Compiles with sbt 1.0 and sbt 0.13

1. ascii-graphs

We need a 2.12 version of ascii-graphs. The last commit to the project is in June 2013 (https://github.com/mdr/ascii-graphs/graphs/contributors). We are now in October 2017. I opened a PR (mdr/ascii-graphs#11) but I don't expect any progress on this front. We can maintain a fork or drop ascii-graphs.

2. ignoreMissingUpdate

ignoreMissingUpdate is a tricky one. Here is some explanation:

we need to duplicate the updateTask

in sbt it's define as:

```scala
def updateTask: Initialize[Task[UpdateReport]] = Def.task {
  // ...
  val uc0 = updateConfiguration.value
  // ...
}
```

since it's not scoped to our task (ex: `updateConfiguration in ignoreMissingUpdate`) we cannot just do

```scala
updateConfiguration in ignoreMissingUpdate := {
  updateConfiguration.value.withMissingOk(true)
}
```

For example, the following example yield `"u2: false"

```
val update2 = TaskKey[Unit]("update2", "...")
val update2Configuration = SettingKey[Boolean]("...")

update2 := Def.task {
  val u2 = (update2Configuration in update2).value
  println(s"u2: $u2")
}.value

update2Configuration := false
update2Configuration in update2 := true
```

3. cross publishing

We can use the ^ operator to publish. For example: `sbt "^ publish"` to publish for both sbt 0.13 and 1.0.

.travis.yml

@@ -2,4 +2,11 @@ sudo: false
 language: scala
 jdk: oraclejdk7
 script:
-- sbt test scripted
+# pending https://github.com/mdr/ascii-graphs/pull/11
+- git clone git://github.com/MasseGuillaume/ascii-graphs.git
+- pushd ascii-graphs
+- sbt + publishLocal
+- popd
+
+- sbt ";^test ;^scripted"
+

build.sbt

@@ -1,10 +1,18 @@
 ScriptedPlugin.scriptedSettings
 
 libraryDependencies ++= Seq(
-  "com.github.mdr" %% "ascii-graphs" % "0.0.3",
-  "org.specs2"     %% "specs2"       % "2.3.11" % Test
+  "com.github.mdr" %% "ascii-graphs" % "0.0.7-SNAPSHOT",
+  "org.specs2" %% "specs2-core" % "3.9.5" % Test 
 )
 
+libraryDependencies += Defaults.sbtPluginExtra(
+  "com.dwijnand" % "sbt-compat" % "1.1.0",
+  (sbtBinaryVersion in pluginCrossBuild).value,
+  (scalaBinaryVersion in update).value
+)
+
+crossSbtVersions := List("0.13.16", "1.0.2")
+
 scalacOptions ++= Seq(
   "-deprecation",
   "-encoding",
@@ -14,3 +22,6 @@ scalacOptions ++= Seq(
 )
 
 ScalariformSupport.formatSettings
+
+addCommandAlias("c1", ";cls;^^ 1.0.2;compile")
+addCommandAlias("c0", ";cls;^^ 0.13.16;compile")

src/main/scala-sbt-0.13/scala/net/virtualvoid/graph/compat.scala

@@ -0,0 +1,25 @@
+package net.virtualvoid.sbt.graph
+
+import sbt._
+import Keys._
+
+import CrossVersion._
+import DependencyGraphKeys._
+
+object compat {
+  def convertConfig(config: sbt.Configuration): String = {
+    config.toString
+  }
+
+/**
+   * This is copied directly from sbt/main/Defaults.java and then changed to update the UpdateConfiguration
+   * to ignore missing artifacts.
+   */
+  def ingnoreMissingSettings: Seq[Setting[_]] = Seq(
+    updateConfiguration in ignoreMissingUpdate := {
+      val config = updateConfiguration.value
+      new UpdateConfiguration(config.retrieve, true, config.logging)
+    },
+    ignoreMissingUpdate := sbt.Compat.updateTask(ignoreMissingUpdate).value
+  )
+}

