Usually a simple alias BEGIN{ *var=\$DEBUG::var}; is what I remember working -- USED it TONS of times.
{
    package DEBUG;
    our $var = 'foo';
}

{
    package main;
    BEGIN { *var = \$DEBUG::var };
    print "Var is $var\n";
}

$ perl debug_begin.pl
Variable "$var" is not imported at debug_begin.pl line 14.
Global symbol "$var" requires explicit package name at debug_begin.pl 
+line 14.
Execution of debug_begin.pl aborted due to compilation errors.
$ perl -v

This is perl, v5.8.9 built for x86_64-linux

[download]

(Hint: our scope in this example and still the mess of compilation time versus run time in your longer example.)

In reply to Re^19: can't import using exporter by chromatic
in thread can't import using exporter by perl-diddler

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