Re: How to CPAN dry run ?

How do I perform a dry run of a module installation ?

What do you want to dry run against? Your current situated environment? A Windows, Linux or MacOS installation nearby? Do you want to ensure compilation of low-level code that isn't pure perl?

Your question is very vague. It almost seems as though you have a complaint against an unimplemented flag, yet you haven't provided any tests or anything.

You don't 'execute' downloads. If a distribution has direction, it is often make test. Done. All tests performed, including dependency checks, and nothing installed.

Comment on Re: How to CPAN dry run ? Download Code

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Re^2: How to CPAN dry run ? by choroba (Cardinal) on Aug 30, 2024 at 08:46 UTC
> it is often `make test`. Done. All tests performed, including dependency checks, and nothing installed. It already installs all the dependencies. `map{substr$_->[0],$_->[1]\|\|0,1}[\\|\|{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^ARGV,3]`	[reply] [d/l] [select]
Re^3: How to CPAN dry run ? by stevieb (Canon) on Aug 30, 2024 at 08:49 UTC
I stand corrected.	[reply]
Re^2: How to CPAN dry run ? by marto (Cardinal) on Aug 30, 2024 at 08:27 UTC
"Your question is very vague. It almost seems as though you have a complaint against an unimplemented flag, yet you haven't provided any tests or anything." It's not a complaint, it's an observation based on what the documentation tells people: "Do a dry run, but don't actually install anything. (unimplemented)" I'd argue the question isn't vague, since they ask how to do a specific thing.	[reply]
Re^2: How to CPAN dry run ? by mvanle (Acolyte) on Aug 31, 2024 at 11:04 UTC
What do you want to dry run against? Your current situated environment? A Windows, Linux or MacOS installation nearby? Do you want to ensure compilation of low-level code that isn't pure perl? I want to review whatever `cpan` is doing (or going to do), and pre-determine the success of an operation before it actually modifies or installs anything, especially on a production server. I could tolerate it downloading and installing things into 1 single known temporary directory that I can `rm -rf` afterwards as long as I can isolate all of its changes (and [preferably] easily rollback). I'm also surprised the `-n` option still isn't implemented after +10 years.	[reply] [d/l] [select]
Re^3: How to CPAN dry run ? by afoken (Chancellor) on Aug 31, 2024 at 11:33 UTC
I want to review whatever cpan is doing (or going to do), and pre-determine the success of an operation before it actually modifies or installs anything, especially on a production server. That's why you should have a test/staging server configured in the same way as the production server. Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply]


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