Fix for #117: False positives with For3Use2_13

src/main/scala/explicitdeps/Logic.scala

@@ -1,8 +1,7 @@
 package explicitdeps
 
 import java.io.File
-
-import sbt.librarymanagement.ModuleID
+import sbt.librarymanagement.{For2_13Use3, For3Use2_13, ModuleID}
 import sbt.util.Logger
 
 object Logic {
@@ -88,9 +87,14 @@ object Logic {
 
 
     val declaredCompileDependencies = compileConfigLibraryDependencies
-      .map{moduleId => 
-        val isCross = moduleId.crossVersion.isInstanceOf[Binary] ||  moduleId.crossVersion.isInstanceOf[Full]
-        Dependency(moduleId.organization, moduleId.name, moduleId.revision, isCross)
+      .map{moduleId =>
+        val (isCross, suffix) = moduleId.crossVersion match {
+          case _: For3Use2_13 if scalaVersion.binary == "3" => (false, "_2.13")
+          case _: For2_13Use3 if scalaVersion.binary == "2.13" => (false, "_3")
+          case _: Binary | _: Full | _: For3Use2_13 | _: For2_13Use3 => (true, "")
+          case _ => (false, "")
+        }
+        Dependency(moduleId.organization, moduleId.name + suffix, moduleId.revision, isCross)
       }
     log.debug(s"Declared dependencies:\n${declaredCompileDependencies.mkString("  ", "\n  ", "")}")
 

src/sbt-test/basic/transitional/build.sbt

@@ -0,0 +1,19 @@
+import sbt.CrossVersion.for3Use2_13
+
+val commonDeps = Seq(
+  "org.typelevel" %% "cats-core" % "2.13.0" cross for3Use2_13,
+)
+
+val coreDeps = commonDeps ++ Seq("org.typelevel" %% "shapeless3-typeable" % "3.5.0")
+val core = project
+  .in(file("core"))
+  .settings(libraryDependencies ++= coreDeps, scalaVersion := "3.7.4")
+
+val toolsDeps = commonDeps ++ Seq("org.scalameta" %% "trees" % "4.3.0" cross for3Use2_13)
+val tools = project
+  .in(file("tools"))
+  .settings(libraryDependencies ++= toolsDeps, scalaVersion := "2.13.18")
+
+val root = project
+  .in(file("."))
+  .aggregate(core, tools)

src/sbt-test/basic/transitional/core/src/main/scala/Core.scala

@@ -0,0 +1,7 @@
+import cats.data.NonEmptyList
+import shapeless3.typeable.Typeable
+
+object Core {
+  println(NonEmptyList.of(1, 2, 3))
+  println(Typeable[String].cast(42) :: Typeable[Int].cast(42) :: Nil)
+}

src/sbt-test/basic/transitional/project/plugins.sbt

@@ -0,0 +1 @@
+addSbtPlugin("com.github.cb372" % "sbt-explicit-dependencies" % sys.props("plugin.version"))

src/sbt-test/basic/transitional/test

@@ -0,0 +1,2 @@
+> unusedCompileDependenciesTest
+> undeclaredCompileDependenciesTest

src/sbt-test/basic/transitional/tools/src/main/scala/Tools.scala

@@ -0,0 +1,7 @@
+import cats.data.NonEmptyList
+import scala.meta._
+
+object Tools {
+  println(NonEmptyList.of(1, 2, 3))
+  println(Term.Name("Foo"))
+}