Attempting to install Perl::Critic 1.102 via CPANPLUS from 5.10.1-RC1 fails due to what CPANPLUS is doing with the Module::Build mention in configure_requires. This version of P::C was built with perl 5.10.0 and M::B 0.34_02 (the same one included in 5.10.1). M::B puts its own version into configure_requires. I've got CPANPLUS pointed at a minicpan, which, obviously, only includes M::B 0.34. Despite already having the correct version of M::B already installed, CPANPLUS refuses to install P::C. Important part of the CPANPLUS output: [MSG] Extracted 'Perl::Critic' to '/Users/elliot/opt/perl/perl-5.10/cpanplus/5.10.1/build/Perl-Critic-1.102' [ERROR] This distribution depends on Module::Build, but the latest version of Module::Build on CPAN (0.34) doesn't satisfy the specific version dependency (0.3402). You may have to resolve this dependency manually. [MSG] Module 'Perl::Critic' requires 'Module::Build' version '0.3402' to be installed [ERROR] This distribution depends on Module::Build, but the latest version of Module::Build on CPAN (0.34) doesn't satisfy the specific version dependency (0.3402). You may have to resolve this dependency manually. [ERROR] Prerequisite 'Module::Build' is perl-core (Module-Build-0.34.tar.gz) -- not installing that. Aborting install [ERROR] Unable to satisfy 'configure_requires' for 'Perl::Critic' -- aborting installThread Next