NAME Acme::CPANModules::CheckingModuleInstalledLoadable - Checking if a module is installed or loadable VERSION This document describes version 0.001 of Acme::CPANModules::CheckingModuleInstalledLoadable (from Perl distribution Acme-CPANModules-CheckingModuleInstalledLoadable), released on 2019-01-09. DESCRIPTION Checking if a module is installed or loadable. If you simply want to check that a module's ".pm" file is locatable in @INC, you can just do something like: my $mod = "Foo/Bar.pm"; for my $dir (@INC) { next if ref $dir; if (-f "$dir/$mod") { print "Module $mod is installed"; last; } } Or you can use something like Module::Path or Module::Path::More which does similar to the above. A module can also be loaded from a require hook in ~@INC~ (like in the case of fatpacked or datapacked script) and the above methods does not handle it. Instead, you'll need to use Module::Load::Conditional's "check_install" or Module::Installed::Tiny's "module_installed": use Module::Load::Conditional qw(check_install); if (check_install(module => "Foo::Bar")) { # Foo::Bar is installed } The above does not guarantee that the module will be loaded successfully. To check that, there's no other way but to actually try to load it: if (eval { require Foo::Bar; 1 }) { # Foo::Bar can be loaded (and was loaded!) } INCLUDED MODULES * Module::Path * Module::Path::More * Module::Load::Conditional * Module::Installed::Tiny HOMEPAGE Please visit the project's homepage at . SOURCE Source repository is at . BUGS Please report any bugs or feature requests on the bugtracker website When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature. SEE ALSO Acme::CPANModules - about the Acme::CPANModules namespace cpanmodules - CLI tool to let you browse/view the lists AUTHOR perlancar COPYRIGHT AND LICENSE This software is copyright (c) 2019 by perlancar@cpan.org. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.