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The move to Scala3 requires a very serious rewrite, as Scala 3 has dropped projection types.
I started a conversation [on the lampepfl github discussion space](https://github.com/lampepfl/dotty/discu…
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## Compiler version
3.4.1
## Minimized code
```Scala
sealed trait T_A[A]
case class CC_B[A](a: T_A[A], c: T_A[A]) extends T_A[Char]
case class CC_C[A]() extends T_A[A]
case class CC_G() e…
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I really like what this library offers, but I'm wondering if it's going to be possible to implement any of the behaviors at all for scala 3, given the restrictions on macros.
Are there plans or a r…
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## Compiler version
```
# scala -version
Scala code runner version 3.4.0-RC1 -- Copyright 2002-2023, LAMP/EPFL
```
```
# java -version
openjdk version "19" 2022-09-20
OpenJDK Runtime Environ…
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**Version(s)**
Scala CLI version: 1.1.2
Scala version (default): 3.3.1
**Describe the bug**
Dependencies fetched from the registry declared using
```
//> using repository https://maven.pkg.gi…
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but it is excluded by the includeScala=false directive as its file name starts with "scala-".
Unfortunately once excluded there appears to be no way to override the exclusion. So the logic that de…
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We found that this library does not work with the current Scala 2 library TASTy
* See error in: https://github.com/scala/scala3/pull/19588#issuecomment-1925463405
* See what is the Scala 2 librar…
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The generated code will now cause the Scala 3.4.x compiler to emit the warning:
```shell
[warn] 36 | private[this] def argEscape(k: String, v: String): String = Query.apply((k, Some(v))).toString…
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When type hierarchy is introduced: https://docs.scala-lang.org/scala3/book/first-look-at-types.html
it is said that
> …it means that we cannot pattern match on values of type `Any`, but only on…
Sciss updated
3 years ago
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### Are you looking for help?
This is an issue tracker, used to manage and track the development of Play JSON. It is not a support system and so it is not a place to ask questions or get help. If y…