sounds more like a deps.edn question than shadow-cljs question

when you set :lein true or :deps true in shadow cljs config, basically everything about dependency management is handed off to lein or deps.edn. so overriding dependencies depends on (1) the library youre pulling in, and (2) how you would override that with your tool

with deps.edn, I can pass multiple files, so that's how I'd solve that. I don't think shadow offers that option, hence the question

do you have a minimum example project and does it work with other tools that can use deps.edn?

i dont really know how to use deps.edn, but with leiningen you can use either :exclusions or :managed-dependencies to replace dependencies with exact versions specified in your project. I’m assuming deps.edn offers a similar key for these things, so I’m not sure why multiple files are needed to achieve what you want

According to https://clojure.org/reference/deps_and_cli, it looks like :override-deps should work for what you want?

I'd like to generate overrides without having to update the base deps.edn. With plain deps, I can do it with clj -Sdeps '{ ... }'

have you tried doing that and invoke shadow-cljs manually

the user guide has an example of running shadow cljs manually with clj

in your case it looks like clj -Sdeps ... -m shadow.cljs.devtools.cli watch build would work

I'll use that as a last resort, if shadow doesn't have another solution, thanks!