t/script.t should preserve PERL5LIB

[eserte]

t/script.t sets PERL5LIB for later script executions. Unfortunately this means that a previous PERL5LIB is overwritten. This may actually cause test failures like this:

/foo: Can't locate Params/Validate.pm in @INC (you may need to install the Params::Validate module) (@INC contains: lib /usr/perl5.18.4p/lib/site_perl/5.18.4/amd64-freebsd /usr/perl5.18.4p/lib/site_perl/5.18.4 /usr/perl5.18.4p/lib/5.18.4/amd64-freebsd /usr/perl5.18.4p/lib/5.18.4 .) at lib/Morpheus/Plugin/File.pm line 13.
BEGIN failed--compilation aborted at lib/Morpheus/Plugin/File.pm line 13.
Compilation failed in require at lib/Morpheus/Bootstrap/Extra.pm line 11.
BEGIN failed--compilation aborted at lib/Morpheus/Bootstrap/Extra.pm line 11.
Compilation failed in require at lib/Morpheus/Bootstrap.pm line 44.

#   Failed test 'morph without arguments prints json'
#   at t/script.t line 21.
#          got: ''
#     expected: '{
#    "bar" : 5
# }
# '
...

(Test failures happen only if CPAN.pm runs in "test"-only mode)

Probably you should use something like (untested) $ENV{PERL5LIB} .= ":lib".