Re^2: CPAN, recursive dependency problem

Replies are listed 'Best First'.
Re^3: CPAN, recursive dependency problem by saintmike (Vicar) on Jan 28, 2005 at 05:56 UTC
It's worth pointing out that CPAN will also not allow a "get" of a module in a dependency chain ... Not true. Here's a quick way to verify dependencies (even circular ones): There's two modules on CPAN with the sole purpose of defining a circular dependency between each other: Acme::Prereq::A and Acme::Prereq::B. `Acme::Prereq::A` depends on `Acme::Prereq::B` and vice versa, see `Acme::Prereq::A`'s Makefile.PL: `'PREREQ_PM' => { 'Acme::Prereq::B' => 0, }, # e.g., Module::Name => 1.1` [download] Try it out, it works fine: `perl -MCPAN -eshell cpan> get Acme::Prereq::B` [download] The CPAN shell's `get` command will fetch the requested module's tarball without checking dependencies. However, if you've run into a recursive dependency within a CPAN session, CPAN.pm will keep complaining, even if you switch to `get`. Restart the CPAN shell to get back to normal.	[reply] [d/l] [select]

Replies are listed 'Best First'.

Re^3: CPAN, recursive dependency problem
by saintmike (Vicar) on Jan 28, 2005 at 05:56 UTC

It's worth pointing out that CPAN will also not allow a "get" of a module in a dependency chain ...

Not true.

Here's a quick way to verify dependencies (even circular ones): There's two modules on CPAN with the sole purpose of defining a circular dependency between each other: Acme::Prereq::A and Acme::Prereq::B.

Acme::Prereq::A depends on Acme::Prereq::B and vice versa, see Acme::Prereq::A's Makefile.PL:

    'PREREQ_PM'    => {
                         'Acme::Prereq::B' => 0,
                      }, # e.g., Module::Name => 1.1
[download]

Try it out, it works fine:

    perl -MCPAN -eshell
    cpan> get Acme::Prereq::B
[download]

The CPAN shell's get command will fetch the requested module's tarball without checking dependencies.

However, if you've run into a recursive dependency within a CPAN session, CPAN.pm will keep complaining, even if you switch to get. Restart the CPAN shell to get back to normal.

[reply]
[d/l]
[select]