When comparing Assemble vs Hakyll, the Slant community recommends Hakyll for most people. In the question“What are the best static site generators?” Hakyll is ranked 14th while Assemble is ranked 15th. The most important reason people chose Hakyll is:
Simple format with LaTeX and syntax highlighting support.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro No dependencies on Ruby, Python... just JavaScript
Pro Built on node.js
Pro Powered by a popular template engine Handlebars
Handlebars is the default template engine for Assemble, but you can add any template any you want.
Pro Highly customizable
Pro Markdown support
Pro Highly extensible
Assemble can be extended with plugins/middleware, helpers and mixins.
Pro Nested layout support
Assemble makes it easy to work with layouts. Layouts are used to "wrap" pages with common page elements, such as a header, footer etc. You can even nest layouts!
Pro Use mainstream build tools Grunt or Gulp
Pro Pandoc Markdown
Simple format with LaTeX and syntax highlighting support.
Pro Haskell
Written in Haskell
Cons
Con Documentation can be hard to navigate
Especially for someone new to Assemble, it can be difficult to find what you're looking for in the documentation.