# dnf install rakudo-pkg-Fedora26-2017.11-01.x86_64.rpm
Last metadata expiration check: 2:45:45 ago on Tue 09 Jan 2018 07:40:22 PM PST.
Dependencies resolved.
==================================================================================================================================
 Package                        Arch                       Version                         Repository                        Size
==================================================================================================================================
Installing:
 rakudo-pkg                     x86_64                     2017.11-01                      @commandline                     8.9 M

Transaction Summary
==================================================================================================================================
Install  1 Package

Total size: 8.9 M
Installed size: 34 M
Is this ok [y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                                          1/1
  Installing       : rakudo-pkg-2017.11-01.x86_64                                                                             1/1
  Verifying        : rakudo-pkg-2017.11-01.x86_64                                                                             1/1

Installed:
  rakudo-pkg.x86_64 2017.11-01

Complete!



# zef --debug install DateTime::Format
===> Searching for: DateTime::Format
===> Found: DateTime::Format [via Zef::Repository::LocalCache]
===> Filtering: DateTime::Format
===> Filtering [OK] for DateTime::Format
===> # SKIP: No Build.pm for DateTime::Format
===> Testing: DateTime::Format
Testing with plugin: Zef::Service::Shell::Test+{<anon|56780016>}
===> Testing [FAIL]: DateTime::Format
Aborting due to test failure: DateTime::Format (use --force-test to override)
  in code  at /opt/rakudo-pkg/share/perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 375
  in method test at /opt/rakudo-pkg/share/perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 353
  in code  at /opt/rakudo-pkg/share/perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 530
  in sub  at /opt/rakudo-pkg/share/perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 527
  in method install at /opt/rakudo-pkg/share/perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 633
  in sub MAIN at /opt/rakudo-pkg/share/perl6/sources/C360CEB3AF792C33F65155FA82FDB7AB4467EC82 (Zef::CLI) line 152
  in block <unit> at /opt/rakudo-pkg/share/perl6/resources/1063D2A135456C8AB42D605E20DBCF9E4A1C9F3B line 1
  in sub MAIN at /usr/bin/zef line 2
  in block <unit> at /usr/bin/zef line 2