src/main/scala-sbt-0.13/scala/net/virtualvoid/graph/model.scala

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2015 Johannes Rudolph
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package net.virtualvoid.sbt.graph
+
+import sbinary.{ Format, DefaultProtocol }
+
+object ModuleGraphProtocol extends DefaultProtocol {
+  implicit def seqFormat[T: Format]: Format[Seq[T]] = wrap[Seq[T], List[T]](_.toList, _.toSeq)
+  implicit val ModuleIdFormat: Format[ModuleId] = asProduct3(ModuleId)(ModuleId.unapply(_).get)
+  implicit val ModuleFormat: Format[Module] = asProduct6(Module)(Module.unapply(_).get)
+  implicit val ModuleGraphFormat: Format[ModuleGraph] = asProduct2(ModuleGraph.apply _)(ModuleGraph.unapply(_).get)
+}

src/main/scala-sbt-0.13/scala/sbt/compat.scala

@@ -0,0 +1,48 @@
+package sbt
+
+import Keys._
+import Def.Initialize
+
+import CrossVersion.partialVersion
+
+object Compat {
+
+  // https://github.com/sbt/sbt/blob/e3c4db5ae80fa3e2a40b7a81bee0822e49f76aaf/main/src/main/scala/sbt/Defaults.scala#L1471
+  def updateTask(task: TaskKey[_]): Initialize[Task[UpdateReport]] = Def.task {
+    val depsUpdated = transitiveUpdate.value.exists(!_.stats.cached)
+    val isRoot = executionRoots.value contains resolvedScoped.value
+    val s = streams.value
+    val scalaProvider = appConfiguration.value.provider.scalaProvider
+
+    // Only substitute unmanaged jars for managed jars when the major.minor parts of the versions the same for:
+    //   the resolved Scala version and the scalaHome version: compatible (weakly- no qualifier checked)
+    //   the resolved Scala version and the declared scalaVersion: assume the user intended scalaHome to override anything with scalaVersion
+    def subUnmanaged(subVersion: String, jars: Seq[File]) = (sv: String) ⇒
+      (partialVersion(sv), partialVersion(subVersion), partialVersion(scalaVersion.value)) match {
+        case (Some(res), Some(sh), _) if res == sh     ⇒ jars
+        case (Some(res), _, Some(decl)) if res == decl ⇒ jars
+        case _                                         ⇒ Nil
+      }
+
+    val subScalaJars: String ⇒ Seq[File] = SbtAccess.unmanagedScalaInstanceOnly.value match {
+      case Some(si) ⇒ subUnmanaged(si.version, si.allJars)
+      case None     ⇒ sv ⇒ if (scalaProvider.version == sv) scalaProvider.jars else Nil
+    }
+
+    val transform: UpdateReport ⇒ UpdateReport =
+      r ⇒ Classpaths.substituteScalaFiles(scalaOrganization.value, r)(subScalaJars)
+
+    val show = Reference.display(thisProjectRef.value)
+
+    Classpaths.cachedUpdate(
+      cacheFile = s.cacheDirectory,
+      label = show,
+      module = ivyModule.value,
+      config = (updateConfiguration in task).value,
+      transform = transform,
+      skip = (skip in update).value,
+      force = isRoot,
+      depsUpdated = depsUpdated,
+      log = s.log)
+  }
+}

src/main/scala-sbt-1.0/scala/net/virtualvoid/graph/compat.scala

@@ -0,0 +1,19 @@
+package net.virtualvoid.sbt.graph
+
+import DependencyGraphKeys._
+
+import sbt._
+import Keys._
+
+object compat {
+  def convertConfig(config: sbt.Configuration): sbt.Configuration = {
+    config
+  }
+
+  val ingnoreMissingSettings: Seq[Setting[_]] = Seq(
+    updateConfiguration in ignoreMissingUpdate := {
+      updateConfiguration.value.withMissingOk(true)
+    },
+    ignoreMissingUpdate := sbt.Compat.updateTask(ignoreMissingUpdate).value
+  )
+}

