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gradle does have custom handling of URL, https://github.com/gradle/gradle/blob/master/subprojects/configuration-cache/src/main/kotlin/org/gradle/configurationcache/serialization/codecs/UrlCodec.kt

cc @Martin

maybe that only affects configuration cache and not normal task caching?

At a minimum, it's a known issue that you shouldn't use

java.net.URL

as a key in a hashmap because it does name resolution: https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/net/URL.html#equals(java.lang.Object) So use a

URI

instead.

yeah, and that's part of the reason behind the stupid

networkaddress.cache.ttl=-1

default on some JVMs - otherwise

URL

equality may change over time 😬

I don't think configuration cache is enabled there. I'll dig

I mean, maybe the code I linked only fixes URL serialization for configuration cache

The

URL

in question is nested in other objects, would that change anything?