Experimental code for interpreting IkiWiki-format wiki-links and directives in a Hakyll site.
I'm exploring whether/how easily I could migrate from
IkiWiki to Hakyll. I'm
keen to continue to use the IkiWiki link syntax ([[example]]), as well as
some of the features that are obtained via plugins via directives ([[!example label=value]]), and IkiWiki's link-resolving logic.
The wikilink-and-directive finding is implemented as a Parsec parser, that should run prior to the content being passed to Pandoc. This can't easily be achieved with a Pandoc filter (operating on the Pandoc AST) because the tokens we want might be split up across any kind of different text nodes. The approach we use is to substitute, where possible, the link syntax with a HTML link. Pandoc then later will interpret the result. This means that thing will only work if the underlying markup language supports in-line HTML. Markdown does, Textile does, HTML obviously does, restructuredText does not.
I've begun implementing logic for some IkiWiki plugins in the Directive handling. Presently they can generate plain text or updated Metadata. I still need to figure out how to plumb the collated Metadata back into Hakyll.
I want to support IkiWiki's [[!template]], where possible, and plan to see if
translating them into Hakyll's template tokens (e.g.
$partial("filename.html")$) as inline text works or not.
The site.hs is a simple example Hakyll program, derived from the basic template
that hakyll-init generates for you. I've trimmed it a little bit and integrated
IkiWiki.hs into it. The content in css and images is unchanged; posts has
blog posts that demonstrate IkiWiki-style interlinks and directives in use.
hakyll-ikiwiki.cabal and stack.yaml are (for now) specific to this
demonstration. You can use either Haskell Stack
or Cabal to build the demo site.