I used cpanm client and it's cool and a has a cleaner interface and some interesting experimental features, notably the ability to uninstall modules, not available in the classic cpan classic client.

But, as stated above by Tux with reason a Linux fan, cpanm it's not fully functional on MSWin32 and this is very common for many genial pieces of code by miyagawa. If this is acceptable for example for some webserver PSGI aware (even me I'd put on linux only) it's not for the client used to install modules.

We can like or dislike MSWin32 OSs but they are here and they have big slice of the market. I'm not a fan but I work with it daily so I must be very careful in my choices. I jumped on the strawberry perl charriot many years ago and I'm very happy with it: now I can use perl on MSWin32 the very same way I can use it on linux.

Let's see something:

me@work>cpanm --version

cpanm (App::cpanminus) version 1.7044 (D:\path\perl5.26.64bit\perl\sit
+e\bin/cpanm)
perl version 5.026000 (D:\path\perl5.26.64bit\perl\bin\perl.exe)
[download]

Noticed the path? Is not File::Spec a core module since years?

Infact..

me@work>cpanm --self-upgrade

Can't find Unicode property definition "e" in regex; marked by <-- HER
+E in m/^D:\path\pe <-- HERE rl5.26.64bit\perl\site\bin/ at D:\path\pe
+rl5.26.64bit\perl\site\bin/cpanm line 32.
[download]

Is not the case to translate directory seprators? or to use quotemeta and qr and eval the regex? Ok it' just an alias fo cpanm App::cpanminus but the latter works fine: App::cpanminus is up to date. (1.7044)

Let's test some module:

me@work>cpanm --test-only Text::Xslate

--> Working on Text::Xslate
Fetching http://www.cpan.org/authors/id/S/SK/SKAJI/Text-Xslate-v3.5.6.
+tar.gz ... OK
! Bad archive: Text-Xslate-v3.5.6.tar.gz
! Failed to unpack Text-Xslate-v3.5.6.tar.gz: no directory
! Failed to fetch distribution Text-Xslate-v3.5.6
[download]

Ouch it's my cpanm configuration wrong or broken?

me@work>cpanm --test-only -v Text::Xslate

cpanm (App::cpanminus) 1.7044 on perl 5.026000 built for MSWin32-x64-m
+ulti-thread
Work directory is D:\path\perl5.26.64bit\data/.cpanm/work/1528273179.7
+400
You have make D:\path\perl5.26.64bit\c\bin\gmake.exe
You have LWP 6.26
You have D:\path\bin\UnxUtils\usr\local\wbin\tar.exe, D:\path\bin\UnxU
+tils\usr\local\wbin\gzip.exe and D:\path\bin\UnxUtils\usr\local\wbin\
+bzip2.exe
You have D:\path\bin\UnxUtils\usr\local\wbin\unzip.exe
Searching Text::Xslate () on cpanmetadb ...
--> Working on Text::Xslate
Fetching http://www.cpan.org/authors/id/S/SK/SKAJI/Text-Xslate-v3.5.6.
+tar.gz ... OK
Unpacking Text-Xslate-v3.5.6.tar.gz

...

META.yml
MANIFEST
! Bad archive: Text-Xslate-v3.5.6.tar.gz
! Failed to unpack Text-Xslate-v3.5.6.tar.gz: no directory
! Failed to fetch distribution Text-Xslate-v3.5.6
[download]

Mah? I have all! let's try dear old cpan

cpan> test Text::Xslate
Database was generated on Wed, 06 Jun 2018 07:47:04 GMT

Running test for module 'Text::Xslate'

...

All tests successful.
Files=191, Tests=2740, 130 wallclock secs ( 0.88 usr +  0.41 sys =  1.
+28 CPU)
Result: PASS
  SKAJI/Text-Xslate-v3.5.6.tar.gz
  D:\path\perl5.26.64bit\perl\bin\perl.exe ./Build test -- OK
[download]

So, in conclusion, every better, modern, client upgrade will be welcome if it runs as well and everywhere as the older one.

L*