Re: Upgrading XS module to later version

[sundialsvc4]

If you felt that you had to “hack” anything, you definitely strayed down the wrong path.   No such thing should be necessary, and, as you can readily guess, it can get you a lot of trouble.   You should be able to treat this like a “install modules as a non-root user on shard-hosting” situation, specifying (within ordinary cpan/cpanm, and in the usual way) your own “local” package directory and of course your own overrides for PERL5LIB.   At that point, you should be able to install any package, including List::Util, and confirm that the desired copy winds up in that designated place.   You should be able to do all of this with no special privileges at all.   (You want the system libraries, as maintained by the opsys’s package manager, to remain “untouchable,” as they are.)

It should not matter whether the package has any “XS” content or not.

Unfortunately, not every package out there correctly specifies the minimum version that it needs for its prerequisites, and some don’t accurately list the prerequisites that they do have.   The result is that cpan/cpanm does not realize that a later version of something needs to be installed as a pre-/co-requisite.   But you ought to be able to manually install it, then repeat the previous installation, and the manually-installed version ought to be properly seen and incorporated.

[Anonymous Monk]

I ran into the same problem, when trying to install cpan Moose, it says that

Installing the dependencies failed: Installed version (1.55) of List::
+Util is not in range '1.56'

Trying to install List::Util with cpanm List::Util seems to work, it show the message

Successfully installed Scalar-List-Utils-1.60 (upgraded from 1.55)

But when then trying to run cpan Moose it complains again about error

Installing the dependencies failed: Installed version (1.55) of List::
+Util is not in range '1.56'

Obviously, cpanm did not upgrade List::Utils. but installed it in a different directory. When I check the installed packages, I get this

$ cpan -l |grep List::Util
List::Util      1.55
List::Util::XS  1.55
Module::CoreList::Utils 5.20210520
List::Util      1.55
List::Util::XS  1.55
Module::CoreList::Utils 5.20210520
List::Util      1.55
List::Util::XS  1.55
site_perl::List::Util   1.60
site_perl::List::Util::XS       1.60
List::Util      1.60
List::Util::XS  1.60
List::Util      1.60
List::Util::XS  1.60
List::Util      1.55
List::Util::XS  1.55
Module::CoreList::Utils 5.20210520
List::Util      1.55
List::Util::XS  1.55

It is not clear to me how to ensure that the newer version should used.

[marto]

do you have multiple perls installed? Are you using perlbrew or local::lib? What does which cpan and which cpanm show?

[Anonymous Monk]

Yes, I've multiple versions of perl.
There are the perl modules from the operation system (in my case Debian 10, or 11, I tested both)
Then I've compiled Perl 5.32.1 and 5.34.0 from source, and I'm trying to install Moose as part of any of these version.
The software will be installed as seperate packages on a computing cluster on an nfs-storage.

I use neither perlbrew nor local::lib, but install from source with

    
    export PREFIX=/my/install/directory/perl/5.34.0/
    ./Configure -des -Dprefix=$PREFIX \
        -Dusethreads \
        -Duseshrplib  \
        -Dinc_version_list=none
   make -j4 && make test && make install

Once perl is installed, these environment variables are set:

   export PERL5LIB=$PREFIX/lib
   export PATH=$PREFIX/bin:$PATH
   export MANPATH=$PREFIX/man:$PATH
   export LD_LIBRARY_PATH=$PREFIX/lib:$LD_LIBRARY_PATH

and cpan is installed with

   curl -L https://cpanmin.us | perl - App::cpanminus

The command " which cpan cpanm " results in displaying the version in

   $PREFIX/bin/cpan
   $PREFIX/bin/cpanm

[ikegami]

By the way, export PERL5LIB=$PREFIX/lib is useless.

(This was supposed to be a reply to Re^4: Upgrading XS module to later version.)

[ikegami]

By the way, export PERL5LIB=$PREFIX/lib is useless.

(sigh, This was supposed to be an update to Re^3: Upgrading XS module to later version.)

[Anonymous Monk]

This is solved now. The packages are installed in $PREFIX/lib/site_perl, and I had to set

 
    PERL5LIB=$PREFIX/lib/site_perl

That seems to fix the issue.

BTW: the information was quite difficult to find, because I did not see any documentation about that, but had to infer this from "man perlrun ->ENVIRONMENT" and from what cpan(m) is doing.