python3Packages.hydra-core: unpin antlr4-python3-runtime

pkgs/development/python-modules/hydra-core/antlr4.patch

@@ -0,0 +1,13 @@
+diff --git a/build_helpers/build_helpers.py b/build_helpers/build_helpers.py
+index 7159d22615..73db312bbe 100644
+--- a/build_helpers/build_helpers.py
++++ b/build_helpers/build_helpers.py
+@@ -185,7 +185,7 @@ class ANTLRCommand(Command):  # type: ignore
+             command = [
+                 "java",
+                 "-jar",
+-                join(root_dir, "bin/antlr-4.9.3-complete.jar"),
++                "@antlr_jar@",
+                 "-Dlanguage=Python3",
+                 "-o",
+                 join(project_root, "hydra/grammar/gen/"),

pkgs/development/python-modules/hydra-core/default.nix

@@ -1,5 +1,6 @@
 { stdenv
 , lib
+, antlr4
 , antlr4-python3-runtime
 , buildPythonPackage
 , fetchFromGitHub
@@ -8,6 +9,7 @@
 , omegaconf
 , pytestCheckHook
 , pythonOlder
+, substituteAll
 }:
 
 buildPythonPackage rec {
@@ -24,6 +26,21 @@ buildPythonPackage rec {
     hash = "sha256-4FOh1Jr+LM8ffh/xcAqMqKudKbXb2DZdxU+czq2xwxs=";
   };
 
+  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/requirements.txt
+  '';
+
   nativeBuildInputs = [
     jre_headless
   ];