do not emit jar files for the legacy artifacts

Author: hamzaremmal

project/Build.scala

@@ -1257,14 +1257,12 @@ object Build {
       Test / test    := (`scala-library-nonbootstrapped` / Test / test).value,
       // Claim that the classes generated by this project are the same as the one we get from `scala-library-nonbootstrapped`
       Compile / classDirectory := (`scala-library-nonbootstrapped` / Compile / classDirectory).value,
-      // Packaging configuration of the stdlib
-      Compile / packageBin / publishArtifact := true,
-      Compile / packageDoc / publishArtifact := false,
-      Compile / packageSrc / publishArtifact := true,
-      // Only publish compilation artifacts, no test artifacts
+      // This artifact is a legacy that only exists to evict projects
+      // that depends on it to the newer version and the new artifact. 
+      // As such, it is published only as a `pom` and it has no `jar`.
+      publishMavenStyle := true,
+      Compile / publishArtifact := false,
       Test    / publishArtifact := false,
-      // Do not allow to publish this project for now
-      publish / skip := false,
       // Project specific target folder. sbt doesn't like having two projects using the same target folder
       target := target.value / "scala3-library-nonbootstrapped",
     )
@@ -1378,14 +1376,12 @@ object Build {
       Test / run     := (`scala-library-bootstrapped` / Test / run).evaluated,
       // Claim that the classes generated by this project are the same as the one we get from `scala-library-bootstrapped`
       Compile / classDirectory := (`scala-library-bootstrapped` / Compile / classDirectory).value,
-      // Packaging configuration of the stdlib
-      Compile / packageBin / publishArtifact := true,
-      Compile / packageDoc / publishArtifact := false,
-      Compile / packageSrc / publishArtifact := true,
-      // Only publish compilation artifacts, no test artifacts
+      // This artifact is a legacy that only exists to evict projects
+      // that depends on it to the newer version and the new artifact. 
+      // As such, it is published only as a `pom` and it has no `jar`.
+      publishMavenStyle := true,
+      Compile / publishArtifact := false,
       Test    / publishArtifact := false,
-      // Do not allow to publish this project for now
-      publish / skip := false,
       // Project specific target folder. sbt doesn't like having two projects using the same target folder
       target := target.value / "scala3-library-bootstrapped",
       bspEnabled := false,
@@ -1549,14 +1545,12 @@ object Build {
       Test / compile := (`scala-library-sjs` / Test / compile).value,
       Test / doc     := (`scala-library-sjs` / Test / doc).value,
       Test / run     := (`scala-library-sjs` / Test / run).evaluated,
-      // Packaging configuration of the stdlib
-      Compile / packageBin / publishArtifact := true,
-      Compile / packageDoc / publishArtifact := false,
-      Compile / packageSrc / publishArtifact := true,
-      // Only publish compilation artifacts, no test artifacts
+      // This artifact is a legacy that only exists to evict projects
+      // that depends on it to the newer version and the new artifact. 
+      // As such, it is published only as a `pom` and it has no `jar`.
+      publishMavenStyle := true,
+      Compile / publishArtifact := false,
       Test    / publishArtifact := false,
-      // Do not allow to publish this project for now
-      publish / skip := false,
       // Project specific target folder. sbt doesn't like having two projects using the same target folder
       target := target.value / "scala3-library",
       bspEnabled := false,