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Re^2: why isn't cpan like npm?

by CodeDmitry (Initiate)
on Apr 20, 2018 at 15:31 UTC ( [id://1213259]=note: print w/replies, xml ) Need Help??


in reply to Re: why isn't cpan like npm?
in thread why isn't cpan like npm?

1. Here's a direct paste of me running cpan install Parse::Lex, :\ not a very great experience

<Reveal this spoiler or all in this thread>

quote: As someone who dabbles in JS/JQuery very, very infrequently, can you elaborate on what NPM is for so that those in this neighbourhood who may be ignorant (like me) can get a better picture?

NPM is a package manager that comes with NodeJS installations. I mention it because I want to understand why Perl, a language with much older and experienced scripting community has so much harder to use package manager than NodeJS.

quote: Perl data structures match more closely to JSON structures than any other language.

I have to sidetrack a bit here, Perl modules are largely package based(a weird version of hash tables that are less intuitive to use yet somehow benchmark faster than hash tables). NodeJS modules are just hash tables with a bunch of memory leaks in them.

Replies are listed 'Best First'.
Re^3: why isn't cpan like npm?
by Your Mother (Archbishop) on Apr 20, 2018 at 15:43 UTC

    You got several replies that said you should be using cpanm instead of cpan. I reiterate it. App::cpanminus is easier, and probably better, than the regular cpan tool in every way I can think. The docs show how it can be bootstrapped to install without using cpan.

[reply]
Re^3: why isn't cpan like npm?
by marto (Cardinal) on Apr 20, 2018 at 15:41 UTC

    Here I run cpan Parse::Lex on an Intel atom based netbook from >10 years ago, with 1GB RAM (559MB currently in use), note that I've run CPAN before so don't have to tell configure it:

    sudo cpan Parse::Lex
[sudo] password for marto: 
CPAN: Storable loaded ok (v2.53_01)
Reading '/home/marto/.local/share/.cpan/Metadata'
  Database was generated on Fri, 16 Feb 2018 10:41:02 GMT
Reading '/home/marto/.local/share/.cpan/sources/authors/01mailrc.txt.g
+z'
CPAN: Compress::Zlib loaded ok (v2.068)
......................................................................
+......DONE
Reading '/home/marto/.local/share/.cpan/sources/modules/02packages.det
+ails.txt.gz'
  Database was generated on Fri, 20 Apr 2018 11:17:02 GMT
CPAN: HTTP::Date loaded ok (v6.02)
.............
  New CPAN.pm version (v2.16) available.
  [Currently running version is v2.11]
  You might want to try
    install CPAN
    reload cpan
  to both upgrade CPAN.pm and run the new version without leaving
  the current session.


