Use sbt-github-actions.

.github/workflows/ci.yml

@@ -1,41 +1,74 @@
-name: scala-ts
+# This file was automatically generated by sbt-github-actions using the
+# githubWorkflowGenerate task. You should add and commit this file to
+# your git repository. It goes without saying that you shouldn't edit
+# this file by hand! Instead, if you wish to make changes, you should
+# change your sbt build configuration to revise the workflow description
+# to meet your needs, then regenerate this file.
+
+name: Continuous Integration
+
 on:
-  push:
-    branches:
-      - master
   pull_request:
-    branches:
-      - master
+    branches: [master]
+  push:
+    branches: [master]
+
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
 jobs:
-  test:
-    runs-on: ubuntu-latest
+  build:
+    name: Build and Test
     strategy:
       fail-fast: false
       matrix:
+        os: [ubuntu-latest]
         scala: [3.3.1]
-        java: [8, 11, 17]
+        java: [temurin@8, temurin@11, temurin@17, temurin@21]
+    runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout current branch (full)
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
-      - name: Setup Java ${{ matrix.java }}
-        uses: actions/setup-java@v2
+      - name: Setup Java (temurin@8)
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: ${{ matrix.java }}
+          java-version: 8
+          cache: sbt
 
-      - name: Cache sbt
-        uses: actions/cache@v2
+      - name: Setup Java (temurin@11)
+        if: matrix.java == 'temurin@11'
+        uses: actions/setup-java@v4
         with:
-          path: |
-            ~/.sbt
-            ~/.ivy2/cache
-            ~/.coursier/cache/v1
-            ~/.cache/coursier/v1
-          key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
+          distribution: temurin
+          java-version: 11
+          cache: sbt
+
+      - name: Setup Java (temurin@17)
+        if: matrix.java == 'temurin@17'
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 17
+          cache: sbt
+
+      - name: Setup Java (temurin@21)
+        if: matrix.java == 'temurin@21'
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+          cache: sbt
+
+      - name: Check that workflows are up to date
+        run: sbt '++ ${{ matrix.scala }}' githubWorkflowCheck
 
       - name: yarn install
-        if: matrix.scala == '3.3.1'
         run: cd tests && yarn && cd ..
 
-      - name: sbt test
-        run: sbt ++${{ matrix.scala }} test
+      - name: test
+        run: sbt '++ ${{ matrix.scala }}' test

.github/workflows/clean.yml

@@ -0,0 +1,60 @@
+# This file was automatically generated by sbt-github-actions using the
+# githubWorkflowGenerate task. You should add and commit this file to
+# your git repository. It goes without saying that you shouldn't edit
+# this file by hand! Instead, if you wish to make changes, you should
+# change your sbt build configuration to revise the workflow description
+# to meet your needs, then regenerate this file.
+
+name: Clean
+
+on: push
+
+jobs:
+  delete-artifacts:
+    name: Delete Artifacts
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Delete artifacts
+        shell: bash {0}
+        run: |
+          # Customize those three lines with your repository and credentials:
+          REPO=${GITHUB_API_URL}/repos/${{ github.repository }}
+
+          # A shortcut to call GitHub API.
+          ghapi() { curl --silent --location --user _:$GITHUB_TOKEN "$@"; }
+
+          # A temporary file which receives HTTP response headers.
+          TMPFILE=$(mktemp)
+
+          # An associative array, key: artifact name, value: number of artifacts of that name.
+          declare -A ARTCOUNT
+
+          # Process all artifacts on this repository, loop on returned "pages".
+          URL=$REPO/actions/artifacts
+          while [[ -n "$URL" ]]; do
+
+            # Get current page, get response headers in a temporary file.
+            JSON=$(ghapi --dump-header $TMPFILE "$URL")
+
+            # Get URL of next page. Will be empty if we are at the last page.
+            URL=$(grep '^Link:' "$TMPFILE" | tr ',' '\n' | grep 'rel="next"' | head -1 | sed -e 's/.*<//' -e 's/>.*//')
+            rm -f $TMPFILE
+
+            # Number of artifacts on this page:
+            COUNT=$(( $(jq <<<$JSON -r '.artifacts | length') ))
+
+            # Loop on all artifacts on this page.
+            for ((i=0; $i < $COUNT; i++)); do
+
+              # Get name of artifact and count instances of this name.
+              name=$(jq <<<$JSON -r ".artifacts[$i].name?")
+              ARTCOUNT[$name]=$(( $(( ${ARTCOUNT[$name]} )) + 1))
+
+              id=$(jq <<<$JSON -r ".artifacts[$i].id?")
+              size=$(( $(jq <<<$JSON -r ".artifacts[$i].size_in_bytes?") ))
+              printf "Deleting '%s' #%d, %'d bytes\n" $name ${ARTCOUNT[$name]} $size
+              ghapi -X DELETE $REPO/actions/artifacts/$id
+            done
+          done

build.sbt

@@ -1,5 +1,25 @@
 Global / onChangedBuildSource := ReloadOnSourceChanges
 
+val scalaV = "3.3.1"
+
+ThisBuild / scalaVersion := scalaV
+ThisBuild / crossScalaVersions := Seq(scalaV)
+
+// GitHub Actions config
+val javaVersions = Seq(8, 11, 17, 21).map(v => JavaSpec.temurin(v.toString))
+
+ThisBuild / githubWorkflowJavaVersions := javaVersions
+ThisBuild / githubWorkflowArtifactUpload := false
+ThisBuild / githubWorkflowBuildMatrixFailFast := Some(false)
+ThisBuild / githubWorkflowTargetBranches := Seq("master")
+
+ThisBuild / githubWorkflowBuild := Seq(
+  WorkflowStep.Run(List("cd tests && yarn && cd .."), name = Some("yarn install")),
+  WorkflowStep.Sbt(List("test"), name = Some("test")),
+)
+
+ThisBuild / githubWorkflowPublishTargetBranches := Seq()
+
 lazy val cats = "org.typelevel" %% "cats-core" % "2.10.0"
 def circe(proj: String) = "io.circe" %% s"circe-$proj" % "0.14.6"
 lazy val joda = "joda-time" % "joda-time" % "2.12.7"

project/plugins.sbt

@@ -1,4 +1,5 @@
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.11.0")
+addSbtPlugin("com.github.sbt" % "sbt-github-actions" % "0.23.0")
 addSbtPlugin("org.typelevel" % "sbt-tpolecat" % "0.5.0")
 
 resolvers += "bondlink-maven-repo" at "https://raw.githubusercontent.com/mblink/maven-repo/main"