[gentoo-user] I don't understand Perl. What do I do after an update?

[gentoo-user] I don't understand Perl. What do I do after an update?

[Nikos Chantziaras]

Portage recently updated Perl from 5.10.1 to 5.12.1 (and later -r1). 
However, a crapload of files still remain in 
/usr/lib/perl5/{site_perl,vendor_perl}/5.10.1.  I found out the hard way 
after trying to emerge openoffice (and everyone knows how painful that 
one is):

checking for required Perl modules... Can't locate Archive/Zip.pm in 
@INC (@INC contains: 
/usr/lib64/perl5/site_perl/5.12.1/x86_64-linux-thread-multi 
/usr/lib64/perl5/site_perl/5.12.1 
/usr/lib64/perl5/vendor_perl/5.12.1/x86_64-linux-thread-multi 
/usr/lib64/perl5/vendor_perl/5.12.1 
/usr/lib64/perl5/5.12.1/x86_64-linux-thread-multi 
/usr/lib64/perl5/5.12.1 /usr/lib64/perl5/site_perl 
/usr/lib64/perl5/vendor_perl .) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.
configure: error: Failed to find some modules
make: *** [stamp/build] Error 1

What is the user required to do after updating Perl?  elogv doesn't tell 
me anything about upgrading.

Re: [gentoo-user] I don't understand Perl. What do I do after an update?

[Willie Wong]

On Wed, Jul 21, 2010 at 08:04:54PM +0300, Nikos Chantziaras wrote:
> Portage recently updated Perl from 5.10.1 to 5.12.1 (and later -r1). 
> However, a crapload of files still remain in 
> /usr/lib/perl5/{site_perl,vendor_perl}/5.10.1.  I found out the hard way 
> after trying to emerge openoffice (and everyone knows how painful that 
> one is):
> 
> What is the user required to do after updating Perl?  elogv doesn't tell 
> me anything about upgrading.

There's this neat little script called perl-cleaner

http://www.gentoo.org/proj/en/perl/perl-cleaner.xml

W

-- 
Willie W. Wong                                     wwong@math.princeton.edu
Data aequatione quotcunque fluentes quantitae involvente fluxiones invenire 
         et vice versa   ~~~  I. Newton

[gentoo-user] Re: I don't understand Perl. What do I do after an update?

[Nikos Chantziaras]

On 07/21/2010 08:34 PM, Willie Wong wrote:
> On Wed, Jul 21, 2010 at 08:04:54PM +0300, Nikos Chantziaras wrote:
>> Portage recently updated Perl from 5.10.1 to 5.12.1 (and later -r1).
>> However, a crapload of files still remain in
>> /usr/lib/perl5/{site_perl,vendor_perl}/5.10.1.  I found out the hard way
>> after trying to emerge openoffice (and everyone knows how painful that
>> one is):
>>
>> What is the user required to do after updating Perl?  elogv doesn't tell
>> me anything about upgrading.
>
> There's this neat little script called perl-cleaner
>
> http://www.gentoo.org/proj/en/perl/perl-cleaner.xml

Thanks.  How do I call the script?  I don't have any idea what perl 
modules or ph files are (or why I need them).  What do I need to do?

Re: [gentoo-user] Re: I don't understand Perl. What do I do after an update?

[Blackdream W]

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perl-cleaner --all

2010/7/22 Nikos Chantziaras <realnc@arcor.de>

> On 07/21/2010 08:34 PM, Willie Wong wrote:
>
>> On Wed, Jul 21, 2010 at 08:04:54PM +0300, Nikos Chantziaras wrote:
>>
>>> Portage recently updated Perl from 5.10.1 to 5.12.1 (and later -r1).
>>> However, a crapload of files still remain in
>>> /usr/lib/perl5/{site_perl,vendor_perl}/5.10.1.  I found out the hard way
>>> after trying to emerge openoffice (and everyone knows how painful that
>>> one is):
>>>
>>> What is the user required to do after updating Perl?  elogv doesn't tell
>>> me anything about upgrading.
>>>
>>
>> There's this neat little script called perl-cleaner
>>
>> http://www.gentoo.org/proj/en/perl/perl-cleaner.xml
>>
>
> Thanks.  How do I call the script?  I don't have any idea what perl modules
> or ph files are (or why I need them).  What do I need to do?
>
>
>

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Re: [gentoo-user] Re: I don't understand Perl. What do I do after an update?

