This is not the case. On an unmodified perl running perl -MDerp::Derp outputs:

perl -MDerp::Derp
Can't locate Derp/Derp.pm in @INC (you may need to install the Derp::D
+erp module) (@INC entries checked: /usr/lib/perl5/5.42/site_perl /usr
+/share/perl5/site_perl /usr/lib/perl5/5.42/vendor_perl /usr/share/per
+l5/vendor_perl /usr/lib/perl5/5.42/core_perl /usr/share/perl5/core_pe
+rl).
BEGIN failed--compilation aborted.
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Calling the same way from the patched perl produces the output shown here. From within a script we get the expected result:

cat test.pl
use Derp::Derp;

~/localperl/bin
./perl test.pl
Can't locate Derp/Derp.pm in @INC

See: perldoc -v @INC

You may need to install the Derp::Derp module:
https://metacpan.org/search?q=Derp::Derp

@INC entries checked:

  /home/marto/localperl/lib/site_perl/5.42.0/x86_64-linux
  /home/marto/localperl/lib/site_perl/5.42.0
  /home/marto/localperl/lib/5.42.0/x86_64-linux
  /home/marto/localperl/lib/5.42.0 at test.pl line 1.
BEGIN failed--compilation aborted at test.pl line 1.

~/localperl/bin
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