...............................................................DONE
CPAN: LWP::UserAgent loaded ok (v6.15)
Fetching with LWP:
http://www.cpan.org/modules/03modlist.data.gz
CPAN: YAML loaded ok (v1.15)
Reading '/home/marto/.local/share/.cpan/sources/modules/03modlist.data
+.gz'
DONE
Writing /home/marto/.local/share/.cpan/Metadata
Running install for module 'Parse::Lex'
Fetching with LWP:
http://www.cpan.org/authors/id/P/PS/PSCUST/ParseLex-2.21.tar.gz
CPAN: Digest::SHA loaded ok (v5.95)
Fetching with LWP:
http://www.cpan.org/authors/id/P/PS/PSCUST/CHECKSUMS
Checksum for /home/marto/.local/share/.cpan/sources/authors/id/P/PS/PS
+CUST/ParseLex-2.21.tar.gz ok
CPAN: File::Temp loaded ok (v0.2304)
CPAN: CPAN::Meta::Requirements loaded ok (v2.140)
CPAN: Parse::CPAN::Meta loaded ok (v1.4414)
CPAN: CPAN::Meta loaded ok (v2.150005)
CPAN: Module::CoreList loaded ok (v5.20151213)
Configuring P/PS/PSCUST/ParseLex-2.21.tar.gz with Makefile.PL
Checking if your kit is complete...
Looks good
Warning: prerequisite Parse::Template 3.04 not found.
Generating a Unix-style Makefile
Writing Makefile for Parse::Lex
Writing MYMETA.yml and MYMETA.json
  PSCUST/ParseLex-2.21.tar.gz
  /usr/bin/perl Makefile.PL INSTALLDIRS=site -- OK
Running make for P/PS/PSCUST/ParseLex-2.21.tar.gz
---- Unsatisfied dependencies detected during ----
----        PSCUST/ParseLex-2.21.tar.gz       ----
    Parse::Template [requires]
Running install for module 'Parse::Template'
Fetching with LWP:
http://www.cpan.org/authors/id/P/PS/PSCUST/ParseTemplate-3.08.tar.gz
Checksum for /home/marto/.local/share/.cpan/sources/authors/id/P/PS/PS
+CUST/ParseTemplate-3.08.tar.gz ok
Configuring P/PS/PSCUST/ParseTemplate-3.08.tar.gz with Makefile.PL
Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Parse::Template
Writing MYMETA.yml and MYMETA.json
  PSCUST/ParseTemplate-3.08.tar.gz
  /usr/bin/perl Makefile.PL INSTALLDIRS=site -- OK
Running make for P/PS/PSCUST/ParseTemplate-3.08.tar.gz
cp lib/Parse/Template.pm blib/lib/Parse/Template.pm
Manifying 1 pod document
  PSCUST/ParseTemplate-3.08.tar.gz
  /usr/bin/make -- OK
Running make test
PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::H
+arness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/l
+ib', 'blib/arch')" t/*.t
t/debug.t ..... ok   
t/rt_58128.t .. ok    
t/test1.t ..... ok   
t/test2.t ..... ok   
t/test3.t ..... ok   
t/test4.t ..... ok   
t/test5.t ..... ok   
t/test6.t ..... ok   
All tests successful.
Files=8, Tests=32,  2 wallclock secs ( 0.20 usr  0.02 sys +  1.22 cusr
+  0.12 csys =  1.56 CPU)
Result: PASS
  PSCUST/ParseTemplate-3.08.tar.gz
  /usr/bin/make test -- OK
Running make install
Manifying 1 pod document
Installing /usr/local/share/perl/5.22.1/Parse/Template.pm
Installing /usr/local/man/man3/Parse::Template.3pm
Appending installation info to /usr/lib/i386-linux-gnu/perl/5.22/perll
+ocal.pod
  PSCUST/ParseTemplate-3.08.tar.gz
  /usr/bin/make install  -- OK
  PSCUST/ParseLex-2.21.tar.gz
  Has already been unwrapped into directory /home/marto/.local/share/.
+cpan/build/ParseLex-2.21-SyvmkU
  PSCUST/ParseLex-2.21.tar.gz
  Has already been prepared
Running make for P/PS/PSCUST/ParseLex-2.21.tar.gz
cp lib/Parse/ALex.pm blib/lib/Parse/ALex.pm
cp lib/Parse/LexEvent.pm blib/lib/Parse/LexEvent.pm
cp lib/Parse/Token-t.pm blib/lib/Parse/Token-t.pm
cp lib/Parse/Token.pm blib/lib/Parse/Token.pm
cp lib/Parse/CLex.pm blib/lib/Parse/CLex.pm
cp lib/Parse/Lex.pm blib/lib/Parse/Lex.pm
cp lib/Parse/Trace.pm blib/lib/Parse/Trace.pm
cp lib/Parse/YYLex.pm blib/lib/Parse/YYLex.pm
Manifying 7 pod documents
  PSCUST/ParseLex-2.21.tar.gz
  /usr/bin/make -- OK
Running make test
PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::H
+arness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/l
+ib', 'blib/arch')" t/*.t
t/debug.t ..... ok   
t/rt_58128.t .. ok    
t/test1.t ..... ok   
t/test2.t ..... ok   
t/test3.t ..... ok   
t/test4.t ..... ok   
t/test5.t ..... ok   
t/test6.t ..... ok   
t/test7.t ..... ok   
t/test8.t ..... ok   
All tests successful.
Files=10, Tests=29,  3 wallclock secs ( 0.21 usr  0.03 sys +  2.76 cus
+r  0.19 csys =  3.19 CPU)
Result: PASS
  PSCUST/ParseLex-2.21.tar.gz
  /usr/bin/make test -- OK
Running make install
Manifying 7 pod documents
Installing /usr/local/share/perl/5.22.1/Parse/LexEvent.pm
Installing /usr/local/share/perl/5.22.1/Parse/Token-t.pm
Installing /usr/local/share/perl/5.22.1/Parse/Token.pm
Installing /usr/local/share/perl/5.22.1/Parse/Lex.pm
Installing /usr/local/share/perl/5.22.1/Parse/CLex.pm
Installing /usr/local/share/perl/5.22.1/Parse/YYLex.pm
Installing /usr/local/share/perl/5.22.1/Parse/Trace.pm
Installing /usr/local/share/perl/5.22.1/Parse/ALex.pm
Installing /usr/local/man/man3/Parse::CLex.3pm
Installing /usr/local/man/man3/Parse::LexEvent.3pm
Installing /usr/local/man/man3/Parse::Token.3pm
Installing /usr/local/man/man3/Parse::Trace.3pm
Installing /usr/local/man/man3/Parse::ALex.3pm
Installing /usr/local/man/man3/Parse::YYLex.3pm
Installing /usr/local/man/man3/Parse::Lex.3pm
Appending installation info to /usr/lib/i386-linux-gnu/perl/5.22/perll
+ocal.pod
  PSCUST/ParseLex-2.21.tar.gz
  /usr/bin/make install  -- OK

    [download]

    Are you sure you're not hitting a limit (for example) enforced on your user? Also perl 5.8 is ancient, and as explained earlier, cpanm is much better than cpan. Essentially it looks like you're hitting a system limit and are running a very old perl when the modern world is much better :)

[reply]
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Re^3: why isn't cpan like npm?
by Anonymous Monk on Apr 20, 2018 at 22:22 UTC
    /usr/lib/perl5/5.8/CPAN/Config.pm initialized.

    that answers the question: youre complaining about Perl from 13 years ago

[reply]

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