python3Packages.omegaconf: relax antlr4 version

pkgs/development/python-modules/omegaconf/antlr4.patch

@@ -0,0 +1,13 @@
+diff --git a/build_helpers/build_helpers.py b/build_helpers/build_helpers.py
+index 6419e26..9e6c21c 100644
+--- a/build_helpers/build_helpers.py
++++ b/build_helpers/build_helpers.py
+@@ -30,7 +30,7 @@ class ANTLRCommand(Command):  # type: ignore  # pragma: no cover
+             command = [
+                 "java",
+                 "-jar",
+-                str(build_dir / "bin" / "antlr-4.9.3-complete.jar"),
++                "@antlr_jar@",
+                 "-Dlanguage=Python3",
+                 "-o",
+                 str(project_root / "omegaconf" / "grammar" / "gen"),

pkgs/development/python-modules/omegaconf/default.nix

@@ -1,4 +1,5 @@
 { lib
+, antlr4
 , antlr4-python3-runtime
 , buildPythonPackage
 , fetchFromGitHub
@@ -8,6 +9,7 @@
 , pytestCheckHook
 , pythonOlder
 , pyyaml
+, substituteAll
 }:
 
 buildPythonPackage rec {
@@ -24,6 +26,21 @@ buildPythonPackage rec {
     hash = "sha256-Qxa4uIiX5TAyQ5rFkizdev60S4iVAJ08ES6FpNqf8zI=";
   };
 
+  patches = [
+    (substituteAll {
+      src = ./antlr4.patch;
+      antlr_jar = "${antlr4.out}/share/java/antlr-${antlr4.version}-complete.jar";
+    })
+  ];
+
+  postPatch = ''
+    # We substitute the path to the jar with the one from our antlr4
+    # package, so this file becomes unused
+    rm -v build_helpers/bin/antlr*-complete.jar
+
+    sed -i 's/antlr4-python3-runtime==.*/antlr4-python3-runtime/' requirements/base.txt
+  '';
+
   nativeBuildInputs = [
     jre_minimal
   ];