[Alan McKinnon]

On Wednesday 21 July 2010 20:33:42 Nikos Chantziaras wrote:
> On 07/21/2010 08:34 PM, Willie Wong wrote:
> > On Wed, Jul 21, 2010 at 08:04:54PM +0300, Nikos Chantziaras wrote:
> >> Portage recently updated Perl from 5.10.1 to 5.12.1 (and later -r1).
> >> However, a crapload of files still remain in
> >> /usr/lib/perl5/{site_perl,vendor_perl}/5.10.1.  I found out the hard way
> >> after trying to emerge openoffice (and everyone knows how painful that
> >> one is):
> >> 
> >> What is the user required to do after updating Perl?  elogv doesn't tell
> >> me anything about upgrading.
> > 
> > There's this neat little script called perl-cleaner
> > 
> > http://www.gentoo.org/proj/en/perl/perl-cleaner.xml
> 
> Thanks.  How do I call the script?  I don't have any idea what perl
> modules or ph files are (or why I need them).  What do I need to do?

Short version:
You run 

perl-cleaner --modules

and it just does it.

Long version:
perl comes out the box as an interpreter and some base functionality. The 
community provides a brazillion useful modules for all sort of things. Like eg 
Date. Need to do some Date manipulation? No need to write the disgusting code 
yourself to work with Dates, someone else already did it. Just install a 
module.

The trouble is that modules are often written in perl itself and closely tied 
to the version of perl used. If you upgrade perl, you must also rebuild all 
the modules tied to it, they don't just migrate.

This is a painful process. It's enough to drive a sysadmin to drink or (god 
forbid), to Windows. Portage can't help as the ebuild doesn't know what you 
have installed. So you must run a script to go and dig out all this crap for 
you.

All I can say is, every day I get down on my knees and offer thanks that perl 
is not slotted.



-- 
alan dot mckinnon at gmail dot com

Re: [gentoo-user] I don't understand Perl. What do I do after an update?

[Neil Bothwick]

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On Wed, 21 Jul 2010 20:04:54 +0300, Nikos Chantziaras wrote:

> What is the user required to do after updating Perl?  elogv doesn't
> tell me anything about upgrading.

Really? I got this message when going from 5.10 to 5.12

WARN: setup
UPDATE THE PERL MODULES:
After updating dev-lang/perl you must reinstall
the installed perl modules.
Use: perl-cleaner --all


-- 
Neil Bothwick

WinErr 004: Erroneous error - Nothing is wrong

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Re: [gentoo-user] Re: I don't understand Perl. What do I do after an update?

[covici]

Alan McKinnon <alan.mckinnon@gmail.com> wrote:

> On Wednesday 21 July 2010 20:33:42 Nikos Chantziaras wrote:
> > On 07/21/2010 08:34 PM, Willie Wong wrote:
> > > On Wed, Jul 21, 2010 at 08:04:54PM +0300, Nikos Chantziaras wrote:
> > >> Portage recently updated Perl from 5.10.1 to 5.12.1 (and later -r1).
> > >> However, a crapload of files still remain in
> > >> /usr/lib/perl5/{site_perl,vendor_perl}/5.10.1.  I found out the hard way
> > >> after trying to emerge openoffice (and everyone knows how painful that
> > >> one is):
> > >> 
> > >> What is the user required to do after updating Perl?  elogv doesn't tell
> > >> me anything about upgrading.
> > > 
> > > There's this neat little script called perl-cleaner
> > > 
> > > http://www.gentoo.org/proj/en/perl/perl-cleaner.xml
> > 
> > Thanks.  How do I call the script?  I don't have any idea what perl
> > modules or ph files are (or why I need them).  What do I need to do?
> 
> Short version:
> You run 
> 
> perl-cleaner --modules
> 
> and it just does it.
> 
> Long version:
> perl comes out the box as an interpreter and some base functionality. The 
> community provides a brazillion useful modules for all sort of things. Like eg 
> Date. Need to do some Date manipulation? No need to write the disgusting code 
> yourself to work with Dates, someone else already did it. Just install a 
> module.
> 
> The trouble is that modules are often written in perl itself and closely tied 
> to the version of perl used. If you upgrade perl, you must also rebuild all 
> the modules tied to it, they don't just migrate.
> 
> This is a painful process. It's enough to drive a sysadmin to drink or (god 
> forbid), to Windows. Portage can't help as the ebuild doesn't know what you 
> have installed. So you must run a script to go and dig out all this crap for 
> you.
> 
> All I can say is, every day I get down on my knees and offer thanks that perl 
> is not slotted.
But portage should be sensible enough to either run this for you, or
stop emerging -- I had a lot of trouble during the last update where I
kept getting errors and I emerged a couple of them before I knew I had
to run perl-cleaner.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici@ccs.covici.com

