apparmor: fix build by using older perl

This is work around #5270.
Also bogus path in wrapper got fixed.

CC: maintainers @phreedom, @thoughtpolice.
It would be better to test this as well by someone who actually uses it.

pkgs/os-specific/linux/apparmor/default.nix

@@ -77,9 +77,13 @@ stdenv.mkDerivation rec {
     cd ..
     cp -r  kernel-patches $out
   '';
-  installPhase = ''
+
+  installPhase = let
+    perlVersion = (builtins.parseDrvName perl.name).version;
+  in ''
     for i in $out/bin/*;  do
-      wrapProgram $i --prefix PERL5LIB : "$PERL5LIB:$out/lib/perl5/5.10.1/i686-linux-thread-multi/"
+      wrapProgram $i --prefix PERL5LIB : \
+        "$PERL5LIB:$out/lib/perl5/${perlVersion}/${stdenv.system}-thread-multi/"
     done
   '';
 

pkgs/top-level/all-packages.nix

@@ -7956,6 +7956,7 @@ let
   apparmor = callPackage ../os-specific/linux/apparmor {
     inherit (perlPackages) LocaleGettext TermReadKey RpcXML;
     bison = bison2;
+    perl = perl516; # ${perl}/.../CORE/handy.h:124:34: error: 'bool' undeclared
   };
 
   atop = callPackage ../os-specific/linux/atop { };