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2020-10-31
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- # architecture (1)
- # asami (25)
- # babashka (1)
- # beginners (1)
- # calva (23)
- # clj-kondo (54)
- # cljfx (23)
- # cljsrn (9)
- # clojure (72)
- # clojure-europe (2)
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I'm considering automatically running clj-kondo --parallel --lint
in the background on JVM startup. Any reason not to?
@borkdude seems like a non-issue, given that it's only on the rare reboot of the JVM. Does clj-kondo cache at all for that operation?
oh you mean like if you call --parallel --lint
next time, it will skip the jars? no it doesn't have logic for that
Ah. I'll start with naïve approach, and assume clj-kondo will either fix it later, or I can just cache against the .cpcache :)
It's possible to build this logic inside clj-kondo, but then we've got a cache for the cache, which may introduce ... issues?
Hmm, that depends I guess? :) I wouldn't describe this as a cache, the existing thing is more of a "lint history" or "lint record"
Hypothetically, clj-kondo could be taught how to resolve namespaces by itself and then it could check the "database" OR just resolve it as a fallback. Hypothetically ofc, there's a bunch of thinking that would need to go into that.
I think using the cpcache for this might be a nice idea btw, post it in the issue :)
Am I safe-ish to create files in .clj-kondo/cache? If so, I'll use the cpcache as my approach.
https://clojure.org/guides/dev_startup_time automating this process
the cache is also keyed on .clj-kondo version btw, so updates to clj-kondo would invalidate it
Btw, if any other tricks like this come to mind that a project could experiment with, let me know. I'm working on a place for hacks like this to be tested in a way that wouldn't require long-term commitments on your part.
❯ time clj-kondo --parallel --lint /home/overfl0w/.m2/repository/refactor-nrepl/refactor-nrepl/2.5.0/refactor-nrepl-2.5.0.jar
<snip>
clj-kondo --parallel --lint 4.77s user 0.35s system 99% cpu 5.163 total
❯ time clj-kondo --parallel --lint /home/overfl0w/.m2/repository/cider/cider-nrepl/0.25.3/cider-nrepl-0.25.3.jar
clj-kondo --parallel --lint 7.82s user 0.38s system 99% cpu 8.272 total
That's... impressively slow :pI suspect that's mostly my machine being old, but also the size of these two jars is probably disproportionate. They contain embedded tools reader copies, etc.
clj-kondo doesn't use any of this, it just re-lints every time you feed it something