Use snappy

build.sbt

@@ -283,7 +283,8 @@ lazy val zincPersist = (projectMatrix in internalPath / "zinc-persist")
     name := "zinc Persist",
     libraryDependencies ++= Seq(
       sbinary.exclude("org.scala-lang.modules", "scala-xml_" + scalaBinaryVersion.value),
-      scalaXml
+      scalaXml,
+      snappy,
     ),
     compileOrder := sbt.CompileOrder.Mixed,
     Compile / scalacOptions ++= (scalaVersion.value match {

internal/zinc-persist/src/main/scala/sbt/internal/inc/consistent/ConsistentFileAnalysisStore.scala

@@ -12,6 +12,8 @@ package sbt.internal.inc.consistent
  * additional information regarding copyright ownership.
  */
 
+import org.xerial.snappy.{ SnappyInputStream, SnappyOutputStream }
+
 import java.io.{ File, FileInputStream, FileOutputStream }
 import java.util.Optional
 import sbt.io.{ IO, Using }
@@ -85,7 +87,7 @@ object ConsistentFileAnalysisStore {
       if (!file.getParentFile.exists()) file.getParentFile.mkdirs()
       val fout = new FileOutputStream(tmpAnalysisFile)
       try {
-        val gout = new ParallelGzipOutputStream(fout, ec, parallelism)
+        val gout = new SnappyOutputStream(fout)
         val ser = sf.serializerFor(gout)
         format.write(ser, analysis, setup)
         gout.close()
@@ -98,11 +100,14 @@ object ConsistentFileAnalysisStore {
       allCatch.opt(unsafeGet()).toOptional
     }
 
-    def unsafeGet(): AnalysisContents =
-      Using.gzipInputStream(new FileInputStream(file)) { in =>
+    def unsafeGet(): AnalysisContents = {
+      Using.resource(new SnappyInputStream(_: FileInputStream))(
+        new FileInputStream(file)
+      ) { in =>
         val deser = sf.deserializerFor(in)
         val (analysis, setup) = format.read(deser)
         AnalysisContents.create(analysis, setup)
       }
+    }
   }
 }

project/Dependencies.scala

@@ -85,6 +85,7 @@ object Dependencies {
     "com.eed3si9n" %% "sjson-new-scalajson" % contrabandSjsonNewVersion.value
   }
   val zeroAllocationHashing = "net.openhft" % "zero-allocation-hashing" % "0.16"
+  val snappy = "org.xerial.snappy" % "snappy-java" % "1.1.10.7"
   val scala2BinaryBridge = "org.scala-lang" % "scala2-sbt-bridge" % scala213ForBridge
   val scala3BinaryBridge = "org.scala-lang" % "scala3-sbt-bridge" % scala3ForBridge