From 69df48cebe37d19b26645df1d59659f381dfecbf Mon Sep 17 00:00:00 2001
From: David Barri <japgolly@gmail.com>
Date: Thu, 12 Aug 2021 12:49:27 +1000
Subject: [PATCH] CI: Add temporary hack for Scala 2.10

---
 .github/workflows/ci.yml |  4 ++++
 build.sbt                | 10 +++++-----
 prepareForScala210.sh    |  6 ++++++
 project/plugins.sbt      |  2 +-
 4 files changed, 16 insertions(+), 6 deletions(-)
 create mode 100755 prepareForScala210.sh

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b7052246f..b81aac291 100644
--- a/.github/workflows/ci.yml
+++ b/.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
 
diff --git a/build.sbt b/build.sbt
index 20f9f303c..968d843df 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,4 +1,4 @@
-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 + "> ")
@@ -6,14 +6,14 @@ 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
diff --git a/prepareForScala210.sh b/prepareForScala210.sh
new file mode 100755
index 000000000..fbbc215e6
--- /dev/null
+++ b/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
diff --git a/project/plugins.sbt b/project/plugins.sbt
index f2707b716..91c2adca3 100644
--- a/project/plugins.sbt
+++ b/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