error: Base class package "Class::Accessor" is empty

[danielcavanagh]

this is on macos 12.4

> perl -W -MNeovim::Ext -e ''
Base class package "Class::Accessor" is empty.
    (Perhaps you need to 'use' the module which defines that package first,
    or make that module available in @INC (@INC contains: /Users/dcavanagh1/perl5/lib/perl5/darwin-thread-multi-2level /Users/dcavanagh1/perl5/lib/perl5 /usr/local/Cellar/perl/5.34.0/lib/perl5/site_perl/5.34.0/darwin-thread-multi-2level /usr/local/Cellar/perl/5.34.0/lib/perl5/site_perl/5.34.0 /usr/local/Cellar/perl/5.34.0/lib/perl5/5.34.0/darwin-thread-multi-2level /usr/local/Cellar/perl/5.34.0/lib/perl5/5.34.0 /usr/local/lib/perl5/site_perl/5.34.0).
 at /Users/dcavanagh1/perl5/lib/perl5/Neovim/Ext.pm line 5.
BEGIN failed--compilation aborted at /Users/dcavanagh1/perl5/lib/perl5/Neovim/Ext.pm line 5.
Compilation failed in require.
BEGIN failed--compilation aborted.

yet...

> cpanm Class::Accessor
Class::Accessor is up to date. (0.51)

any ideas?

[jacquesg]

Seems like you have the PERL5LIB environment variable set, and it looks like you are mixing 2 different perl installations's modules (the version numbers are the same, but their build options may differ) i.e.

/usr/local/Cellar/perl/5.34.0/lib/perl5/site_perl/5.34.0
/usr/local/Cellar/perl/5.34.0/lib/perl5/5.34.0

and

/usr/local/lib/perl5/site_perl/5.34.0

[danielcavanagh]

Hmm. /usr/local/lib/perl5/site_perl/5.34.0 doesn't seem to exist at all. /usr/local/lib/perl5/5.34.0/ does and everything inside it is symlinked to /usr/local/Cellar/perl/5.34.0/lib/perl5/5.34.0, so they seem to be the same

PERL5LIB == /Users/dcavanagh1/perl5/lib/perl5, however I've tried unsetting it and I'm still getting the same issue

I believe cpanm is installing to /Users/dcavanagh1/perl5/lib/perl5 and I can see the Class::Accessor and Neovim::Ext packages there

I've just tried removing all of perl and its packages and reinstalling everything. I tried cpanm Neovim::Ext but the tests failed. cpanm -n Neovim::Ext worked fine. I have the original error still

Any other ideas?

[danielcavanagh]

Feel free to close this if you think it's just cause of something funny in my environment. It's not important to me so I'm going to give up. Cheers

[jacquesg]

I'm honestly not sure why this isn't working for you. Have you tried using a perl from perlbrew?

[huyz]

I ran into the same error on Linux, so this may or may not help you.
It turns out I was using the system cpanm from apt. If instead, I install cpanm from my user account using: curl -L https://cpanmin.us | perl - App::cpanminus all the environment is consistent and I don't get that error anymore.

Now, on macOS, I also got errors, albeit different from the one you stated, if I do brew install cpananimus. Again, I had to resort to installing the recommended manufacturer way and it worked:

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