Try to see if 2.12.14 just works with graalvm

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
           - '8'
           - '11'
         scala:
-          - '2.12.11'
+          - '2.12.14'
     timeout-minutes: 30
   testPY:
     runs-on: ubuntu-latest
@@ -44,7 +44,7 @@ jobs:
         java:
           - '11'
         scala:
-          - '2.12.11'
+          - '2.12.14'
         python:
           - '3.5'
     timeout-minutes: 30
@@ -64,7 +64,7 @@ jobs:
         java:
           - '11'
         scala:
-          - '2.12.11'
+          - '2.12.14'
     timeout-minutes: 30
   testWithCoverageReport:
     runs-on: ubuntu-latest
@@ -103,7 +103,7 @@ jobs:
     strategy:
       matrix:
         scala:
-          - '2.12.11'
+          - '2.12.14'
 name: ci
 on:
   pull_request: {}

build.sbt

@@ -7,8 +7,8 @@ lazy val commonSettings = Seq(
   version      := "0.0.7",
   addCompilerPlugin("org.typelevel" %% "kind-projector" % "0.13.0" cross CrossVersion.full),
   addCompilerPlugin("com.olegpy" %% "better-monadic-for" % "0.3.1"),
-  scalaVersion := "2.12.11",
-  crossScalaVersions := Seq("2.12.11"),
+  scalaVersion := "2.12.14",
+  crossScalaVersions := Seq("2.12.14"),
   // from: https://tpolecat.github.io/2017/04/25/scalac-flags.html
   scalacOptions ++= Seq(
     "-deprecation",                      // Emit warning and location for usages of deprecated APIs.
@@ -59,9 +59,9 @@ lazy val commonSettings = Seq(
     "-Ywarn-value-discard"               // Warn when non-Unit expression results are unused.
   ),
 
-  scalacOptions in (Compile, console) --= Seq("-Ywarn-unused:imports", "-Xfatal-warnings"),
+  Compile / console / scalacOptions --= Seq("-Ywarn-unused:imports", "-Xfatal-warnings"),
 
-  testOptions in Test += Tests.Argument("-oDF"),
+  Test / testOptions += Tests.Argument("-oDF"),
 )
 
 lazy val commonJsSettings = Seq(
@@ -87,7 +87,7 @@ lazy val docs = (project in file("docs"))
   .settings(
     name := "paradox docs",
     paradoxTheme := Some(builtinParadoxTheme("generic")),
-    paradoxProperties in Compile ++= Map(
+    Compile / paradoxProperties ++= Map(
       "empty" -> "",
       "version" -> version.value
     ),
@@ -119,7 +119,15 @@ lazy val cli = (project in file("cli")).
   settings(
     commonSettings,
     name := "bosatsu-cli",
-    test in assembly := {},
+    assembly / test := {},
+    assembly / assemblyMergeStrategy := {
+      case PathList("scala", "annotation", "nowarn$.class" | "nowarn.class") =>
+        // this is duplicated in scala-collection-compat
+        MergeStrategy.last
+      case x =>
+        val oldStrategy = (assembly / assemblyMergeStrategy).value
+	oldStrategy(x)
+    },
     assembly / mainClass := Some("org.bykn.bosatsu.Main"),
     Compile / mainClass := Some("org.bykn.bosatsu.Main"),
     libraryDependencies ++=
@@ -129,10 +137,11 @@ lazy val cli = (project in file("cli")).
         jawnAst.value % Test,
         jython.value % Test,
       ),
-    PB.targets in Compile := Seq(
-     scalapb.gen() -> (sourceManaged in Compile).value
+    Compile / PB.targets := Seq(
+     scalapb.gen() -> (Compile / sourceManaged).value
     ),
-    nativeImageOptions ++= Seq("--static", "--no-fallback", "--verbose", "--initialize-at-build-time")
+    nativeImageOptions ++= Seq("--static", "--no-fallback", "--verbose", "--initialize-at-build-time"),
+    nativeImageVersion := "21.1.0"
    )
   .dependsOn(coreJVM % "compile->compile;test->test")
   .enablePlugins(NativeImagePlugin)
@@ -141,7 +150,7 @@ lazy val core = (crossProject(JSPlatform, JVMPlatform).crossType(CrossType.Pure)
   settings(
     commonSettings,
     name := "bosatsu-core",
-    test in assembly := {},
+    assembly / test := {},
     libraryDependencies ++=
       Seq(
         cats.value,
@@ -175,7 +184,7 @@ lazy val jsapi = (crossProject(JSPlatform).crossType(CrossType.Pure) in file("js
     commonSettings,
     commonJsSettings,
     name := "bosatsu-jsapi",
-    test in assembly := {},
+    assembly / test := {},
     libraryDependencies ++=
       Seq(
         cats.value,