scotty VS yesod-minimal

I would suggest checking out scotty for the http server - it uses warp by default, and is very beginner-friendly.

Here's the current commit I'm working with: https://github.com/scotty-web/scotty/commit/3ed8586c046b46dc42740e8ac2e7fe712e84191d

If you're not a fan of the ruby-on-rails / swiss army knife approach that IHP takes, check out Scotty. Add Lucid for Html rendering, and Selda for Postgres. (There are other options for any of these tools if you prefer)

- Scotty (simple web routing) https://hackage.haskell.org/package/scotty

Writing a Haskell webserver (maybe using scotty) and call it from node.

I've been looking for this as well, and found the globalstate.hs example in the scotty github repository. It uses a ReaderT of a TVar and shows how to update or read shared state in memory.

I've found htmx and hyperscript talking to scotty to be an easy way to get something like this going while retaining the joys of Haskell on the backend and avoiding the pains of Haskell on the frontend.

Finally, to add my opinion in the context of some other posts: I'd suggest Scotty (and probably other libraries I'm less familiar with) before Servant in particular, as Servant is a lot to absorb if you're also trying to build fluency in Haskell at the same time. Similarly, I'd advocate for Elmish (disclaimer, it's written by (very talented programmers other than myself at) my company) over Halogen, at least based on the last time I tried Halogen--I found it pretty complex as well. Don't get me wrong, I think Servant and Halogen are both great, just...complex.

This is an example of REST API built with Scotty a web framework of Haskell and PostgreSQL a relational database. It's a simple API to manage products.

Not that I'm much of an expert, but if you're talking about a very barebones static single-page-app, then you could very easily get by just using blaze-html to put your elements on the page, and then scotty is a basic web framework you could use to serve up your app.

yesod is actually a very nice minimalistic library. The batteries are included but you don't have to put them in.

Disagree that DIY means you should do Spock (which has far more complicated type-level machinery) or scotty (which forces more of a Haskell understanding of things and loses a lot of type safety benefits). Building a minimal DIY experience with Yesod is rather pleasant - while the default experience with the templates is batteries-included, you're absolutely free to start from scratch and have a minimal site which still has good type safety and smart defaults for a lot of web stuff.