Only doesn't seem to work anymore. (at least not on 10.10 which is the version we're still on.

It's been a while since I've played with carton, but having to use carton exec to start the software is less than ideal imo, and I'm still not sure that it allows for the same application to be running multiple versions of a package. Picking a particular version of a library is pretty straight forward, it's running multiple at the same time that stumps me. Here's some code I put together to pick a particular version:

package LoadModule;
use strict;
use warnings;


my $wantedPackages;
my $INC_LOADED;

sub import
{
    my $pkg = shift;
    my ($module, $version) = @_;

    $wantedPackages->{$module} = $version;
    push(@INC, \&loadLib) unless($INC_LOADED);
    $INC_LOADED = 1;
}

sub loadLib
{
    my ($codeRef, $filename) = @_;

    my $moduleName = $filename;
    # Strip the implied pm
    $moduleName =~ s/\.pm$//;

    if(exists $wantedPackages->{$moduleName})
    {
        my $package = $moduleName . "-" . $wantedPackages->{$moduleNam
+e} . ".pm";
        if(-e "./lib/$package")
        {
            my $fh;
            open($fh, "<", "./lib/$package") || die "Can't open ./lib/
+$package: $!";
            return($fh);
        }
    }
    else
    {
        return undef;
    }
}
1;
[download]

Below is how loadModule is used

package TestModule1;

use LoadModule MyLib => 'v1';
use MyLib;

sub doPrint
{
    MyLib::foo();
}
1;
[download]

In the example above I have

lib/MyLib-v1.pm
and
lib/MyLib-v2.pm
[download]

Both with slightly different behavior but with the same overall code.

Tihs works great for the first module loaded. However, if I load other version of the same module they don't seem to get loaded (I suspect there's namespace collision).