From 708fffa290586c3009350e8b000ab3d5e001a735 Mon Sep 17 00:00:00 2001
From: xuwei-k <6b656e6a69@gmail.com>
Date: Sat, 6 Sep 2025 19:33:41 +0900
Subject: [PATCH] delete unused "internal" package code

---
 build.sbt                                     | 30 +++++++-
 .../main/scala/sbt/internal/KeyIndex.scala    |  2 -
 .../internal/graph/backend/IvyReport.scala    | 68 -------------------
 .../graph/rendering/LicenseInfo.scala         | 26 -------
 .../librarymanagement/FakeRawRepository.scala | 19 ------
 .../sbt/internal/server/NetworkChannel.scala  |  4 --
 .../sbt/internal/util/CacheEventLog.scala     |  3 -
 7 files changed, 28 insertions(+), 124 deletions(-)
 delete mode 100644 main/src/main/scala/sbt/internal/graph/backend/IvyReport.scala
 delete mode 100644 main/src/main/scala/sbt/internal/graph/rendering/LicenseInfo.scala
 delete mode 100644 main/src/main/scala/sbt/internal/librarymanagement/FakeRawRepository.scala

diff --git a/build.sbt b/build.sbt
index 68c7f3fb5..3dcd3dd76 100644
--- a/build.sbt
+++ b/build.sbt
@@ -117,7 +117,7 @@ def testedBaseSettings: Seq[Setting[?]] =
 
 val sbt20Plus =
   Seq(
-    "2.0.0-RC2",
+    "2.0.0-RC4",
   )
 val mimaSettings = mimaSettingsSince(sbt20Plus)
 def mimaSettingsSince(versions: Seq[String]): Seq[Def.Setting[?]] = Def settings (
@@ -372,6 +372,10 @@ lazy val utilCache = project
     Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
     Compile / generateContrabands / contrabandFormatsForType := ContrabandConfig.getFormats,
     mimaSettings,
+    mimaBinaryIssueFilters ++= Seq(
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.util.ActionCacheError"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.util.ActionCacheError$")
+    ),
     Test / fork := true,
   )
   .configure(
@@ -730,7 +734,29 @@ lazy val mainProj = (project in file("main"))
     // TODO: Fix doc
     Compile / doc / sources := Nil,
     mimaSettings,
-    // mimaBinaryIssueFilters ++= Vector(),
+    mimaBinaryIssueFilters ++= Vector(
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.ConfigData"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.ConfigData$"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.graph.backend.IvyReport"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.graph.backend.IvyReport$"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.graph.rendering.LicenseInfo"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.graph.rendering.LicenseInfo$"),
+      ProblemFilters.exclude[MissingClassProblem](
+        "sbt.internal.librarymanagement.FakeRawRepository"
+      ),
+      ProblemFilters.exclude[MissingClassProblem](
+        "sbt.internal.librarymanagement.FakeRawRepository$"
+      ),
+      ProblemFilters.exclude[MissingFieldProblem]("sbt.internal.server.NetworkChannel.SingleLine"),
+      ProblemFilters.exclude[MissingFieldProblem]("sbt.internal.server.NetworkChannel.InHeader"),
+      ProblemFilters.exclude[MissingFieldProblem]("sbt.internal.server.NetworkChannel.InBody"),
+      ProblemFilters.exclude[MissingClassProblem](
+        "sbt.internal.server.NetworkChannel$ChannelState"
+      ),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.server.NetworkChannel$InBody$"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.server.NetworkChannel$InHeader$"),
+      ProblemFilters.exclude[MissingClassProblem]("sbt.internal.server.NetworkChannel$SingleLine$"),
+    ),
   )
   .dependsOn(lmCore, lmIvy, lmCoursierShadedPublishing)
   .configure(addSbtIO, addSbtCompilerInterface, addSbtZincCompileCore)
diff --git a/main/src/main/scala/sbt/internal/KeyIndex.scala b/main/src/main/scala/sbt/internal/KeyIndex.scala
index c3c97cea9..fde16c5db 100644
--- a/main/src/main/scala/sbt/internal/KeyIndex.scala
+++ b/main/src/main/scala/sbt/internal/KeyIndex.scala
@@ -132,8 +132,6 @@ private[sbt] final class AKeyIndex(val data: Relation[Option[AttributeKey[?]], S
 
 private[sbt] case class IdentifiableConfig(name: String, ident: Option[String])
 
