http://www.perlmonks.org?node_id=1079238

pno has asked for the wisdom of the Perl Monks concerning the following question:

Hello Dear Monks,

I'm trying to install Net::Daemon. It requires JSON 2.5 As you can see below JSON 2.90 is installed (should be compatible with 2.5). Did you encounter this issue and solved it somehow? I'm using ActiveState perl 5.18.2

cpan> install Net::Daemon
Running install for module 'Net::Daemon'
Running make for M/MN/MNOONING/Net-Daemon-0.48.tar.gz
Checksum for C:\Software\Perl5.18\cpan\sources\authors\id\M\MN\MNOONIN
+G\Net-Daemon-0.48.tar.gz ok
Net-Daemon-0.48/
Net-Daemon-0.48/ChangeLog
Net-Daemon-0.48/lib/
Net-Daemon-0.48/lib/Net/
Net-Daemon-0.48/lib/Net/Daemon/
Net-Daemon-0.48/lib/Net/Daemon/Log.pm
Net-Daemon-0.48/lib/Net/Daemon/Test.pm
Net-Daemon-0.48/lib/Net/Daemon.pm
Net-Daemon-0.48/Makefile.PL
Net-Daemon-0.48/MANIFEST
Net-Daemon-0.48/MANIFEST.SKIP
Net-Daemon-0.48/META.yml
Net-Daemon-0.48/README
Net-Daemon-0.48/regexp-threads
Net-Daemon-0.48/t/
Net-Daemon-0.48/t/base.t
Net-Daemon-0.48/t/config.t
Net-Daemon-0.48/t/fork.t
Net-Daemon-0.48/t/forkm.t
Net-Daemon-0.48/t/ithread.t
Net-Daemon-0.48/t/ithreadm.t
Net-Daemon-0.48/t/loop-child.t
Net-Daemon-0.48/t/loop.t
Net-Daemon-0.48/t/server
Net-Daemon-0.48/t/single.t
Net-Daemon-0.48/t/thread.t
Net-Daemon-0.48/t/threadm.t
Net-Daemon-0.48/t/unix.t

  CPAN.pm: Building M/MN/MNOONING/Net-Daemon-0.48.tar.gz

Checking if your kit is complete...
Looks good
JSON 2.5 is required for $ENV{PERL_JSON_BACKEND} = 'JSON::XS'
 at c:/Software/Perl5.18/lib/CPAN/Meta/Converter.pm line 23.
 at c:/Software/Perl5.18/lib/ExtUtils/MM_Any.pm line 884.
JSON 2.5 is required for $ENV{PERL_JSON_BACKEND} = 'JSON::XS'
 at c:/Software/Perl5.18/lib/CPAN/Meta/Converter.pm line 23.
Warning: No success on command[c:\Software\Perl5.18\bin\perl.exe Makef
+ile.PL INSTALLDIRS=site]
  MNOONING/Net-Daemon-0.48.tar.gz
  c:\Software\Perl5.18\bin\perl.exe Makefile.PL INSTALLDIRS=site -- NO
+T OK
Running make test
  Make had some problems, won't test
Running make install
  Make had some problems, won't install
Failed during this command:
 MNOONING/Net-Daemon-0.48.tar.gz              : writemakefile NO 'c:\S
+oftware\Perl5.18\bin\perl.exe Makefile.PL INSTALLDIRS=site' returned 
+status 512

cpan> install JSON
JSON is up to date (2.90).

cpan>

[download]

Replies are listed 'Best First'.
Re: JSON 2.5 2.90
by ikegami (Patriarch) on Mar 21, 2014 at 14:00 UTC

    What do you get from the following: 

    perl -e"use JSON; JSON->VERSION(2.5);"

    [download]

    (A failure in that code is what leads to the error you get.)

[reply]
[d/l]
      perl.exe -e "use JSON; JSON->VERSION(2.5);"
Can't locate JSON/XS.pm in @INC (you may need to install the JSON::XS 
+module) (@INC contains: c:/Software/Perl5.18/site/lib c:/Software/Per
+l5.18/lib .) at
(eval 4) line 2.
BEGIN failed--compilation aborted at (eval 4) line 2.
 at -e line 1.
Compilation failed in require at -e line 1.
BEGIN failed--compilation aborted at -e line 1.

      [download]
[reply]
[d/l]
        You are explicitly requesting that JSON uses JSON::XS instead of JSON::PP (by setting env var PERL_JSON_BACKEND to JSON::XS), but you don't have JSON::XS installed.
[reply]
[d/l]
[select]
Re: JSON 2.5 2.90
by Khen1950fx (Canon) on Mar 21, 2014 at 15:04 UTC
    You could change the environmental variable. What happens when you try this? 
    PERL_JSON_BACKEND='JSON::XS,JSON::PP' cpan Net::Daemon

