boxfs: add missing includes to fix clang build

pkgs/tools/filesystems/boxfs/default.nix

@@ -32,7 +32,10 @@ in stdenv.mkDerivation {
     cp -a --no-preserve=mode ${libapp} libapp
     cp -a --no-preserve=mode ${libjson} libjson
   '';
-  patches = [ ./work-around-API-borkage.patch ];
+  patches = [
+    ./work-around-API-borkage.patch
+    ./libapp-include-ctype.diff
+  ];
 
   buildInputs = [ curl fuse libxml2 ];
   nativeBuildInputs = [ pkg-config ];

pkgs/tools/filesystems/boxfs/libapp-include-ctype.diff

@@ -0,0 +1,11 @@
+diff --git a/libapp/libapp/app.c b/libapp/libapp/app.c
+index 0188795..f9f1cfa 100644
+--- a/libapp/libapp/app.c
++++ b/libapp/libapp/app.c
+@@ -1,5 +1,6 @@
+ #include "app.h"
+ 
++#include <ctype.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <libgen.h>

pkgs/tools/filesystems/boxfs/work-around-API-borkage.patch

@@ -1,8 +1,16 @@
 diff --git a/boxapi.c b/boxapi.c
-index 4964273..1a32e0d 100644
+index 4964273..e4b7404 100644
 --- a/boxapi.c
 +++ b/boxapi.c
-@@ -38,8 +38,8 @@
+@@ -29,6 +29,7 @@
+ #include <curl/curl.h>
+ 
+ #include <libxml/hash.h>
++#include <libxml/parser.h>
+ 
+ #include <libapp/app.h>
+ /* Building blocks for OpenBox api endpoints
+@@ -38,8 +39,8 @@
  //    AUTH
  #define API_KEY_VAL "f9ss11y2w0hg5r04jsidxlhk4pil28cf"
  #define API_SECRET  "r3ZHAIhsOL2FoHjgERI9xf74W5skIM0w"