I have a code in Insert::Foo which is meant to run in each requirer's package: 

# Insert/Foo.pm
our $foo = 1;
1;

# Client1.pm
package Client1;
require Insert::Foo;
# $Client1::foo is set by Insert::Foo
...
1;

# Client2.pm
package Client2;
require Insert::Foo;
# $Client2::foo is set by Insert::Foo
...
1;

[download]

However, if I load Client2 and then Client3, Insert::Foo is not require'd again in Client3, because all modules are only loaded once. I can use do() instead of require(), but then I have to deal with filenames. I can manipulate %INC, but it feels hackish. Surely there's a proper mechanism for doing something like this?

In reply to Require into package by Anonymous Monk

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