feat(github actions): adding in configuration so builds happen throug…

…h github actions instead of travis. scala#50.

.github/workflows/ci.yml

@@ -0,0 +1,59 @@
+# 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:
+  pull_request:
+    branches: ['*']
+  push:
+    branches: ['*']
+
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  build:
+    name: Build and Test
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        scala:
+          - 3.0.0-RC1
+          - 3.0.0-RC2-bin-20210325-eeb8340-NIGHTLY
+        java: [adopt@1.8, adopt@11, adopt@16]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout current branch (full)
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Java and Scala
+        uses: olafurpg/setup-scala@v10
+        with:
+          java-version: ${{ matrix.java }}
+
+      - name: Cache sbt
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.sbt
+            ~/.ivy2/cache
+            ~/.coursier/cache/v1
+            ~/.cache/coursier/v1
+            ~/AppData/Local/Coursier/Cache/v1
+            ~/Library/Caches/Coursier/v1
+          key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
+
+      - run: sbt ++${{ matrix.scala }} run
+
+      - name: Check that workflows are up to date
+        run: sbt ++${{ matrix.scala }} githubWorkflowCheck
+
+      - name: Build project
+        run: sbt ++${{ matrix.scala }} test

.github/workflows/clean.yml

@@ -0,0 +1,59 @@
+# 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: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Delete artifacts
+        run: |
+          # Customize those three lines with your repository and credentials:
+          REPO=${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=/tmp/tmp.$$
+
+          # 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

README.md

@@ -1,6 +1,6 @@
 # Example sbt project that compiles using Scala 3
 
-[![Build Status](https://travis-ci.com/scala/scala3-example-project.svg?branch=master)](https://travis-ci.com/scala/scala3-example-project)
+[![Build Status](https://github.com/scala/scala3-example-project/workflows/CI/badge.svg?branch=master)](https://github.com/scala/scala3-example-project/workflows)
 
 ## Usage
 

build.sbt

@@ -1,11 +1,19 @@
+lazy val rcVersion = "3.0.0-RC1"
+lazy val crossVersions = Seq(Option(rcVersion), dottyLatestNightlyBuild()).flatten
 lazy val root = project
   .in(file("."))
   .settings(
     name := "scala3-example-project",
     description := "Example sbt project that compiles using Scala 3",
     version := "0.1.0",
-
-    scalaVersion := "3.0.0-RC1",
-
+    scalaVersion := rcVersion,
+    crossScalaVersions := crossVersions,
     useScala3doc := true,
+    skip in publish := true
   )
+
+ThisBuild / githubWorkflowJavaVersions := Seq("adopt@1.8", "adopt@11", "adopt@16")
+ThisBuild / githubWorkflowScalaVersions := crossVersions
+ThisBuild / githubWorkflowBuildPreamble ++= Seq(WorkflowStep.Sbt(List("run")))
+ThisBuild / githubWorkflowPublishTargetBranches := Nil
+Global / onChangedBuildSource := ReloadOnSourceChanges

project/plugins.sbt

@@ -1 +1,3 @@
 addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.5.3")
+addSbtPlugin("com.codecommit" % "sbt-github-actions" % "0.10.1")
+