Add libkrb5 native dependency to libgssapi-sys

This seems to have bitrotted quite recently...

Author: nightkr

default.nix

@@ -15,7 +15,12 @@
       };
       krb5-sys = attrs: {
         nativeBuildInputs = [ pkgs.pkg-config ];
-        buildInputs = [ (pkgs.enableDebugging pkgs.krb5) ];
+        buildInputs = [ pkgs.krb5 ];
+        LIBCLANG_PATH = "${pkgs.libclang.lib}/lib";
+        BINDGEN_EXTRA_CLANG_ARGS = "-I${pkgs.glibc.dev}/include -I${pkgs.clang.cc.lib}/lib/clang/${pkgs.lib.getVersion pkgs.clang.cc}/include";
+      };
+      libgssapi-sys = attrs: {
+        buildInputs = [ pkgs.krb5 ];
         LIBCLANG_PATH = "${pkgs.libclang.lib}/lib";
         BINDGEN_EXTRA_CLANG_ARGS = "-I${pkgs.glibc.dev}/include -I${pkgs.clang.cc.lib}/lib/clang/${pkgs.lib.getVersion pkgs.clang.cc}/include";
       };