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Merged
rossabaker merged 2 commits into from
Sep 8, 2026
Merged

Drop Java 8 and 11 in Scala 3 #301

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8edb274
Drop Java 8 and 11 in Scala 3
rossabaker Sep 8, 2026
c94ed21
Come on, come on, come on, let's go space truckin'
rossabaker Sep 8, 2026
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132 changes: 68 additions & 64 deletions .github/workflows/ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -30,16 +30,20 @@ jobs:
matrix:
os: [ubuntu-22.04]
scala: [2.12, 2.13, 3]
java: [temurin@8, temurin@11, temurin@17]
java: [temurin@17, temurin@8, temurin@11]
exclude:
- scala: 2.12
java: temurin@11
java: temurin@8
- scala: 2.12
java: temurin@17
java: temurin@11
- scala: 3
java: temurin@8
- scala: 3
java: temurin@11
- scala: 3
java: temurin@17
java: temurin@8
- scala: 3
java: temurin@11
runs-on: ${{ matrix.os }}
timeout-minutes: 60
steps:
Expand All @@ -51,6 +55,19 @@ jobs:
- name: Setup sbt
uses: sbt/setup-sbt@v1

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@8)
id: setup-java-temurin-8
if: matrix.java == 'temurin@8'
Expand All @@ -77,43 +94,30 @@ jobs:
if: matrix.java == 'temurin@11' && steps.setup-java-temurin-11.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Check that workflows are up to date
run: sbt githubWorkflowCheck

- name: Check headers and formatting
if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-22.04'
if: matrix.java == 'temurin@17' && matrix.os == 'ubuntu-22.04'
run: sbt '++ ${{ matrix.scala }}' headerCheckAll scalafmtCheckAll 'project /' scalafmtSbtCheck

- name: Test
run: sbt '++ ${{ matrix.scala }}' test

- name: Check binary compatibility
if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-22.04'
if: matrix.java == 'temurin@17' && matrix.os == 'ubuntu-22.04'
run: sbt '++ ${{ matrix.scala }}' mimaReportBinaryIssues

- name: Generate API documentation
if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-22.04'
if: matrix.java == 'temurin@17' && matrix.os == 'ubuntu-22.04'
run: sbt '++ ${{ matrix.scala }}' doc

- name: Check scalafix lints
if: matrix.java == 'temurin@8' && !startsWith(matrix.scala, '3')
if: matrix.java == 'temurin@17' && !startsWith(matrix.scala, '3')
run: sbt '++ ${{ matrix.scala }}' 'scalafixAll --check'

- name: Check unused compile dependencies
if: matrix.java == 'temurin@8'
if: matrix.java == 'temurin@17'
run: sbt '++ ${{ matrix.scala }}' unusedCompileDependenciesTest

- name: Make target directories
Expand All @@ -138,7 +142,7 @@ jobs:
strategy:
matrix:
os: [ubuntu-22.04]
java: [temurin@8]
java: [temurin@17]
runs-on: ${{ matrix.os }}
steps:
- name: Checkout current branch (full)
Expand All @@ -149,6 +153,19 @@ jobs:
- name: Setup sbt
uses: sbt/setup-sbt@v1

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@8)
id: setup-java-temurin-8
if: matrix.java == 'temurin@8'
Expand All @@ -175,19 +192,6 @@ jobs:
if: matrix.java == 'temurin@11' && steps.setup-java-temurin-11.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Download target directories (2.12)
uses: actions/download-artifact@v6
with:
Expand Down Expand Up @@ -248,7 +252,7 @@ jobs:
strategy:
matrix:
os: [ubuntu-22.04]
java: [temurin@8]
java: [temurin@17]
runs-on: ${{ matrix.os }}
steps:
- name: Checkout current branch (full)
Expand All @@ -259,6 +263,19 @@ jobs:
- name: Setup sbt
uses: sbt/setup-sbt@v1

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@8)
id: setup-java-temurin-8
if: matrix.java == 'temurin@8'
Expand All @@ -285,19 +302,6 @@ jobs:
if: matrix.java == 'temurin@11' && steps.setup-java-temurin-11.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Submit Dependencies
uses: scalacenter/sbt-dependency-submission@v2
with:
Expand Down Expand Up @@ -334,7 +338,7 @@ jobs:
strategy:
matrix:
os: [ubuntu-22.04]
java: [temurin@11]
java: [temurin@17]
runs-on: ${{ matrix.os }}
steps:
- name: Checkout current branch (full)
Expand All @@ -345,6 +349,19 @@ jobs:
- name: Setup sbt
uses: sbt/setup-sbt@v1

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@8)
id: setup-java-temurin-8
if: matrix.java == 'temurin@8'
Expand All @@ -371,19 +388,6 @@ jobs:
if: matrix.java == 'temurin@11' && steps.setup-java-temurin-11.outputs.cache-hit == 'false'
run: sbt +update

- name: Setup Java (temurin@17)
id: setup-java-temurin-17
if: matrix.java == 'temurin@17'
uses: actions/setup-java@v5
with:
distribution: temurin
java-version: 17
cache: sbt

- name: sbt update
if: matrix.java == 'temurin@17' && steps.setup-java-temurin-17.outputs.cache-hit == 'false'
run: sbt +update

- name: Generate site
run: sbt docs/tlSite

Expand Down
25 changes: 25 additions & 0 deletions build.sbt
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,31 @@ val Scala213 = "2.13.18"
ThisBuild / crossScalaVersions := Seq(Scala212, Scala213, "3.3.8")
ThisBuild / scalaVersion := Scala213

// Scala 3 requires Java 17 now, but Scala 2 still supports Java 8.
// Buckle up.
ThisBuild / githubWorkflowJavaVersions :=
Seq(JavaSpec.temurin("17"), JavaSpec.temurin("8"), JavaSpec.temurin("11"))
ThisBuild / githubWorkflowBuildMatrixExclusions ++= {
for {
scala <- (ThisBuild / githubWorkflowScalaVersions).value
java <- (ThisBuild / githubWorkflowJavaVersions).value
if scala.startsWith("3") && java != JavaSpec.temurin("17")
} yield MatrixExclude(Map("scala" -> scala, "java" -> java.render))
}
ThisBuild / tlJdkRelease := None
ThisBuild / scalacOptions ++= {
CrossVersion.partialVersion(scalaVersion.value) match {
case Some((3, _)) => Seq("-release", "17")
case _ => Seq("-release", "8")
}
}
ThisBuild / javacOptions ++= {
CrossVersion.partialVersion(scalaVersion.value) match {
case Some((3, _)) => Seq("--release", "17")
case _ => Seq("--release", "8")
}
}

lazy val root = project.in(file(".")).aggregate(scalaXml).enablePlugins(NoPublishPlugin)

val http4sVersion = "0.23.37"
Expand Down
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