eval "use $foo";
die $@ if $@ # die with error message if it failed

[download]
will do it but it will do it at runtime, whereas a genuine use will do it at compile time. If you do 
BEGIN
{
  my $foo = get_a_module_name();
  eval "use $foo";
  die $@ if $@
}

[download]
it will happen at compile time, you just need to be careful that $foo has a value at compile time.

In reply to Re: Using arbitrary packages by fergal
in thread Using arbitrary packages by Sprad

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