You should probably use ExtUtils::MakeMaker's prompt() function in your Makefile.PL to ask the user what (s)he wants to install.

For instance: 

use ExtUtils::MakeMaker;

my @dbds = qw(DBD::mysql DBD::Pg); # whatever
my @installed = grep { eval "require $_" } @dbds;

my $answer = prompt ("I can use the following drivers: @dbds. 
You have the following drivers installed: @installed
Please type the drivers you want to test, seperated by a space:","@ins
+talled");

my @use = split / /,$anser;

open  F,"> dbds_for_testing.pl" or die $!;
print F "\@DRIVERS = qw($answer);";
close F;

WriteMakefile(
    # ....
    'PREREQ_PM'     => {
        map { $_ => 0 } @use
    }, # e.g., Module::Name => 1.i

    # ....
);

[download]
And you can then do "dbds_for_testing.pl" in your test code to see which drivers you need to test and skip the others.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Module configuration for user vs. developer by Joost
in thread Module configuration for user vs. developer by bibliophile

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.