You are looking for define-clojure-indent

Is that possible to generate dynamically? I'd need to enumerate every Rum component, no?

Dynamically from what source?

It just feels weird to me reading Rum code and seeing the base-hiccup and higher level rum components indented differently. Maybe I just need to get over it, but I'm used to reading just hiccup with Reagent and everything there is indented identically

No, I agree with you. I certainly prefer the hiccup indentation (and syntax, but that's a different matter).

Seeing code formatted like this

(rum-component {:class ["foo"]}
                   [:div.flex.bg-base-100.gap-2.m-4.items-center
                    [:input.w-12.input.input-xs.input-primary]])

(rum-component {:class ["foo"]}
      [:div.flex.bg-base-100.gap-2.m-4.items-center
       [:input.w-12.input.input-xs.input-primary]])

But in lieu of enumerating the components, where would clojure-mode find the symbols to indent differently?

You could have emacs read the rum source code and populate it that way, perhaps?

I'm not sure, I wanted to ask before digging in too deep with my limited expertise.

Would it be possible to have Rum attach metadata to the functions to indent them differently?

clojure-mode indentation is not dependent on a repl

Hmm. I guess I can just always put props on a newline. Then the indentation seems right to me.

That is certainly a pragmatic solution.

that's what we do with #helix components

we have a style preference for props going on a newline when a child is passed in

CIDER has a variable cider-clojure-cli-aliases. I often see this set in a .dir-locals.el file

https://docs.cider.mx/cider/basics/up_and_running.html#clojure-cli-options

Where do you put .dir-locals.el? In project folder?

Yeah. Project root makes a lot of sense

Some example of using .dir-locals.el https://practical.li/spacemacs/clojure-projects/project-configuration.html Emacs will need to be forced to load .dir-locals.el if that file is added after a Clojure/Edn file is opened, using revert-buffer command (or reopen the Clojure/Edn file) before running the REPL command from that buffer Alternatively, usie the universal argument, C-u before calling cider-jack-in to get an editable command in the mini buffer

I think Cider now also defaults the dev alias, so if you setup a :dev alias in your deps.edn, you can specify dev specific extras and jack-in should have them

I hope there is a Cider variable to disable the automatic loading of the dev alias I prefer to be explicit in the aliases I want loaded when running the REPL and may not want :dev always loaded, especially if I have broken something in dev/user.clj as that could stop the repl process starting.

Oh, nevermind, I was wrong haha, forgot that I had added this to my config: (setq cider-clojure-cli-aliases ":dev")

Thanks for letting me know

enrich-classpath is disabled by default these days, make sure you're using CIDER latest stable