Hi Jörg,

Can you please spell out what happens when you run "pdl" (which is the compiled 
C executable that runs perldl)? It's supposed to work.

pdl2 won't work "out of the box", since it got removed due to its very heavy 
dependencies. To run that now, you'll need to do cpanm PDL::Perldl2 (and then 
wait for Moose et al to get installed).

Best regards,
Ed

________________________________
From: Jörg Sommrey <j...@sommrey.de>
Sent: 22 January 2025 14:30
To: Luis Mochan <moc...@icf.unam.mx>
Cc: Ed . <ej...@hotmail.com>; perldl <pdl-devel@lists.sourceforge.net>; perldl 
<pdl-gene...@lists.sourceforge.net>
Subject: Re: [Pdl-devel] pdl scripts

Hi Luis,

you might try 'pdl2' instead of 'pdl'. The latter doesn't work for me
neither after upgrading PDL lately.
Just a guess.

-jo

On Wed 22 Jan 2025 04:46:09 AM CET, Luis Mochan <moc...@icf.unam.mx> wrote:

> Hi Ed,
>
> Maybe I didn't explain the issue, maybe I don't quite understand
> it. And maybe I didn't quite understand your answer:
>
> 1. I made a new account in my laptop
> 2. I installed perlbrew
> 3. I installed perl-5.40.1
> 4. In installed cpanm
> 5. I installed PDL with cpanm
> 6. I ran pdl
> 7. I obtained the answer:
>
>      perlDL shell v1.357
>       PDL comes with ABSOLUTELY NO WARRANTY. For details, see the file
>       'COPYING' in the PDL distribution. This is free software and you
>       are welcome to redistribute it under certain conditions, see
>       the same file for details.
>      ReadLines, NiceSlice, MultiLines  enabled
>      Reading PDL/default.perldlrc...
> *    WARNING: Error loading PDL: 'Can't locate Term/ReadKey.pm in
> @INC (you may need to install the Term::ReadKey module) (@INC
> entries checked:
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux
>  /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1 
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/5.40.1/x86_64-linux 
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/5.40.1) at 
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/Doc/Perldl.pm
>  line
> 52.
>      BEGIN failed--compilation aborted at
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/Doc/Perldl.pm
>  line
> 52.
>      Compilation failed in require at
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/default.perldlrc
>  line
> 37.
>      BEGIN failed--compilation aborted at
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/default.perldlrc
>  line
> 37.
>      Compilation failed in require at (eval 13) line 1.
>      ' - trying blib.
>      WARNING: PDL startup not found only plain perl available
>
>      Note: AutoLoader not enabled ('use PDL::AutoLoader' recommended)
> **   perl>
>
> The line marked with an * above says: 'WARNING: Error loading PDL:
> 'Can't locate Term/ReadKey.pm in @INC (you may need to install the
> Term::ReadKey module)...'
>
> So it is not that I (or my students) care about Term::ReadKey, it is
> that the advice we got is that we'd better install it.
>
> Also, the line marked with ** shows we obtained the prompt 'perl>'
> instead of the expected prompt 'pdl>'.
>
> In my previous installations, I hadn't had this problem, as I
> installed manually many required and optional pre-requisites,
> including Term::ReadLine::Gnu, which I guess is the readline you
> mention in your answer. However, installing Term::Readline::Gnu didn't
> help with the problem above. I obtained again:
>
>     $ pdl
>     perlDL shell v1.357
>      PDL comes with ABSOLUTELY NO WARRANTY. For details, see the file
>      'COPYING' in the PDL distribution. This is free software and you
>      are welcome to redistribute it under certain conditions, see
>      the same file for details.
>     ReadLines, NiceSlice, MultiLines  enabled
>     Reading PDL/default.perldlrc...
>     WARNING: Error loading PDL: 'Can't locate Term/ReadKey.pm in
> @INC (you may need to install the Term::ReadKey module) (@INC
> entries checked:
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux
>  /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1 
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/5.40.1/x86_64-linux 
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/5.40.1) at 
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/Doc/Perldl.pm
>  line
> 52.
>     BEGIN failed--compilation aborted at
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/Doc/Perldl.pm
>  line
> 52.
>     Compilation failed in require at