Re: [gentoo-user] Re: I don't understand Perl. What do I do after an update?

[Alan McKinnon]

On Wednesday 21 July 2010 23:14:35 covici@ccs.covici.com wrote:
> > This is a painful process. It's enough to drive a sysadmin to drink or
> > (god  forbid), to Windows. Portage can't help as the ebuild doesn't know
> > what you have installed. So you must run a script to go and dig out all
> > this crap for you.
> >
> > 
> >
> > All I can say is, every day I get down on my knees and offer thanks that
> > perl  is not slotted.
> 
> But portage should be sensible enough to either run this for you, or
> stop emerging -- I had a lot of trouble during the last update where I
> kept getting errors and I emerged a couple of them before I knew I had
> to run perl-cleaner.

You haven't thought this through and haven't consider how portage knows what 
to do.

Portage doesn't do it because portage can't.
You want portage to do it != portage can do it.

Consider this:

[I] dev-lang/perl
     Installed versions:  5.12.1-r1(23:11:24 21/07/10)(berkdb gdbm -build -
debug -doc -ithreads)

[I] dev-perl/DateManip
     Installed versions:  5.56(19:39:11 17/07/10)(-test)


When I upgraded perl to 5.12.1-r1, DateManip was not upgraded. Why not? 
because it's version number did not change and that is the ONLY thing portage 
considers. DateManip depends on perl, not on =perl-whatever-I-used-to-have

So portage does not know of the link between these two things and cannot take 
them into account. Portage won't be expanded anytime soon either - you saw how 
long it took for perl-cleaner to run, must portage go through something like 
that with every emerge?

Similarly, one could say portage should detect rev-dep breakage. Surprise! It 
doesn't. revdep-rebuild does that (comparable to perl-cleaner) and you know 
how long that takes to run.

So you wasted some time with an upgrade. Well that's a shame. But we don't 
care much, especially if you don't read the elog messages. If you feel that 
portage should does this automagically, and have a plan to make it run REAL 
quick, and have proven, workable, debugged, solid, stable patches, then I'm 
sure Zac would be very happy indeed to hear from you.

In the meantime, read the elog messages.


-- 
alan dot mckinnon at gmail dot com

Re: [gentoo-user] Re: I don't understand Perl. What do I do after an update?

[Heorhii Valakhaniovich]

 On 07/21/2010 07:14 PM, Blackdream W wrote:
> perl-cleaner --all
It's better to do perl-cleaner -p --all before to watch what can happen.

Re: [gentoo-user] Re: I don't understand Perl. What do I do after an update?

[covici]

Alan McKinnon <alan.mckinnon@gmail.com> wrote:


