in reply to Re^2: Upgrading XS module to later version
in thread Upgrading XS module to later version

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

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Re^4: Upgrading XS module to later version
by Anonymous Monk on Feb 11, 2022 at 16:35 UTC
    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

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    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

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    and cpan is installed with 
       curl -L https://cpanmin.us | perl - App::cpanminus

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    The command " which cpan cpanm " results in displaying the version in 
       $PREFIX/bin/cpan
   $PREFIX/bin/cpanm

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      What's the output of 

      which perl
which cpan
which cpanm
head -n 1 "$( which cpan )"
head -n 1 "$( which cpanm )"

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