-private[sbt] case class ConfigData(ident: Option[String], keys: AKeyIndex)
-
 /*
  * data contains the mapping between a configuration name and its keys.
  * configIdentToName contains the mapping between a configuration ident and its name
diff --git a/main/src/main/scala/sbt/internal/graph/backend/IvyReport.scala b/main/src/main/scala/sbt/internal/graph/backend/IvyReport.scala
deleted file mode 100644
index 71504081c..000000000
--- a/main/src/main/scala/sbt/internal/graph/backend/IvyReport.scala
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * sbt
- * Copyright 2023, Scala center
- * Copyright 2011 - 2022, Lightbend, Inc.
- * Copyright 2008 - 2010, Mark Harrah
- * Licensed under Apache License 2.0 (see LICENSE)
- */
-
-package sbt
-package internal
-package graph
-package backend
-
-import scala.xml.{ NodeSeq, Document, Node }
-import scala.xml.parsing.ConstructingParser
-
-object IvyReport {
-  def fromReportFile(ivyReportFile: String): ModuleGraph =
-    fromReportXML(loadXML(ivyReportFile))
-
-  def fromReportXML(doc: Document): ModuleGraph = {
-    def edgesForModule(id: GraphModuleId, revision: NodeSeq): Seq[Edge] =
-      for {
-        caller <- revision \ "caller"
-        callerModule = moduleIdFromElement(caller, caller.attribute("callerrev").get.text)
-      } yield (moduleIdFromElement(caller, caller.attribute("callerrev").get.text), id)
-
-    val moduleEdges: Seq[(Module, Seq[Edge])] = for {
-      mod <- doc \ "dependencies" \ "module"
-      revision <- mod \ "revision"
-      rev = revision.attribute("name").get.text
-      moduleId = moduleIdFromElement(mod, rev)
-      module = Module(
-        moduleId,
-        (revision \ "license").headOption.flatMap(_.attribute("name")).map(_.text),
-        evictedByVersion =
-          (revision \ "evicted-by").headOption.flatMap(_.attribute("rev").map(_.text)),
-        error = revision.attribute("error").map(_.text)
-      )
-    } yield (module, edgesForModule(moduleId, revision))
-
-    val (nodes, edges) = moduleEdges.unzip
-
-    val info = (doc \ "info").head
-    def infoAttr(name: String): String =
-      info
-        .attribute(name)
-        .getOrElse(throw new IllegalArgumentException("Missing attribute " + name))
-        .text
-    val rootModule = Module(
-      GraphModuleId(infoAttr("organization"), infoAttr("module"), infoAttr("revision"))
-    )
-
-    ModuleGraph(rootModule +: nodes, edges.flatten)
-  }
-
-  private def moduleIdFromElement(element: Node, version: String): GraphModuleId =
-    GraphModuleId(
-      element.attribute("organization").get.text,
-      element.attribute("name").get.text,
-      version
-    )
-
-  private def loadXML(ivyReportFile: String) =
-    ConstructingParser
-      .fromSource(scala.io.Source.fromFile(ivyReportFile), preserveWS = false)
-      .document()
-}
diff --git a/main/src/main/scala/sbt/internal/graph/rendering/LicenseInfo.scala b/main/src/main/scala/sbt/internal/graph/rendering/LicenseInfo.scala
deleted file mode 100644
index 8c1f128f0..000000000
--- a/main/src/main/scala/sbt/internal/graph/rendering/LicenseInfo.scala
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * sbt
- * Copyright 2023, Scala center
- * Copyright 2011 - 2022, Lightbend, Inc.
- * Copyright 2008 - 2010, Mark Harrah
- * Licensed under Apache License 2.0 (see LICENSE)
- */
-
-package sbt
-package internal
-package graph
-package rendering
-
-object LicenseInfo {
-  def render(graph: ModuleGraph): String =
-    graph.nodes
-      .filter(_.isUsed)
-      .groupBy(_.license)
-      .toSeq
-      .sortBy(_._1)
-      .map { (license, modules) =>
-        license.getOrElse("No license specified") + "\n" +
-          modules.map(m => s"\t ${m.id.idString}").mkString("\n")
-      }
-      .mkString("\n\n")
-}
diff --git a/main/src/main/scala/sbt/internal/librarymanagement/FakeRawRepository.scala b/main/src/main/scala/sbt/internal/librarymanagement/FakeRawRepository.scala
deleted file mode 100644
index 4d196279d..000000000
--- a/main/src/main/scala/sbt/internal/librarymanagement/FakeRawRepository.scala
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * sbt
- * Copyright 2023, Scala center
- * Copyright 2011 - 2022, Lightbend, Inc.
- * Copyright 2008 - 2010, Mark Harrah
- * Licensed under Apache License 2.0 (see LICENSE)
- */
-
-package sbt
-package internal
-package librarymanagement
-
-import sbt.io.IO
-import sbt.librarymanagement.RawRepository
-
-object FakeRawRepository {
-  def create(name: String): RawRepository =
-    new RawRepository(new FakeResolver(name, IO.createTemporaryDirectory, Map.empty), name)
-}
diff --git a/main/src/main/scala/sbt/internal/server/NetworkChannel.scala b/main/src/main/scala/sbt/internal/server/NetworkChannel.scala
index a708a1236..225272713 100644
--- a/main/src/main/scala/sbt/internal/server/NetworkChannel.scala
+++ b/main/src/main/scala/sbt/internal/server/NetworkChannel.scala
@@ -946,10 +946,6 @@ final class NetworkChannel(
 }
 
 object NetworkChannel {
-  sealed trait ChannelState
-  case object SingleLine extends ChannelState
-  case object InHeader extends ChannelState
-  case object InBody extends ChannelState
   private[sbt] def cancel(
       execID: Option[String],
       id: String,
diff --git a/util-cache/src/main/scala/sbt/internal/util/CacheEventLog.scala b/util-cache/src/main/scala/sbt/internal/util/CacheEventLog.scala
index 72ba17101..af8df597a 100644
--- a/util-cache/src/main/scala/sbt/internal/util/CacheEventLog.scala
+++ b/util-cache/src/main/scala/sbt/internal/util/CacheEventLog.scala
@@ -3,7 +3,6 @@ package internal
 package util
 
 import scala.collection.concurrent.TrieMap
-import xsbti.VirtualFileRef
 
 enum ActionCacheEvent:
   case Found(storeName: String)
@@ -11,8 +10,6 @@ enum ActionCacheEvent:
   case Error
 end ActionCacheEvent
 
-case class ActionCacheError(outputFiles: Seq[VirtualFileRef])
-
 enum CacheEventSummary:
   case Empty
   case Data(