leiningen 2022-07-08 | Slack Archive

apt20:07:30

Hi folks. When lein calculates the classpath, is there anything special about dev dependencies? To be more precise: I’d like to add a dev dependency to my project, but I don’t want its transitive dependencies to override the ones calculated by the main dependencies. That is, I’d like to transitive dependencies from dev to always have a slower priority, so the classpath used using dev time is as close as possible to the one used in prod.

vemv21:07:43

There's nothing special about dev (other than that it's being activated by default). However any given profile is more specific that the 'base' dependencies of a project map, which is why they're taking priority. I think the standard approach is to use :pedantic? so that conflicting transitive deps are reported as such. Sometimes :pedantic? in dev is very annoying, but it might be sound to run it in CI as a 'linter' of sorts.

apt21:07:38

Got it. For now, I’m just reasoning about the consequences of adding a dev dependency.

apt21:07:47

Actually, it would be added to a lein profile. I suppose the logic is the same, still.

👍 1

mikerod04:07:03

You can also directly declare a transitive dependency if you want to be sure a certain version is used in resolution

👍 1

apt20:07:55

After reading [1], I suppose there’s no special logic related to dev deps. They are concatenated to dependencies.

2022-07-08

Channels