Redirects within hakyll

hakyll-redirects.hs

match "redirects.txt" $ do
   route $ constRoute ".htaccess"
   compile $ makeItem "" >>=
       loadAndApplyTemplate "templates-htaccess" myCtx
 where
   myCtx = metadataField `mappend`
           defaultContext

redirects.txt

---
redirects:
   - old: "/my/old/path.html"
     new: "/my/new/path.html"
   - old: "/my/other/old/path.html"
     new: "/my/new/other/path.html"
---

templates-htaccess

$for(redirects)$
Redirect 301 $old$ $siteRoot$$new$
$endfor$