    [download]
[reply]
[d/l]
      c:\Software\Perl5.18\bin\cpan Net::Daemon
CPAN: Term::ANSIColor loaded ok (v4.02)
CPAN: Storable loaded ok (v2.45)
Reading 'C:\Software\Perl5.18\cpan\Metadata'
  Database was generated on Thu, 20 Mar 2014 10:41:02 GMT
Reading 'C:\Software\Perl5.18\cpan\sources\authors\01mailrc.txt.gz'
CPAN: Compress::Zlib loaded ok (v2.063)
......................................................................
+......DONE
CPAN: LWP::UserAgent loaded ok (v6.05)
CPAN: Time::HiRes loaded ok (v1.9726)
Fetching with LWP:
http://ppm.activestate.com/CPAN/modules/02packages.details.txt.gz
CPAN: YAML::XS loaded ok (v0.41)
Reading 'C:\Software\Perl5.18\cpan\sources\modules\02packages.details.
+txt.gz'
  Database was generated on Sun, 23 Mar 2014 11:06:14 GMT
......................................................................
+......DONE
Fetching with LWP:
http://ppm.activestate.com/CPAN/modules/03modlist.data.gz
Reading 'C:\Software\Perl5.18\cpan\sources\modules\03modlist.data.gz'
......................................................................
+......DONE
Writing C:\Software\Perl5.18\cpan\Metadata
Running install for module 'Net::Daemon'
Running make for M/MN/MNOONING/Net-Daemon-0.48.tar.gz
CPAN: Digest::SHA loaded ok (v5.85)
Checksum for C:\Software\Perl5.18\cpan\sources\authors\id\M\MN\MNOONIN
+G\Net-Daemon-0.48.tar.gz ok
CPAN: Archive::Tar loaded ok (v1.96)
Net-Daemon-0.48/
Net-Daemon-0.48/ChangeLog
Net-Daemon-0.48/lib/
Net-Daemon-0.48/lib/Net/
Net-Daemon-0.48/lib/Net/Daemon/
Net-Daemon-0.48/lib/Net/Daemon/Log.pm
Net-Daemon-0.48/lib/Net/Daemon/Test.pm
Net-Daemon-0.48/lib/Net/Daemon.pm
Net-Daemon-0.48/Makefile.PL
Net-Daemon-0.48/MANIFEST
Net-Daemon-0.48/MANIFEST.SKIP
Net-Daemon-0.48/META.yml
Net-Daemon-0.48/README
Net-Daemon-0.48/regexp-threads
Net-Daemon-0.48/t/
Net-Daemon-0.48/t/base.t
Net-Daemon-0.48/t/config.t
Net-Daemon-0.48/t/fork.t
Net-Daemon-0.48/t/forkm.t
Net-Daemon-0.48/t/ithread.t
Net-Daemon-0.48/t/ithreadm.t
Net-Daemon-0.48/t/loop-child.t
Net-Daemon-0.48/t/loop.t
Net-Daemon-0.48/t/server
Net-Daemon-0.48/t/single.t
Net-Daemon-0.48/t/thread.t
Net-Daemon-0.48/t/threadm.t
Net-Daemon-0.48/t/unix.t
CPAN: File::Temp loaded ok (v0.2304)
CPAN: Parse::CPAN::Meta loaded ok (v1.4409)
CPAN: CPAN::Meta loaded ok (v2.132830)
CPAN: Module::CoreList loaded ok (v3.03)

  CPAN.pm: Building M/MN/MNOONING/Net-Daemon-0.48.tar.gz

Checking if your kit is complete...
Looks good
Could not load PERL_YAML_BACKEND 'YAML'
 at C:/Software/Perl5.18/lib/CPAN/Meta.pm line 320.
Warning: No success on command[C:\Software\Perl5.18\bin\perl.exe Makef
+ile.PL INSTALLDIRS=site]
  MNOONING/Net-Daemon-0.48.tar.gz
  C:\Software\Perl5.18\bin\perl.exe Makefile.PL INSTALLDIRS=site -- NO
+T OK
Running make test
  Make had some problems, won't test
Running make install
  Make had some problems, won't install
Could not read metadata file. Falling back to other methods to determi
+ne prerequisites

      [download]
[reply]
[d/l]
        Could not load PERL_YAML_BACKEND 'YAML'
        There are two ways around this, one is to simply unset that environment variable (PERL_YAML_BACKEND) and the other is to install YAML.
[reply]
[d/l]
Re: JSON 2.5 2.90
by Bloodnok (Vicar) on Mar 21, 2014 at 11:44 UTC
    It's always a good idea to ensure that the title provides a fairly accurate precis of the knowledge &/or wisdom that you seek.

    Have you tried the AS Net::Daemon PPM ?

    A user level that continues to overstate my experience :-))
[reply]
Re: JSON 2.5 2.90
by stefbv (Curate) on Mar 21, 2014 at 11:55 UTC

    Try "install JSON::XS".

    Update: Fixed typo, thank you hazylife.

