Phoedown is Pharo Smalltalk FFI to hoedown.
In Pharo:
Metacello new
baseline: 'Phoedown';
repository: 'github://PierceNg/Phoedown/src';
load.
The Pharo VM needs to be able to locate the hoedown .so/dylib file.
HdHtmlRenderer new
render: '# Hello from Phoedown'
See my blog entry for usage example. Github's Markdown processor isn't able to handle that blog post's example within this README.