On Mon, Jul 3, 2017 at 11:27 PM, Mitch Francis <[email protected]>
wrote:

> I tried this approach, but running into issues when loading a module
>
> scheme@(guile-user)>  (use-modules (opencog))
> While compiling expression:
> ERROR: no code for module (opencog)
>

You almost surely need to say
 (add-to-load-path "/usr/local/share/opencog/scm")


it might also be convenient to add

 (use-modules (ice-9 readline))
  (activate-readline)

(debug-enable 'backtrace)
; Record positions of source code expressions.
  (read-enable 'positions)

(add-to-load-path ".")

Its convenient to cut n paste those into ~/.guile



> I saw on github that someone mentioned manually copying the modules into
> the Guile module path. Can someone provide more clarification on what to
> copy?
>

Don't copy. Just add /usr/local/share/opencog/scm to the search path, as
above.

In the long run, perhaps we should just copy to where guile finds these by
default.

>
> Also tried to run CogServer compiled using PostgreSQL 9.5 (Ubuntu 16.04),
> and am unable to access the SQL commands (sql-load, sql-open, etc). No
> error was reported
>

   (use-modules (opencog persist) (opencog persist-sql))

--linas


> On Thursday, June 8, 2017 at 3:08:23 PM UTC-7, linas wrote:
>>
>>
>>
>> On Thu, Jun 8, 2017 at 2:22 AM, Roman Treutlein <[email protected]>
>> wrote:
>>
>>> Hey,
>>>
>>> so this is mainly a question to linas. You seem to want to get rid of
>>> the CogServer and I was wondering what exactly you would prefer in its
>>> place.
>>> The way I see it the CogServer currently serves a vital role in the
>>> whole Architecture by providing a way for all the different parts of
>>> OpenCog to come together in one place.
>>> And by managing a bunch of threads used by the various modules.
>>>
>>
>> Except it does none of these things. You can use opencog, via both python
>> and scheme, without ever starting the cogserver.  You can use both python
>> and guile together, even, without starting the cogserver.
>>
>> Now, the cogserver provides a network interface, but so does guile, and I
>> presume that there's some generic python module out there that would do
>> this too.  So you can start the a scheme or a python network server, and
>> remotely log into opencog, without ever actually starting the cogserver.
>> So basically, the cogserver isn't needed for neworking.
>>
>> I'll bet Haskel also has some network server module, too. I'll bet that
>> at least some of these network modules might be pretty fancy, providing
>> encryption, login credentials, other security bells and whistles that we
>> sure-as-shootin are never going to add to the cogserver.  And we shouldn't
>> -- it breaks the concept of modular design.  If some module out there
>> provides secure, safe, audited, encrypted network access, we should use
>> that. We should not reinvent the wheel, badly, (which is what we've done)
>> by putting this function in the cogserver.  We should remove this
>> mis-feature, not enhance it.
>>
>> So what else does the cogserver do? Well, it manages "mind-agents".
>> Except (1) the code for managing mind-agents is badly implemented and
>> completely buggy, and (2) you do NOT need a cogserver to manage a pool of
>> mindagents!  These are completely distinct, unrelated concepts that, due to
>> historical accident, got mashed together into one.
>>
>> If the mind-agent code was redesigned so that it worked correctly, and so
>> that it was a stand-alone module, instead of a lean-to, then the cogserver
>> would become just a network server, and nothing more, and, as I say, there
>> are surely better network servers out there.  The cogserver is currently a
>> crutch, a hack job.
>>
>>
>>
>>>
>>> And those seem to be functions that we will always need. So I don't
>>> really see how the CogServer could be replaced. Improved and Changed sure
>>> but not replaced.
>>>
>>> So how do you see OpenCog working without a CogServer?
>>>
>>
>> Well, easy. I do this every day, all the time. I only rarely start the
>> cogserver.  So, for example, in guile
>>
>> $ guile
>> guile> (use-modules (opencog))
>> guile> (use-modules (system repl server))
>> guile> (call-with-new-thread run-server)
>>
>> Then  in another shell:
>> telnet localhost 37146
>> that's the default port nummber. To change it, see
>> https://www.gnu.org/software/guile/manual/html_node/REPL-Servers.html
>>
>> then guile> (Concept "foo")
>>
>> Bingo! -- you've just used the atomspace -- logging in remotely, using a
>> two-line replacement for the cogserver. One line to load the network
>> module, one line to start the network module. What do we need a cogserver
>> for, again?
>>
>> I'm sure you can get something similar in python and heskel.
>>
>> --linas
>>
>>
>>>
>>> best regards
>>>
>>> Roman
>>>
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>>

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