chia: patch deadlock

pkgs/applications/blockchains/chia/default.nix

@@ -16,6 +16,11 @@ let chia = python3Packages.buildPythonApplication rec {
     hash = "sha256-OlaAnUy16QBff81XMoYQaZA0wKnsr+/3XEQLBP8IMug=";
   };
 
+  patches = [
+    # chia tries to put lock files in the python modules directory
+    ./dont_lock_in_store.patch
+  ];
+
   postPatch = ''
     substituteInPlace setup.py \
       --replace "==" ">="

pkgs/applications/blockchains/chia/dont_lock_in_store.patch

@@ -0,0 +1,21 @@
+--- a/chia/wallet/puzzles/load_clvm.py
++++ b/chia/wallet/puzzles/load_clvm.py
+@@ -82,18 +82,6 @@ def load_serialized_clvm(clvm_filename, package_or_requirement=__name__) -> Seri
+     """
+     hex_filename = f"{clvm_filename}.hex"
+ 
+-    try:
+-        if pkg_resources.resource_exists(package_or_requirement, clvm_filename):
+-            # Establish whether the size is zero on entry
+-            full_path = pathlib.Path(pkg_resources.resource_filename(package_or_requirement, clvm_filename))
+-            output = full_path.parent / hex_filename
+-            compile_clvm(full_path, output, search_paths=[full_path.parent])
+-
+-    except NotImplementedError:
+-        # pyinstaller doesn't support `pkg_resources.resource_exists`
+-        # so we just fall through to loading the hex clvm
+-        pass
+-
+     clvm_hex = pkg_resources.resource_string(package_or_requirement, hex_filename).decode("utf8")
+     assert len(clvm_hex.strip()) != 0
+     clvm_blob = bytes.fromhex(clvm_hex)