Path problem solved by a fresh run of sbt genSrc. Remove patch.

patches/antlr4-package-path.patch

-diff --git a/src/main/scala/uvm/ir/textinput/UIRTextReader.scala b/src/main/scala/uvm/ir/textinput/UIRTextReader.scala
-index e00574c..5d3e09b 100644
---- a/src/main/scala/uvm/ir/textinput/UIRTextReader.scala
-+++ b/src/main/scala/uvm/ir/textinput/UIRTextReader.scala
-@@ -11,9 +11,9 @@ import com.typesafe.scalalogging.Logger
- 
- import uvm._
- import uvm.comminsts.CommInsts
--import uvm.ir.textinput.gen._
--import uvm.ir.textinput.gen.UIRParser._
--import uvm.ir.textinput.gen.UIRParser.StringLiteralContext
-+import antlr4.uvm.ir.textinput.gen._
-+import antlr4.uvm.ir.textinput.gen.UIRParser._
-+import antlr4.uvm.ir.textinput.gen.UIRParser.StringLiteralContext
- import uvm.ssavariables._
- import uvm.types._
- import uvm.utils.AdvancedAntlrHelper
-diff --git a/src/main/scala/uvm/refimpl/hail/HailScriptLoader.scala b/src/main/scala/uvm/refimpl/hail/HailScriptLoader.scala
-index a0b4aca..53897d3 100644
---- a/src/main/scala/uvm/refimpl/hail/HailScriptLoader.scala
-+++ b/src/main/scala/uvm/refimpl/hail/HailScriptLoader.scala
-@@ -14,9 +14,9 @@ import com.typesafe.scalalogging.Logger
- 
- import uvm._
- import uvm.ir.textinput.TextIRParsingException
--import uvm.ir.textinput.gen.HAILLexer
--import uvm.ir.textinput.gen.HAILParser
--import uvm.ir.textinput.gen.HAILParser._
-+import antlr4.uvm.ir.textinput.gen.HAILLexer
-+import antlr4.uvm.ir.textinput.gen.HAILParser
-+import antlr4.uvm.ir.textinput.gen.HAILParser._
- import uvm.refimpl._
- import uvm.refimpl.mem.HeaderUtils
- import uvm.refimpl.mem.MemorySupport