How do I specify which version of perl is being used when I install a module using cpanm?

You should have two cpanm, one installed with each perl. They will have different shebang (#!) lines.

It's simply a question of using the right cpanm (e.g. by using its full path to launch it). 

head -n 1 /tool/bin/cpanm       # #!/tool/bin/perl
/tool/bin/cpanm Some::Module    # Installs for /tool/bin/perl

[download]

The cpanm script itself should work with any perl, so you could explicitly specify the perl to use as a fallback. 

/tool/bin/perl "$( which cpanm )" Some::Module

[download]

Why do the new modules I installed to /new_location/perl_modules/5.20/lib/perl5 work for both /tool/bin/perl (v5.20.0) and /usr/bin/perl (v5.26.3)

There's no guarantee that using different build will fail.

There's merely no effort made to ensure that it won't fail.

In reply to Re: "symbol lookup error" message help by ikegami
in thread "symbol lookup error" message help by Special_K

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