io.files.temp: When using temp-file, it's possible that it fails since

the temporary-directory does not exist yet.

Always check if the directory exists and create it if not.

basis/io/files/temp/temp.factor

@@ -12,7 +12,8 @@ SYMBOL: current-temp-directory
     current-temp-directory get ;
 
 : temp-file ( name -- path )
-    temp-directory prepend-path ;
+    temp-directory
+    [ make-directories ] [ prepend-path ] bi ;
 
 : with-temp-directory ( quot -- )
     [ temp-directory ] dip with-directory ; inline