[reply]
      cpan> install JSON::XS
Reading 'C:\Software\Perl5.18\cpan\Metadata'
  Database was generated on Sun, 23 Mar 2014 11:06:14 GMT
Running install for module 'JSON::XS'
Running make for M/ML/MLEHMANN/JSON-XS-3.01.tar.gz
Checksum for C:\Software\Perl5.18\cpan\sources\authors\id\M\ML\MLEHMAN
+N\JSON-XS-3.01.tar.gz ok
Scanning cache C:\Software\Perl5.18/cpan/build for sizes
......................................................................
+......DONE
JSON-XS-3.01/
JSON-XS-3.01/typemap
JSON-XS-3.01/XS.pm
JSON-XS-3.01/Makefile.PL
JSON-XS-3.01/META.yml
JSON-XS-3.01/Changes
JSON-XS-3.01/META.json
JSON-XS-3.01/COPYING
JSON-XS-3.01/XS.xs
JSON-XS-3.01/README
JSON-XS-3.01/bin/
JSON-XS-3.01/bin/json_xs
JSON-XS-3.01/eg/
JSON-XS-3.01/eg/bench
JSON-XS-3.01/t/
JSON-XS-3.01/t/18_json_checker.t
JSON-XS-3.01/t/20_faihu.t
JSON-XS-3.01/t/03_types.t
JSON-XS-3.01/t/09_pc_extra_number.t
JSON-XS-3.01/t/21_evans.t
JSON-XS-3.01/t/19_incr.t
JSON-XS-3.01/t/52_object.t
JSON-XS-3.01/t/05_dwiw_decode.t
JSON-XS-3.01/t/00_load.t
JSON-XS-3.01/t/07_pc_esc.t
JSON-XS-3.01/t/15_prefix.t
JSON-XS-3.01/t/06_pc_pretty.t
JSON-XS-3.01/t/22_comment_at_eof.t
JSON-XS-3.01/t/02_error.t
JSON-XS-3.01/t/01_utf8.t
JSON-XS-3.01/t/10_pc_keysort.t
JSON-XS-3.01/t/17_relaxed.t
JSON-XS-3.01/t/11_pc_expo.t
JSON-XS-3.01/t/99_binary.t
JSON-XS-3.01/t/12_blessed.t
JSON-XS-3.01/t/16_tied.t
JSON-XS-3.01/t/08_pc_base.t
JSON-XS-3.01/t/14_latin1.t
JSON-XS-3.01/t/04_dwiw_encode.t
JSON-XS-3.01/t/13_limit.t
JSON-XS-3.01/XS/
JSON-XS-3.01/XS/Boolean.pm
JSON-XS-3.01/MANIFEST

  CPAN.pm: Building M/ML/MLEHMANN/JSON-XS-3.01.tar.gz

Checking if your kit is complete...
Looks good
Warning: prerequisite Types::Serialiser 0 not found.
Warning: prerequisite common::sense 0 not found.
JSON 2.5 is required for $ENV{PERL_JSON_BACKEND} = 'JSON::XS'
 at C:/Software/Perl5.18/lib/CPAN/Meta/Converter.pm line 23.
 at C:/Software/Perl5.18/lib/ExtUtils/MM_Any.pm line 884.
JSON 2.5 is required for $ENV{PERL_JSON_BACKEND} = 'JSON::XS'
 at C:/Software/Perl5.18/lib/CPAN/Meta/Converter.pm line 23.
Warning: No success on command[C:\Software\Perl5.18\bin\perl.exe Makef
+ile.PL INSTALLDIRS=site]
  MLEHMANN/JSON-XS-3.01.tar.gz
  C:\Software\Perl5.18\bin\perl.exe Makefile.PL INSTALLDIRS=site -- NO
+T OK
Running make test
  Make had some problems, won't test
Running make install
  Make had some problems, won't install
Could not read metadata file. Falling back to other methods to determi
+ne prerequisites
Failed during this command:
 MLEHMANN/JSON-XS-3.01.tar.gz                 : writemakefile NO 'C:\S
+oftware\Perl5.18\bin\perl.exe Makefile.PL INSTALLDIRS=site' returned 
+status 512

cpan>

      [download]
[reply]
[d/l]

        JSON::XS requires JSON, so cpan is trying to load JSON to make sure you have it. You have configured JSON to use JSON::XS which isn't installed, so JSON doesn't load.

        The solution is to stop telling JSON to use JSON::XS until you've installed JSON::XS. The following installed JSON::XS, after which you'll be fine: 

        PERL_JSON_BACKEND= cpan JSON::XS

        [download]
[reply]
[d/l]
[select]
Re: JSON 2.5 2.90
by ww (Archbishop) on Mar 21, 2014 at 11:45 UTC
    "should be compatible with 2.5)"

    Is that assertion based on some knowledge or merely a supposition?


    Questions containing the words "doesn't work" (or their moral equivalent) will usually get a downvote from me unless accompanied by:
    1. code
    2. verbatim error and/or warning messages
    3. a coherent explanation of what "doesn't work actually means.
[reply]

      My assupmption.

[reply]
        ... and do you know why "assumptions" are dangerous?
              'Because "to assume" makes an ass of you and me.'

        Questions containing the words "doesn't work" (or their moral equivalent) will usually get a downvote from me unless accompanied by:
        1. code
        2. verbatim error and/or warning messages
        3. a coherent explanation of what "doesn't work actually means.
[reply]

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