title: Using aleph with SWI-prolog: source_sink `library(aleph)' does not exist
body: <p>I’m trying to import Aleph with SWI-Prolog. When I run my program I get the error below. What do I have to do to import <code>library(aleph)</code>? By the way, I have already downloaded <code>aleph.pl</code> for my program.
  Here is my test program, I know there must be something wrong with the library aleph.</p>
  <pre><code>:- use_module(library(aleph)).
  :- aleph.
  </code></pre>
  <p>I got the error:</p>
  <pre><code>ERROR: c:/users/mac/desktop/swi-prolog/aleph draft/1.pl:1:
      source_sink `library(aleph)' does not exist
  Warning: c:/users/mac/desktop/swi-prolog/aleph draft/1.pl:1:
          Goal (directive) failed: user:use_module(library(aleph))
  ERROR: c:/users/mac/desktop/swi-prolog/aleph draft/1.pl:2:
          catch/3: Undefined procedure: aleph/0
  Warning: c:/users/mac/desktop/swi-prolog/aleph draft/1.pl:2:
          Goal (directive) failed: user:aleph
  Welcome to SWI-Prolog (threaded, 32 bits, version 7.6.4)
  </code></pre>