CI: Add temporary hack for Scala 2.10

Author: japgolly

.github/workflows/ci.yml

@@ -28,6 +28,10 @@ jobs:
           java-version: "adopt@1.8"
       - uses: coursier/cache-action@v6
 
+      - name: Hacks for Scala 2.10
+        if: matrix.scalaversion == '2.10.7'
+        run: ./prepareForScala210.sh
+
       - name: Build
         run: sbt "++${{ matrix.scalaversion }}" package
 

build.sbt

@@ -1,19 +1,19 @@
-import _root_.scalafix.sbt.BuildInfo.scalafixVersion
+import _root_.scalafix.sbt.BuildInfo.scalafixVersion // delete if Scala 2.10
 import scalatex.ScalatexReadme
 
 ThisBuild / shellPrompt := ((s: State) => Project.extract(s).currentRef.project + "> ")
 
 lazy val scalafixRules = project
   .in(file("scalafix"))
   .settings(
-    libraryDependencies += "ch.epfl.scala" %% "scalafix-core" % scalafixVersion,
+    libraryDependencies += "ch.epfl.scala" %% "scalafix-core" % scalafixVersion, // delete if Scala 2.10
   )
 
 lazy val root = project
   .in(file("."))
   .enablePlugins(ScalaJSPlugin)
-  .enablePlugins(ScalafixPlugin)
-  .dependsOn(scalafixRules % ScalafixConfig)
+  .enablePlugins(ScalafixPlugin) // delete if Scala 2.10
+  .dependsOn(scalafixRules % ScalafixConfig) // delete if Scala 2.10
 
 name := "Scala.js DOM"
 
@@ -131,6 +131,6 @@ ThisBuild / prePR_nonCross := Def.sequential(
   root / clean,
   root / Compile / scalafmt,
   root / Compile / compile,
-  (root / Compile / scalafix).toTask(""),
+  (root / Compile / scalafix).toTask(""), // delete if Scala 2.10
   example / Compile / compile,
 ).value

prepareForScala210.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -euo pipefail
+cd "$(dirname "$0")"
+
+sed -i -e '/delete if Scala 2.10/d' *.sbt project/*.sbt
+rm scalafix.sbt

project/plugins.sbt

@@ -9,4 +9,4 @@ addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.0.0")
 
 addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.7")
 
-addSbtPlugin("ch.epfl.scala"  % "sbt-scalafix" % "0.9.29")
+addSbtPlugin("ch.epfl.scala"  % "sbt-scalafix" % "0.9.29") // delete if Scala 2.10