dump env vars
ZEF_TEST_DEGREE=5
ZEF_FETCH_DEGREE=1
install [Algorithm::XGBoost]
...
/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: Algorithm::XGBoost
Aborting due to build failure: Algorithm::XGBoost:ver<0.0.6>:auth<zef:titsuki> (use --force-build to override)
===> Building: Algorithm::XGBoost:ver<0.0.6>:auth<zef:titsuki>
[Algorithm::XGBoost] /bin/sh: 1: cmake: not found
[Algorithm::XGBoost] The spawned command 'cmake . && make' exited unsuccessfully (exit code: 127, signal: 0)
[Algorithm::XGBoost]   in method build at /tmp/.zef.1764079169.76773/1d6310f527ee9792a98738c6a74d65f5862f614d.tar.gz/Algorithm-XGBoost-0.0.6/lib/Algorithm/XGBoost/CustomBuilder.rakumod (Algorithm::XGBoost::CustomBuilder) line 21
[Algorithm::XGBoost]   in block <unit> at -e line 1
===> Building [FAIL]: Algorithm::XGBoost:ver<0.0.6>:auth<zef:titsuki>