Generalize Zinc Worker (#514)

* Generalize Zinc worker

- Compiler bridges can now be either pre-compiled or on-demand-compiled
- Scala library/compiler jar discovery is now configurable
- Zinc compiler cache is now configurable, rather than being hardcoded at n=1

* .

* update constructor args

* remove duplicate util/AggWrapper.scala file

* fix

* fix

* fix

* cleanup

7 files changed, 10 insertions, 9 deletions

diff --git a/main/test/resources/examples/javac/build.sc b/main/test/resources/examples/javac/build.sc
index 2ed9f915..17366219 100644
--- a/main/test/resources/examples/javac/build.sc
+++ b/main/test/resources/examples/javac/build.sc
@@ -2,7 +2,7 @@ import mill.T
 import mill.eval.JavaCompileJarTests.compileAll
 import mill.api.PathRef
 import mill.modules.Jvm
-import mill.util.Loose
+import mill.api.Loose
 
 def sourceRootPath = millSourcePath / 'src
 def resourceRootPath = millSourcePath / 'resources
diff --git a/main/test/src/define/CacherTests.scala b/main/test/src/define/CacherTests.scala
index 59ebf3f6..1524e5c1 100644
--- a/main/test/src/define/CacherTests.scala
+++ b/main/test/src/define/CacherTests.scala
@@ -1,7 +1,7 @@
 package mill.define
 
 import mill.util.{DummyLogger, TestEvaluator, TestUtil}
-import mill.util.Strict.Agg
+import mill.api.Strict.Agg
 import mill.T
 import mill.api.Result.Success
 import utest._
diff --git a/main/test/src/define/GraphTests.scala b/main/test/src/define/GraphTests.scala
index 224ce59f..b36dbf95 100644
--- a/main/test/src/define/GraphTests.scala
+++ b/main/test/src/define/GraphTests.scala
@@ -4,7 +4,7 @@ package mill.define
 import mill.eval.Evaluator
 import mill.util.{TestGraphs, TestUtil}
 import utest._
-import mill.util.Strict.Agg
+import mill.api.Strict.Agg
 object GraphTests extends TestSuite{
 
   val tests = Tests{
diff --git a/main/test/src/eval/EvaluationTests.scala b/main/test/src/eval/EvaluationTests.scala
index 74f9088c..7f924db2 100644
--- a/main/test/src/eval/EvaluationTests.scala
+++ b/main/test/src/eval/EvaluationTests.scala
@@ -5,7 +5,7 @@ import mill.util.TestUtil.{Test, test}
 import mill.define.{Discover, Graph, Target, Task}
 import mill.{Module, T}
 import mill.util.{DummyLogger, TestEvaluator, TestGraphs, TestUtil}
-import mill.util.Strict.Agg
+import mill.api.Strict.Agg
 import utest._
 import utest.framework.TestPath
 
diff --git a/main/test/src/eval/JavaCompileJarTests.scala b/main/test/src/eval/JavaCompileJarTests.scala
index 426c6ea6..0f9002df 100644
--- a/main/test/src/eval/JavaCompileJarTests.scala
+++ b/main/test/src/eval/JavaCompileJarTests.scala
@@ -4,12 +4,13 @@ import mill.define.{Discover, Input, Target, Task}
 import mill.modules.Jvm
 import mill.api.Ctx.Dest
 import mill.{Module, T}
-import mill.util.{DummyLogger, Loose, TestEvaluator, TestUtil}
-import mill.util.Strict.Agg
+import mill.util.{DummyLogger, TestEvaluator, TestUtil}
+import mill.api.Strict.Agg
+import mill.api.Loose
 import utest._
 import mill._
 object JavaCompileJarTests extends TestSuite{
-  def compileAll(sources: mill.util.Loose.Agg[PathRef])(implicit ctx: Dest) = {
+  def compileAll(sources: mill.api.Loose.Agg[PathRef])(implicit ctx: Dest) = {
     os.makeDir.all(ctx.dest)
 
     os.proc("javac", sources.map(_.path.toString()).toSeq, "-d", ctx.dest).call(ctx.dest)
diff --git a/main/test/src/util/TestEvaluator.scala b/main/test/src/util/TestEvaluator.scala
index 9a235679..81c8fe12 100644
--- a/main/test/src/util/TestEvaluator.scala
+++ b/main/test/src/util/TestEvaluator.scala
@@ -3,7 +3,7 @@ package mill.util
 import mill.define.{Input, Target, Task}
 import mill.api.Result.OuterStack
 import mill.eval.{Evaluator, Result}
-import mill.util.Strict.Agg
+import mill.api.Strict.Agg
 import utest.assert
 import utest.framework.TestPath
 
diff --git a/main/test/src/util/TestUtil.scala b/main/test/src/util/TestUtil.scala
index baab2992..462b7f5c 100644
--- a/main/test/src/util/TestUtil.scala
+++ b/main/test/src/util/TestUtil.scala
@@ -5,7 +5,7 @@ import mill.define._
 import mill.api.Result
 import mill.api.Result.OuterStack
 import utest.assert
-import mill.util.Strict.Agg
+import mill.api.Strict.Agg
 import utest.framework.TestPath
 
 import scala.collection.mutable