This message appears when installing Linenoise <--- $ zef install Linenoise ===> Installing: Linenoise:ver<0.1.1>:auth<Rob Hoelz> Use of Nil in string context in block at home#sources/0BDF8C54D33921FEA066491D8D13C96A7CB144B9 (Linenoise) line 15 ---> The above mentioned line is: <--- $ sed -n '15p' .perl6/sources/0BDF8C54D33921FEA066491D8D13C96A7CB144B9 my constant LIBLINENOISE = %?RESOURCES<libraries/linenoise>.Str; ---> This is a post on the %?RESOURCES variable: https://hoelz.ro/blog/distributing-helper-libraries-with-perl6-modules Nevertheless, I have fail to to solve this issue. Any hints appreciated. Thanks! P.D.: Perl6 info: <--- $ perl6 -v This is Rakudo version 2018.02 built on MoarVM version 2018.02 implementing Perl 6.c. ---> -- (≧∇≦) Mimosinnet (Linux User: #463211)Thread Next