> On Wednesday 21 July 2010 23:14:35 covici@ccs.covici.com wrote:
> > > This is a painful process. It's enough to drive a sysadmin to drink or
> > > (god  forbid), to Windows. Portage can't help as the ebuild doesn't know
> > > what you have installed. So you must run a script to go and dig out all
> > > this crap for you.
> > >
> > > 
> > >
> > > All I can say is, every day I get down on my knees and offer thanks that
> > > perl  is not slotted.
> > 
> > But portage should be sensible enough to either run this for you, or
> > stop emerging -- I had a lot of trouble during the last update where I
> > kept getting errors and I emerged a couple of them before I knew I had
> > to run perl-cleaner.
> 
> You haven't thought this through and haven't consider how portage knows what 
> to do.
> 
> Portage doesn't do it because portage can't.
> You want portage to do it != portage can do it.
> 
> Consider this:
> 
> [I] dev-lang/perl
>      Installed versions:  5.12.1-r1(23:11:24 21/07/10)(berkdb gdbm -build -
> debug -doc -ithreads)
> 
> [I] dev-perl/DateManip
>      Installed versions:  5.56(19:39:11 17/07/10)(-test)
> 
> 
> When I upgraded perl to 5.12.1-r1, DateManip was not upgraded. Why not? 
> because it's version number did not change and that is the ONLY thing portage 
> considers. DateManip depends on perl, not on =perl-whatever-I-used-to-have
> 
> So portage does not know of the link between these two things and cannot take 
> them into account. Portage won't be expanded anytime soon either - you saw how 
> long it took for perl-cleaner to run, must portage go through something like 
> that with every emerge?
> 
> Similarly, one could say portage should detect rev-dep breakage. Surprise! It 
> doesn't. revdep-rebuild does that (comparable to perl-cleaner) and you know 
> how long that takes to run.
> 
> So you wasted some time with an upgrade. Well that's a shame. But we don't 
> care much, especially if you don't read the elog messages. If you feel that 
> portage should does this automagically, and have a plan to make it run REAL 
> quick, and have proven, workable, debugged, solid, stable patches, then I'm 
> sure Zac would be very happy indeed to hear from you.
> 
> In the meantime, read the elog messages.
But I could not read the elog messages, the emerge was going on, till I
got the first error and I didn't realize that portage had upgraded  perl
-- the only thing I would like portage to do is to know that something
must be run and stop so I can do this.  You could have a list of
packages which require a stop after emerging or something.  I am
thinking out loud here, but this is what I am trying to say.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici@ccs.covici.com

Re: [gentoo-user] Re: I don't understand Perl. What do I do after an update?

[Volker Armin Hemmann]

On Donnerstag 22 Juli 2010, covici@ccs.covici.com wrote:
> Alan McKinnon <alan.mckinnon@gmail.com> wrote:
> > On Wednesday 21 July 2010 23:14:35 covici@ccs.covici.com wrote:
> > > > This is a painful process. It's enough to drive a sysadmin to drink
> > > > or (god  forbid), to Windows. Portage can't help as the ebuild
> > > > doesn't know what you have installed. So you must run a script to go
> > > > and dig out all this crap for you.
> > > > 
> > > > 
> > > > 
> > > > All I can say is, every day I get down on my knees and offer thanks
> > > > that perl  is not slotted.
> > > 
> > > But portage should be sensible enough to either run this for you, or
> > > stop emerging -- I had a lot of trouble during the last update where I
> > > kept getting errors and I emerged a couple of them before I knew I had
> > > to run perl-cleaner.
> > 
> > You haven't thought this through and haven't consider how portage knows
> > what to do.
> > 
> > Portage doesn't do it because portage can't.
> > You want portage to do it != portage can do it.
> > 
> > Consider this:
> > 
> > [I] dev-lang/perl
> > 
> >      Installed versions:  5.12.1-r1(23:11:24 21/07/10)(berkdb gdbm -build
> >      -
> > 
> > debug -doc -ithreads)
> > 
> > [I] dev-perl/DateManip
> > 
> >      Installed versions:  5.56(19:39:11 17/07/10)(-test)
> > 
> > When I upgraded perl to 5.12.1-r1, DateManip was not upgraded. Why not?
> > because it's version number did not change and that is the ONLY thing
> > portage considers. DateManip depends on perl, not on
> > =perl-whatever-I-used-to-have
> > 
> > So portage does not know of the link between these two things and cannot
> > take them into account. Portage won't be expanded anytime soon either -
> > you saw how long it took for perl-cleaner to run, must portage go
> > through something like that with every emerge?
> > 
> > Similarly, one could say portage should detect rev-dep breakage.
> > Surprise! It doesn't. revdep-rebuild does that (comparable to
> > perl-cleaner) and you know how long that takes to run.
> > 
> > So you wasted some time with an upgrade. Well that's a shame. But we
> > don't care much, especially if you don't read the elog messages. If you
> > feel that portage should does this automagically, and have a plan to
> > make it run REAL quick, and have proven, workable, debugged, solid,
> > stable patches, then I'm sure Zac would be very happy indeed to hear
> > from you.
> > 
> > In the meantime, read the elog messages.
> 
> But I could not read the elog messages, 

you can either read them with elogv or have portage send them per email 
whereever you want. So you can read them, while emerging other stuff.