires = FALSE;
-+ }
-+ 
-+ void
-+ disable_requires(void)
-+ {
-+   ignore_requires = TRUE;
-+ }
-+ 
-+ void
-+ enable_requires_private(void)
-+ {
-+   ignore_requires_private = FALSE;
-+ }
-+ 
-+ void
-+ disable_requires_private(void)
-+ {
-+   ignore_requires_private = TRUE;
-+ }
-diff -rc pkg-config-0.23-orig/pkg.h pkg-config-0.23/pkg.h
-*** pkg-config-0.23-orig/pkg.h	2008-01-16 22:27:19.000000000 +0100
---- pkg-config-0.23/pkg.h	2008-10-13 14:41:42.000000000 +0200
-***************
-*** 120,125 ****
---- 120,131 ----
-  void enable_private_libs(void);
-  void disable_private_libs(void);
-  
-+ void enable_requires(void);
-+ void disable_requires(void);
-+ 
-+ void enable_requires_private(void);
-+ void disable_requires_private(void);
-+ 
-  /* If TRUE, do not automatically prefer uninstalled versions */
-  extern gboolean disable_uninstalled;
-  
+diff --git a/main.c b/main.c
+index b61ca34..5a420c2 100644
+--- a/main.c
++++ b/main.c
+@@ -602,10 +602,10 @@ main (int argc, char **argv)
+   else
+     disable_private_libs();
+ 
+-  /* honor Requires.private if any Cflags are requested or any static
++  /* honor Requires.private if any any static
+    * libs are requested */
+ 
+-  if (pkg_flags & CFLAGS_ANY || want_requires_private || want_exists ||
++  if (want_requires_private ||
+       (want_static_lib_list && (pkg_flags & LIBS_ANY)))
+     enable_requires_private();
+