I broke my system with cpan

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

After using /usr/bin/cpan to update many modules, I've gotten versions confused:

$ perldoc perldoc
Encode object version 2.42_01 does not match bootstrap parameter 2.51 
+at /usr/lib/perl/5.14/DynaLoader.pm line 207.
Compilation failed in require at /usr/share/perl/5.14/Pod/Man.pm line 
+34.
BEGIN failed--compilation aborted at /usr/share/perl/5.14/Pod/Man.pm l
+ine 34.
Compilation failed in require at /usr/bin/pod2man line 19.
BEGIN failed--compilation aborted at /usr/bin/pod2man line 19.
Got a 0-length file from /usr/share/perl/5.14/pod/perldoc.pod via Pod:
+:Perldoc::ToMan!?
[download]

Where should I start looking?

Comment on I broke my system with cpan Download Code

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Re: I broke my system with cpan by locked_user sundialsvc4 (Abbot) on Jul 06, 2013 at 18:57 UTC
Please tell us more about what you did. How many Perls are on your system, where are they located and what is the version of each? How many CPAN libraries are on the system, where are they, and which one did you intend to update? What is the output of `o conf`? Were you attempting to update the package-supplied Perl imp. of a Linux “distro?” etc. ...
Re: I broke my system with cpan by Khen1950fx (Canon) on Jul 06, 2013 at 21:53 UTC
Try debugging with this: `#!/usr/bin/perl BEGIN { sub DEBUG { use strict; use warnings; $ENV{'PERLDOCDEBUG'} = 1; } eval { &DEBUG; if ($@) { die "WHAT? Couldn't eval..."; } }; } use strict; use warnings; use Pod::Perldoc; Pod::Perldoc->run();` [download] Note: run as `perl thisscript.pl perldoc` [download]	[reply] [d/l] [select]
Re^2: I broke my system with cpan (don't debug definitive error messages) by Anonymous Monk on Jul 06, 2013 at 23:04 UTC
Try debugging with this: There is no point; don't debug definitive error messages Encode object version 2.42_01 does not match bootstrap parameter 2.51 object version does not match bootstrap parameter -> Re: More on "IO object version does not match bootstrap parameter" error ?node_id=3989;BIT=object%20version%20does%20not%20match%20bootstrap%20parameter;re=N -> Re: Attempt to reload IO/Socket.pm aborted, Re: Does not match bootstrap parameter - MIME::Base64, Re: issue in DBD::Sybase use, Re: trouble installing Crypt::SSLeay, Basically, reinstall whatever module you're installing and make sure the .so and .pm files get overwritten Also, that program is one awfully Khen1950fx way to avoid `PERLDOCDEBUG=1 perldoc strict` [download] or `perl -e ' @ENV{PERLDOCDEBUG}=1; system q{perldoc strict}; '` [download]	[reply] [d/l] [select]
Re: I broke my system with cpan by Anonymous Monk on Dec 11, 2013 at 19:29 UTC
Anonymous Monk back again. I found that many of the packages (rather, their directories and files) that I installed via `sudo /usr/bin/cpan` were inaccessible to non-root users! Directories '`drwxr-x---`', some files '`-rwxr-----`'. Carefule use of `sudo chmod` fixed the problem.	[reply] [d/l] [select]