Add mill-mima to check binary compatibility (com-lihaoyi#255)

* Add mill-mima to check binary compatibility

* Update Mill to 0.9.8

* Update to mill-mima 0.0.4

* Fetch all git history when checking binary compatibility

Author: lolgab

.github/workflows/actions.yml

@@ -16,6 +16,17 @@ jobs:
           java-version: 8
       - name: Run tests
         run: ./mill -i all __.publishArtifacts __.test
+  check-binary-compatibility:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v1
+        with:
+          java-version: 8
+      - name: Check Binary Compatibility
+        run: ./mill -i __.mimaReportBinaryIssues
 
   publish-sonatype:
     if: github.repository == 'com-lihaoyi/utest' && contains(github.ref, 'refs/tags/')

build.sc

@@ -1,6 +1,8 @@
 import mill._, scalalib._, scalajslib._, scalanativelib._, publish._
 import $ivy.`de.tototec::de.tobiasroeser.mill.vcs.version_mill0.9:0.1.1`
 import de.tobiasroeser.mill.vcs.version.VcsVersion
+import $ivy.`com.github.lolgab::mill-mima_mill0.9:0.0.4`
+import com.github.lolgab.mill.mima._
 
 val dottyVersions = sys.props.get("dottyVersion").toList
 
@@ -18,9 +20,11 @@ val scalaNativeVersions = for {
   scalaNativeV <- Seq("0.4.0")
 } yield (scalaV, scalaNativeV)
 
-trait UtestModule extends PublishModule {
+trait UtestModule extends PublishModule with Mima {
   def artifactName = "utest"
 
+  def mimaPreviousVersions = VcsVersion.vcsState().lastTag.toSeq
+
   def publishVersion = VcsVersion.vcsState().format()
 
   def pomSettings = PomSettings(

mill

@@ -3,7 +3,7 @@
 # This is a wrapper script, that automatically download mill from GitHub release pages
 # You can give the required mill version with MILL_VERSION env variable
 # If no version is given, it falls back to the value of DEFAULT_MILL_VERSION
-DEFAULT_MILL_VERSION=0.9.6-61-bd7927
+DEFAULT_MILL_VERSION=0.9.8
 
 set -e