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/default.perldlrc
>  line
> 37.
>     BEGIN failed--compilation aborted at
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/default.perldlrc
>  line
> 37.
>     Compilation failed in require at (eval 11) line 1.
>     ' - trying blib.
>     WARNING: PDL startup not found only plain perl available
>
>     Note: AutoLoader not enabled ('use PDL::AutoLoader' recommended)
>
>     perl>
>
> But after installing ReadKey things started behaving as usual:
>
>     $ cpanm Term::ReadKey
>     --> Working on Term::ReadKey
>     Fetching
> http://www.cpan.org/authors/id/J/JS/JSTOWE/TermReadKey-2.38.tar.gz
> ... OK
>     Configuring TermReadKey-2.38 ... OK
>     Building and testing TermReadKey-2.38 ... OK
>     Successfully installed TermReadKey-2.38
>     1 distribution installed
>     $ pdl
>     perlDL shell v1.357
>      PDL comes with ABSOLUTELY NO WARRANTY. For details, see the file
>      'COPYING' in the PDL distribution. This is free software and you
>      are welcome to redistribute it under certain conditions, see
>      the same file for details.
>     ReadLines, NiceSlice, MultiLines  enabled
>     Reading PDL/default.perldlrc...
>     Found docs database
> /home/mochan2/perl5/perlbrew/perls/perl-5.40.1/lib/site_perl/5.40.1/x86_64-linux/PDL/pdldoc.db
>     Type 'help' for online help
>     Type 'demo' for online demos
>     Loaded PDL v2.098 (supports bad values)
>
>     Note: AutoLoader not enabled ('use PDL::AutoLoader' recommended)
>
>     pdl>
>
> So, what is the user expected to do? The installation of PDL was declared
> succesful, a program ('pdl') distributed with PDL was installed, the
> program didn't run smoothly and sent error messages asking the user to
> install another package: Term::ReadKey. How would you interpret this
> situation as a new user? Wouldn't you be confused? Wouldn't you
> conclude there is something wrong?
>
> I don't know what is the correct solution. I suggested adding
> Term::ReadKey to the required packages, so it would be installed
> automatically. Maybe that is not the correct solution, but then, I
> don't know, what would be the correct solution?
>
> Best regards,
> Luis
>
>
>
>
> On Tue, Jan 21, 2025 at 10:40:32PM +0000, Ed . wrote:
>> Hi Luis,
>>
>> PDL isn't just an interactive environment. "Required" would be
>> wrong. I use the interactive part very heavily (which isn't very
>> surprising), and wouldn't want to use it without readline (which I
>> have faced when debugging in a qemu environment on a weird
>> architecture). I am not going to make any of the Term::* be
>> "required" for PDL. I hope you understand.
>>
>> If it helps, the REPL script was installed, but not all of the
>> components. It does sound like you're asking me to make a separate
>> PDL::REPL repo where that stuff would live, but I don't want to do
>> that.
>>
>> Best regards,
>> Ed
>>
>> ________________________________
>> From: Luis Mochan <moc...@icf.unam.mx>
>> Sent: 21 January 2025 20:07
>> To: Ed . <ej...@hotmail.com>
>> Cc: perldl <pdl-gene...@lists.sourceforge.net>; perldl
>> <pdl-devel@lists.sourceforge.net>
>> Subject: Re: [Pdl-devel] pdl scripts
>>
>> Hi Ed,
>>
>> On Tue, Jan 21, 2025 at 05:13:09PM +0000, Ed . wrote:
>> > Hi Luis,
>> >
>> > That's a really good question!
>> >
>> > PDL's "requirements" (when you say e.g. cpanm PDL) are hard
>> requirements for PDL to run: largely File::Map and File::Which.
>> CPAN has a mechanism to "recommend" other modules, including
>> Term::ReadKey. It has done so for a long time. cpanm can be told to
>> install recommended modules.
>>
>> The doubt I have now is, should Term::ReadKey be recommended or should
>> it be required? The problem is that the repl's were installed, but
>> they didn't work without it.
>>
>> > The demos will be sparse...
>>
>> Ok, thanks. I'll pass that info to the students.
>>
>> Regards,
>> Luis
>>
>> --
>>
>>                                                                   o
>> W. Luis Mochán,                      | tel:(52)(777)329-1734     /<(*)
>> Instituto de Ciencias Físicas, UNAM  | fax:(52)(777)317-5388     `>/   /\
>> Av. Universidad s/n CP 62210         |                           (*)/\/  \
>> Cuernavaca, Morelos, México          | moc...@fis.unam.mx   /\_/\__/
>> GPG: 791EB9EB, C949 3F81 6D9B 1191 9A16  C2DF 5F0A C52B 791E B9EB


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