pp uses Module::ScanDeps to find dependencies, and it looks like it is not properly parsing lines containing /use\s+\d/

Using the current version of Module::ScanDeps:

perl -MModule::ScanDeps -e"print $Module::ScanDeps::VERSION"
1.23
[download]

and shortening the code somewhat:

use utf8; use strict; use List::Util qw(max); use Date::Calc qw(Delta_
+Days); use 42;
[download]

And then running it through scandeps.bat (in this case the code is in use_on_one_line_42_at_end.pl).

scandeps use_on_one_line_42_at_end.pl
'Portable'                      => '1.22',
'File::Which'                   => '1.21',
'CryptX'                        => '0.044',
'Portable::CPAN'                => '1.22',
'Portable::Config'              => '1.22',
'Portable::HomeDir'             => '1.22',
'Portable::LoadYaml'            => '1.22',
'Portable::minicpan'            => '1.22',
'Portable::FileSpec'            => '1.22',
'File::HomeDir'                 => '1.00',
'File::HomeDir::Darwin::Carbon' => '1.00',
'File::HomeDir::Darwin::Cocoa'  => '1.00',
'File::HomeDir::FreeDesktop'    => '1.00',
'File::HomeDir::MacOS9'         => '1.00',
'File::HomeDir::Test'           => '1.00',
'File::HomeDir::Windows'        => '1.00',
'File::HomeDir::Unix'           => '1.00',
'File::HomeDir::Darwin'         => '1.00',
'File::HomeDir::Driver'         => '1.00',
'Math::BigInt::GMP'             => '1.6003',
'Math::BigInt::LTM'             => '0.044',
[download]

The above also does not list List::Util, but that can be done using the -B flag in the scandeps.pl call

In fact, the issue also manifests in one-liners as these two are also missing Date::Calc in their outputs:

scandeps -e"use 5.022; use Date::Calc"
scandeps -e"use Date::Calc; use 5.022"
[download]

But on further checking, it is triggered for any value >= 5.01

These list Date::Calc and Date::Calc::PP

scandeps -e"use 5.009; use Date::Calc"
scandeps -e"use 4; use Date::Calc"
[download]

This does not:

And for general reference:

scandeps -e"use 5.009;"
No modules found!
[download]

It can also be reproduced using other modules. This one-liner does not list Text::CSV_XS.

It is probably worth raising as a Module::ScanDeps issue.