Scala 3.8 nightlies regressions tracker #23958
Description
The tracker issue for remaining Scala 3.8-nightlies regressions introduced (or discovered) since 3.7.3
The goal of this issue is to provide reproductions and minimisation for failing projects found in the OpenCB
For build logs see https://virtuslab.github.io/community-build3/2025/09/13/3.8.0-rc1-bin-20250912-c4c48e3-nightly.html
For instructions how to reproduce / build locally see: https://gist.github.com/WojciechMazur/3f5691e064f96b28fc1d465c5782a92a
Help wanted with minimisation of issues
scaladoc - Java annotated class (all Scala versions)
- disneystreaming/weaver-test From tasty compilation fails when referencing methods missing from the JDK #16709 (comment)
cannot reduce summonFrom with
- funktionalio/pillars - False positive unused given for circe / iron combination #24034
- gvolpe/trading - False positive unused given for circe / iron combination #24034
typer (miscellaneous problems)
- getkyo/kyo Typer regressions in
getkyo/kyo#24097 - typelevel/fs2 Typer regression in
typelevel/fs2#24096 - zio/zio-schema Regression in
zio/zio-schemafor typer/implicit resolution #24007 - kasiamarek/tyre-scala Typer regression for path dependent types in
kasiamarek/tyre-scala#24094 - paoloboni/binance-scala-client Typer regression for sum type derivation in
paoloboni/binance-scala-client#24093 - pityka/relational3 - Regression in
pityka/relational3for transparent inline with match types #24038 - scala/scala-parallel-collections (fix: update parent type of
ParSeqLikescala-parallel-collections#308) -
taig/geojson- no longer reproducible
orphan parameter reference: TermParamRef(t)
- guntiso/mojoz Crash during pickler phase in
guntiso/mojoz#24100
is not a lergal path since it is not a concreate type
- trace4cats/trace4cats-opentelemetry Regression for copy method referring to lazy vals and Scala collections #24101
- hagay3/skuber
- thoughtworksinc/dsl.scala
- leanovate/play-mockws
macros changed behaviour
- kacperfkorban/guinep Incorrect
does not take parameterserror when using quotes reflection #23969 - kitlangton/neotype Regression: inferred types with @retains cause previous macro implementations to crash #24006
unresolved symbols when pickling
- natural-transformation/korolev
- sangria-graphql/sangria - Regression in
sangria-graphql/sangriafor constructing case class instance #24102
Infix syntax: value compose is not a member of () => S => cats.Id[S]
- sagifogel/proptics - Incorrect rewrite for composed method results in non compiling code #24103
- scalatest/scalatest ## similar not the same
Not found: typeCheckErrors
- kevin-lee/refined4s Wunused: False positive for compiletime.testing.typeCheckErrors #23967
Conflciting definitions / erasure
- swaldman/conveniences Union type triggers conflictings definitions after erasure but normal generic argument does not #23882
Reported
Implicit resolution under -Yexplcit-nulls
- broij/zarrow
-Yexplicit-nullsbreaks givens resolution when depending on libraries without this flag #23935 - com-lihaoyi/mill-moduledefs
-Yexplicit-nullsbreaks obtainingquoted.Type#23937
MatchError FlexibleType
- bishabosha/enhanced-string-interpolator
-Yexplicit-nullsbreaks enums #23933 - earogov/ordset
-Yexplicit-nullsbreaks anonymous sealed class implementations #23936 - evolution-gaming/derivation
- facsimile/facsimile
- guidoschmidt17/zio-pgcopy
- kuceramartin/tyqu
- scalacenter/tasty-mima
- scalacenter/tasty-query
- shuwariafrica/doobie-util
- shuwariafrica/version
- tabdulradi/happypath
- tabdulradi/nullable
- tofu-tf/cherry
- zero-deps/proto
- marcinzh/turbolift
- stg-tud/bismuth
assertion: should not flexily HKLambda
- fehu/opentracing-scala
-Yexplicit-nullsfailing assertion for flexify HKTypeLambda #23939 / Crash with FlexibleTypes when nullifying classes with Higher-kinded Type Parameters #23908 - japgolly/univeq