writerHTMLMathMethod not getting applied whatsoever

[mactonya]

Trying to use hakyll to do math blog, but for whatever reason when I am trying to convert the maths, the config { writerHTMLMathMethod = KaTeX "" } just refuses to work, so it turns something simple like a^2+b^2=c^2 to <em>a</em><sup>2</sup> + <em>b</em><sup>2</sup> = <em>c</em><sup>2</sup></span>

    match "posts/*" $ do
        let writerOptions = defaultHakyllWriterOptions
                            { writerHTMLMathMethod = KaTeX "" }
        route $ setExtension "html"
        compile $ pandocCompilerWith defaultHakyllReaderOptions writerOptions
            >>= loadAndApplyTemplate "templates/post.html"    postCtx
            >>= loadAndApplyTemplate "templates/default.html" postCtx
            >>= relativizeUrls

local pandoc can apply the flags normally; any possible idea on why this could happen?

[chungyc]

It didn't work for me either. With some random fiddling, though, I managed to use KaTeX by using the MathJax as the writerHTMLMathMethod and including the necessary Javascript.

For an example with my own Hakyll site:

• https://github.com/chungyc/site-personal/blob/d21614fad2610481e859f0de66773e865aea085b/src/Web/Site/Compilers.hs#L104
• https://github.com/chungyc/site-personal/blob/d21614fad2610481e859f0de66773e865aea085b/site/templates/default.html#L37

[mactonya]

Seems like MathJax is the way to go.

[Minoru]

I didn't test this, but I think one needs to pass a URL for KaTeX, or use a default one from Text.Pandoc.Options:

defaultHakyllWriterOptions { writerHTMLMathMethod = KaTeX defaultKaTeXURL }

Apparently that's what pandoc --katex does, too:

       --katex[=URL]
              Use KaTeX to display embedded TeX math in HTML output.  The URL is the base URL for the KaTeX library.  That directory should contain a katex.min.js and a katex.min.css file.  If a URL  is  not provided, a link to the KaTeX CDN will be inserted.