Anyone with suggestions I can try to get the CHECKSUMS working
I don't use the default CPAN client. But the two suggestions I have:
- Don't override the mirror; per my understanding of the blog post, an extra layer of security can be added by the main cpan.org site that isn't available on the mirrors. (I am not a security expert; this is just what I've gathered.)
Back in the 90s, with the much slower network backbone speeds available, and not many resources behind any individual machine name, it made sense to have a mirroring system and pick a nearby mirror. But in today's load-balanced systems, where the same machine name (www.cpan.org) can point to any number of physical machines that are serving out those results, possibly in geographically separate locations, there isn't as much need for the mirror. (I am not a networking expert; this is just what I've gathered.)
- The warning said that your system didn't trust the PAUSE key; that is a GPG-related topic. If you believe me when I say that I believe PAUSE publishes their public key at https://pause.perl.org/pause/query?ACTION=pause_04about#pubkeybat and that the fingerprint that your warning printed out was the same as the fingerprint published there, and if you believe that the key shown there really is the PAUSE Batch Signing Key, then you might want to import that public key into your keyring -- I believe this will eliminate that error.
However, I don't know that I'm convinced either of those will solve your problem: the message you quoted originally says that the actual CHECKSUMS file signature was okay; the problem it seemed to have was with opening a temporary CHECKSUMS.77905 file that wasn't there; I do not know what that file is, as compared to the CHECKSUMS file that was downloaded when you tried to get the package. I don't know whether doing the two above things will allow that temporary file to be correctly generated/extracted and thus allow the process to move forward. But since you were asking for any suggestions for things to try, I think this qualifies, fruitful or not ;-).