Scala3/kernel+core (#1192)

* Prepare Scala 3 cross-compilation

* Dispatch traits preparation.

* WIP: prepared kernel to scala3.

* Working on coreCE2.

* Updated scalafmt

* Kernel macros finally done.

* CE2 main code prepared for scala3.

* Adopted coreCE2 module and added macro with argument application.

* Added implicit arguments apply.

* WIP: most of macros prepared, working on problem with path dependent types.

* Solved path dependent type problem with asInstanceOf on macro site.

* Finally coreCE2 migration done!!!

* coreCE3 adopt.

* Migrate ZIO2 interop to Scala 3.

* Collect garbage.

* Uncomment early failed test.

* FIxed unused imports.

* Fixed compat.unused.

* Scala fmt tuning and applying..

* Fixed kernel test.

* Setup tpolecat plugin, fix warnings.

* Fix fmt.

* Revert scalafix cfg.

* Fixed typo bug.

* Silenced scala3-migration warnings.

* Fixed cross compile warnings.

* Reverted zio2 logging and fixed build settings.

* Fixed warnings.

* Refactored build.sbt for future.

* Trying to fix mystery bug.

* instanceOf for the instance of God

* fix

* Logback & slf4j version bump.

* Revert cast logger fix error attempt.

* Disable zio2 logging test.

* Disable warnings as fatal errors on docs/mdoc.

* Refactored fatal warnings options.

* Slight Interop refactoring.

* widen, not instance of

* sbt version bump

* ci updated.

* Added sbt-projectmatrix plugin.

* Setup project matrix builds and ci.

* Fixed -Ykind-projector set repeatedly.

* One more warnings fix.

* scala3: fix Do monad inc compilation issues

* Added RepresentableK instances with hand implementation without macros.

* Enable docs generation.

---------

Co-authored-by: dosofredriver <dosofredriver@gmail.com>
Co-authored-by: Vadim Chelyshov <qtankle@gmail.com>
Co-authored-by: Vladislav Ugryumov <wffvlad@yandex.ru>
Co-authored-by: road21 <amtroitskiy@gmail.com>

.github/mergify.yml

@@ -24,6 +24,8 @@ pull_request_rules:
           - check-success~=Test \(2\.12\.x, 17\)
           - check-success~=Test \(2\.13\.x, 8\)
           - check-success~=Test \(2\.13\.x, 17\)
+          - check-success~=Test \(3\.3\.x, 8\)
+          - check-success~=Test \(3\.3\.x, 17\)
     actions:
       merge:
         method: rebase

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     name: Build and Test
     strategy:
       matrix:
-        scala: [2.13.x, 2.12.x]
+        scala: [2.13, 2.12, 3.3]
         java: [8, 17]
     runs-on: ubuntu-latest
     steps:
@@ -33,10 +33,10 @@ jobs:
         run: sbt scalafmtCheckAll scalafmtSbtCheck
 
       - name: Build project
-        run: sbt ++${{ matrix.scala }} test
+        run: sbt "testScoped ${{ matrix.scala }} JVM"
 
       - name: Generate docs
-        if: matrix.scala == '2.13.x'
+        if: matrix.scala == '2.13'
         run: sbt ++${{ matrix.scala }} docs/mdoc
 
   publish:
@@ -63,4 +63,4 @@ jobs:
           PGP_SECRET: ${{ secrets.PGP_SECRET }}
           SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
           SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
-        run: sbt ++2.13.x ci-release
+        run: sbt +ci-release

.scalafix.conf

@@ -2,4 +2,4 @@ OrganizeImports {
   removeUnused = true
   groups = ["re:javax?\\.", "scala.", "tofu." "*"]
   groupedImports = AggressiveMerge
-}
+}

.scalafmt.conf

@@ -4,7 +4,15 @@ maxColumn = 120
 includeCurlyBraceInSelectChains = false
 align.preset = most
 version = "3.7.11"
-runner.dialect = scala213
+runner.dialect = scala213source3
 trailingCommas = preserve
 newlines.penalizeSingleSelectMultiArgList = false
 newlines.alwaysBeforeMultilineDef = false
+fileOverride {
+  "glob:**/scala-2.12/**.scala" {
+     runner.dialect = scala212source3
+  }
+  "glob:**/scala-3/**.scala" {
+     runner.dialect = scala3
+  }
+}