cetskelgen cannot Can't locate Module/Pluggable.pm in @INC

[tomjunk]

In the LArSoft spack environment

<dunegpvm14.fnal.gov> source /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/setup-env.sh
<dunegpvm14.fnal.gov> spack env list
==> 1 environments
larsoft-09-90-01-gcc-12-2-0-cxx17-prof-gcc-11-4-1
<dunegpvm14.fnal.gov> spack env activate larsoft-09-90-01-gcc-12-2-0-cxx17-prof-gcc-11-4-1
<dunegpvm14.fnal.gov> spack load larsoft
<dunegpvm14.fnal.gov> cetskelgen -h
Can't locate Module/Pluggable.pm in @inc (you may need to install the Module::Pluggable module) (@inc contains: /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-11.4.1/postgresql-15.2-u7jcnwkeslwfk2bjkoqd2u7dxhvbszmd/lib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-11.4.1/postgresql-15.2-u7jcnwkeslwfk2bjkoqd2u7dxhvbszmd/lib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-11.4.1/postgresql-15.2-u7jcnwkeslwfk2bjkoqd2u7dxhvbszmd/lib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-11.4.1/postgresql-15.2-u7jcnwkeslwfk2bjkoqd2u7dxhvbszmd/lib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-11.4.1/postgresql-15.2-u7jcnwkeslwfk2bjkoqd2u7dxhvbszmd/lib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-11.4.1/postgresql-15.2-u7jcnwkeslwfk2bjkoqd2u7dxhvbszmd/lib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-12.2.0/art-3.14.04-ece5pmni5k5jagpxify7gnfz7grrggfp/perllib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-12.2.0/messagefacility-2.10.05-zlo2xyvejgasiza3mf3uefmpcwi7wihx/perllib /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-12.2.0/cetlib-3.18.02-dgymnf2je65nzfmp3lnxpap3meb7v25z/perllib /usr/local/lib64/perl5/5.32 /usr/local/share/perl5/5.32 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-12.2.0/cetlib-3.18.02-dgymnf2je65nzfmp3lnxpap3meb7v25z/bin/cetskelgen line 57.
BEGIN failed--compilation aborted at /cvmfs/larsoft.opensciencegrid.org/spack-v0.22.0-fermi/opt/spack/linux-almalinux9-x86_64_v3/gcc-12.2.0/cetlib-3.18.02-dgymnf2je65nzfmp3lnxpap3meb7v25z/bin/cetskelgen line 57.

A very similar error appears in the larsoft-09-81-00-gcc-12-2-0-cxx17-prof-gcc-11-4-1 environment.

Could be a system dependency and not something needed in the spack tree? Denis Torres also sees this in the public SL7 container.