PerlMonks - Newest Nodes

Failed 2 tests on CygPerl for Test2::Harness; would a newer perl pass?

Intrepid — Wed, 15 Apr 2026 18:44:09 +0000

I tried installing Test2::Harness and a couple tests failed. I am not totally understanding the output and if someone knowledgeable could interpret this for me I'd be grateful. ...

metacpan fastapi can't find the Config module

Anonymous Monk — Wed, 15 Apr 2026 14:39:17 +0000

I ran into this problem looking up module versions with fastapi on metacpan: % perl -MHTTP::Tiny -MJSON::PP -le 'print decode_json(HTTP::Tiny->new->get("https://fastapi.metacpan.org/v1/module...

ExtUtils::Installed fails to find Catalyst because it doesn't have a .packlist

Anonymous Monk — Wed, 15 Apr 2026 14:27:33 +0000

% perl -MExtUtils::Installed -le 'print for ExtUtils::Installed->new->files("Catalyst")' Catalyst is not installed at -e line 1. % perl -MModule::Metadata -le 'print Module::Metadata->ne...

Perlbrew fails to install perl but reports success

Anonymous Monk — Tue, 14 Apr 2026 17:16:26 +0000

% perlbrew install -v perl-5.8.9 ... DB_File.xs:998:34: error: incompatible function pointer types assigning to 'u_int32_t (*)(const void *, size_t)' (aka 'unsigned int (*)(const void *, uns...

Re^11: Reusing a complex regexp in multiple spots, escaping the regexp

LanX — Thu, 16 Apr 2026 17:01:15 +0000

You are showing a semantic where /o MUST NOT be applied. Obviously you shouldn't inhibit recompilation if you need recompilation. One of the links sleet listed upthread (or the docs🤔)...

Re^10: Reusing a complex regexp in multiple spots, escaping the regexp

tobyink — Thu, 16 Apr 2026 15:05:48 +0000

I think that's what /o was invented for If a regexp contains something interpolated, I don't know if /o can do much for it. Consider: my...

Re^9: Reusing a complex regexp in multiple spots, escaping the regexp

LanX — Thu, 16 Apr 2026 14:39:08 +0000

> Pretty sure they're not kept as nested objects. That was my first intuition, and looks like we were right, the final program is the same for the flattened string. $ perl ...

Re^8: Reusing a complex regexp in multiple spots, escaping the regexp

tobyink — Thu, 16 Apr 2026 13:00:25 +0000

Pretty sure they're not kept as nested objects. I believe when the larger regexp is being compiled, any nested regexps are simply stringified and interpolated into it. In the original pos...

Re^7: Reusing a complex regexp in multiple spots, escaping the regexp

LanX — Thu, 16 Apr 2026 12:27:24 +0000

I'm still not convinced that nesting qr// snippets into larger qr// parts is such a show stopper. Are they stored as nested objects causing overhead? (Hmm probably... I read som...

Re: ExtUtils::Installed fails to find Catalyst because it doesn't have a .packlist

Haarg — Thu, 16 Apr 2026 12:02:05 +0000

ExtUtils::Installed's files method expects you to pass it the "main" module of a dist. For Catalyst, this is Catalyst::Runtime. ...

Re: Failed 2 tests on CygPerl for Test2::Harness; would a newer perl pass?

hippo — Thu, 16 Apr 2026 09:31:03 +0000

Please don't use tags for large swathes of output like this. Use tags in preference. Thanks. 🦛 ...

Re: ExtUtils::Installed fails to find Catalyst because it doesn't have a .packlist

hippo — Thu, 16 Apr 2026 09:28:06 +0000

ls -l /perl5/perlbrew/perls/perl-5.42.0/lib/site_perl/5.42.0/darwin-2level/auto/CGI -rw-r--r-- 1 user staff 1.3K Jan 2 00:34 .packlist drwxr-xr-x 3 user staff 96B J...

Re: metacpan fastapi can't find the Config module

hippo — Thu, 16 Apr 2026 09:11:08 +0000

fastapi returns a 404 code when you request info on a module which doesn't exist on CPAN. This is by design. You say you ran into a problem but I'm not seeing any problem in what you have...

Re: Failed 2 tests on CygPerl for Test2::Harness; would a newer perl pass?

tobyink — Thu, 16 Apr 2026 08:33:57 +0000

I'm currently running yath (though an older version) on Perl 5.38 and it's fine. CPAN Testers shows a mixture o...

Re^6: Reusing a complex regexp in multiple spots, escaping the regexp

sleet — Wed, 15 Apr 2026 22:32:15 +0000

Note the (?(DEFINE)...) construct has it's own performance issue. From (DEFINE): patterns defined this way probably will not be as efficient, as the optimize...

Re^5: Reusing a complex regexp in multiple spots, escaping the regexp

LanX — Wed, 15 Apr 2026 20:27:17 +0000

Hmm interesting, and it seems there is no consensus what's happening. Dave_the_m says the qr object is always duplicated because matches depend on scope. Aristotle says, using an a...

Re^4: Reusing a complex regexp in multiple spots, escaping the regexp

sleet — Wed, 15 Apr 2026 18:01:42 +0000

It's also far less efficient (though perhaps not enough to matter). It surprises many people that qr is slower than expected: Performance penalty of using qr// ...

Re^3: ExtUtils::Installed fails to find Catalyst because it doesn't have a .packlist

Corion — Wed, 15 Apr 2026 17:32:37 +0000

Meta: Consider adding such information to your top post in the first place instead of waiting for replies trying to find out what your actual problem or question is. Maybe also consider phrasing th...

Re^2: ExtUtils::Installed fails to find Catalyst because it doesn't have a .packlist

Anonymous Monk — Wed, 15 Apr 2026 17:00:14 +0000

I think ExtUtils::Install creates the .packlist during make install. It was installed by cpanm like all my other modules and a reinstall did not create a .packlist. Going through the Catal...

Re^2: ExtUtils::Installed fails to find Catalyst because it doesn't have a .packlist

roho — Wed, 15 Apr 2026 16:16:44 +0000

I agree with Corion's advice. I prefer the package installer route that creates .packlist for you. ...

Re: metacpan fastapi can't find the Config module

LanX — Wed, 15 Apr 2026 14:50:14 +0000

What's the question? If it was is a bug you should file a bug report. But my guess is that you meant config which is lower case. Edit Ugh .....

Re: ExtUtils::Installed fails to find Catalyst because it doesn't have a .packlist

Corion — Wed, 15 Apr 2026 14:37:48 +0000

So consider (re)installing Catalyst with a package installer that creates a .packlist file, or create it yourself?...

Re^4: Reusing a complex regexp in multiple spots, escaping the regexp

LanX — Wed, 15 Apr 2026 09:42:51 +0000

> A whole bunch of qr// requires so much more noise. It's far less readable I can't follow... I'm sure I could take Hauke's example and translate it 1to1 using ...

Re^3: Reusing a complex regexp in multiple spots, escaping the regexp

ikegami — Tue, 14 Apr 2026 19:18:13 +0000

A whole bunch of qr// requires so much more noise. It's far less readable. It's also far less efficient (though perhaps not enough to matter). But you have a point about testability....

Re: Perlbrew fails to install perl but reports success

ikegami — Tue, 14 Apr 2026 19:11:39 +0000

perlbrew always says it successfully installs. This isn't new....

Re: Perlbrew fails to install perl but reports success

choroba — Tue, 14 Apr 2026 19:06:54 +0000

You can report the issue to perlbrew's developer. ...

jjsloan

jjsloan — Thu, 16 Apr 2026 23:58:57 +0000