Mea culpa, mea maxima culpa for waiting so long to implement something so simple. I needed access to a Mac to test it, but it is just released as 0.059:

mac01 $ perl -Mblib examples/sysinfo.pl
-- from methods
Distname             : mac01.local darwin - 17.0.0 (Mac OS X - macOS 1
+0.13 (17A365)) Mac mini (2 GHz) 1 [2 cores] x86_64
Hostname             : mac01.local
Number of CPU's      : 1 [2 cores]
Processor type       : x86_64
Processor description: Mac mini (2 GHz)
OS and version       : darwin - 17.0.0 (Mac OS X - macOS 10.13 (17A365
+))
-- from hash
cpu                  : Mac mini (2 GHz)
cpu_cores            : 2
cpu_count            : 1 [2 cores]
cpu_type             : x86_64
distro               : Darwin 10.13
hostname             : mac01.local
os                   : darwin - 17.0.0 (Mac OS X - macOS 10.13 (17A365
+))
osname               : Darwin
osvers               : 10.13
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