Checking if your kit is complete... Looks good Writing Makefile for Env::Modulecmd /home/cpanrun/build/5.6.1/bin/perl -p filter blib/lib/Env/Modulecmd.pm Manifying blib/man3/Env::Modulecmd.3 PERL_DL_NONLAZY=1 /home/cpanrun/build/5.6.1/bin/perl -Iblib/arch -Iblib/lib -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi -I/home/cpanrun/build/5.6.1/lib/5.6.1 test.pl 1..3 Unable to execute 'modulecmd perl use .': -> -> ***** ERROR ***** -> -> Env::Modulecmd was not able to invoke 'modulecmd'. This means -> one of two things: -> -> 1. You do not have the 'modules' package installed. See -> http://www.modules.org for more information about this -> package. If you don't have it, Env::Modulecmd is probably -> not of any use to you. -> -> 2. You do have the 'modules' package installed, but -> Env::Modulecmd was not able to find 'modulecmd'. There -> are three ways to correct this problem: -> -> a. Put 'modulecmd' in your PATH -> b. Set the environment variable PERL_MODULECMD to the full -> path to 'modulecmd' -> c. Rebuild the Env::Modulecmd package with a default -> PERL_MODULECMD; see the README for more information -> Error loading module . at test.pl line 18 make: *** [test_dynamic] Error 255