src/main/scala-sbt-1.0/scala/net/virtualvoid/graph/model.scala

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2015 Johannes Rudolph
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package net.virtualvoid.sbt.graph
+
+import sjsonnew._, LList.:*:
+
+object ModuleGraphProtocol extends BasicJsonProtocol {
+
+  implicit val ModuleIdFormat: IsoLList[ModuleId] =
+    LList.isoCurried(
+      (m: ModuleId) => 
+        ("organisation", m.organisation) :*: 
+        ("name", m.name) :*:
+        ("version", m.version) :*: 
+        LNil
+    ) { case 
+          (_, organisation) :*:
+          (_, name) :*:
+          (version, _) :*:
+          LNil => ModuleId(organisation, name, version)
+    }
+
+  implicit val ModuleFormat: IsoLList[Module] =
+    LList.isoCurried(
+      (m: Module) => 
+        ("id", m.id) :*: 
+        ("license", m.license) :*:
+        ("extraInfo", m.extraInfo) :*: 
+        ("evictedByVersion", m.evictedByVersion) :*: 
+        ("jarFile", m.jarFile) :*: 
+        ("error", m.error) :*:
+        LNil
+    ) {
+      case 
+        (_, id) :*: 
+        (_, license) :*:
+        (_, extraInfo) :*: 
+        (_, evictedByVersion) :*: 
+        (_, jarFile) :*: 
+        (_, error) :*:
+        LNil => Module(id, license, extraInfo, evictedByVersion, jarFile, error)
+    }
+
+
+  implicit val ModuleGraphFormat: IsoLList[ModuleGraph] =
+    LList.isoCurried(
+      (g: ModuleGraph) => 
+        ("nodes", g.nodes) :*: 
+        ("edges", g.edges) :*:
+        LNil
+    ) { case 
+          (_, nodes) :*:
+          (_, edges) :*:
+          LNil => ModuleGraph(nodes, edges)
+    }
+}

src/main/scala-sbt-1.0/scala/sbt/compat.scala

@@ -0,0 +1,62 @@
+package sbt
+
+import Keys._
+import Def.Initialize
+
+import CrossVersion.partialVersion
+import sbt.internal.LibraryManagement
+
+object Compat {
+
+  // https://github.com/sbt/sbt/blob/4ce4fb72bde3b8acfaf526b79d32ca1463bc687b/main/src/main/scala/sbt/Defaults.scala#L2298
+  def updateTask(task: TaskKey[_]): Initialize[Task[UpdateReport]] = Def.task {
+      val depsUpdated = transitiveUpdate.value.exists(!_.stats.cached)
+      val isRoot = executionRoots.value contains resolvedScoped.value
+      val s = streams.value
+      val scalaProvider = appConfiguration.value.provider.scalaProvider
+
+      // Only substitute unmanaged jars for managed jars when the major.minor parts of the versions the same for:
+      //   the resolved Scala version and the scalaHome version: compatible (weakly- no qualifier checked)
+      //   the resolved Scala version and the declared scalaVersion: assume the user intended scalaHome to override anything with scalaVersion
+      def subUnmanaged(subVersion: String, jars: Seq[File]) = (sv: String) ⇒
+        (partialVersion(sv), partialVersion(subVersion), partialVersion(scalaVersion.value)) match {
+          case (Some(res), Some(sh), _) if res == sh     ⇒ jars
+          case (Some(res), _, Some(decl)) if res == decl ⇒ jars
+          case _                                         ⇒ Nil
+        }
+
+      val subScalaJars: String ⇒ Seq[File] = SbtAccess.unmanagedScalaInstanceOnly.value match {
+        case Some(si) ⇒ subUnmanaged(si.version, si.allJars)
+        case None     ⇒ sv ⇒ if (scalaProvider.version == sv) scalaProvider.jars else Nil
+      }
+
+      val transform: UpdateReport ⇒ UpdateReport =
+        r ⇒ Classpaths.substituteScalaFiles(scalaOrganization.value, r)(subScalaJars)
+
+      val evictionOptions = Def.taskDyn {
+        if (executionRoots.value.exists(_.key == evicted.key))
+          Def.task(EvictionWarningOptions.empty)
+        else Def.task((evictionWarningOptions in update).value)
+      }.value
+
+      LibraryManagement.cachedUpdate(
+        // LM API
+        lm = dependencyResolution.value,
+        // Ivy-free ModuleDescriptor
+        module = ivyModule.value,
+        s.cacheStoreFactory.sub(updateCacheName.value),
+        Reference.display(thisProjectRef.value),
+        (updateConfiguration in task).value,
+        transform = transform,
+        skip = (skip in update).value,
+        force = isRoot,
+        depsUpdated = transitiveUpdate.value.exists(!_.stats.cached),
+        uwConfig = (unresolvedWarningConfiguration in update).value,
+        ewo = evictionOptions,
+        mavenStyle = publishMavenStyle.value,
+        compatWarning = compatibilityWarningOptions.value,
+        log = s.log
+      )
+  }
+}
+