dump env vars
ZEF_TEST_DEGREE=1
ZEF_FETCH_DEGREE=1
install [Bitcoin]
...
/tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/site/bin/zef
1.0.0
/tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/bin//raku
Welcome to Rakudo™ v2025.11.
Implementing the Raku® Programming Language v6.d.
Built on MoarVM version 2025.11.
===> Searching for: Bitcoin
===SORRY!=== Error while compiling /root/.sparky/.cache/azbuxkwlenojicfpmgyt.126/.sparrowdo/site#sources/6C9755E231145FC4A107C51B44E37DA7AD8637C3 (BIP32)
Could not find Digest::HMAC:auth<grondilu> in:
    /tmp/.zef.1764086335.141028/1764086345.141028.1074.6958642564607
    /tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/site
    /tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/vendor
    /tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/core
    CompUnit::Repository::AbsolutePath<3755899457240>
    CompUnit::Repository::NQP<3755884867680>
    CompUnit::Repository::Perl5<3755884867720>
at /root/.sparky/.cache/azbuxkwlenojicfpmgyt.126/.sparrowdo/site#sources/6C9755E231145FC4A107C51B44E37DA7AD8637C3 (BIP32):2

===> Staging Bitcoin:ver<0.7.1>:auth<zef:grondilu>