Add monkey patched fairseq package to run on python 3.11 (what is needed for our use of RVC at least)

modules/voice_conversion/fairseq/data/text_compressor.py

@@ -0,0 +1,58 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from enum import Enum
+
+
+class TextCompressionLevel(Enum):
+    none = 0
+    low = 1
+    high = 2
+
+
+class TextCompressor(object):
+    def __init__(
+        self, level: TextCompressionLevel, max_input_byte_length: int = 2**16
+    ):
+        self.level = level
+        self.max_input_length = max_input_byte_length
+
+    def compress(self, text: str) -> bytes:
+        if self.level == TextCompressionLevel.low:
+            import zlib
+
+            # zlib: built-in, fast
+            return zlib.compress(text.encode(), level=0)
+        elif self.level == TextCompressionLevel.high:
+            try:
+                import unishox2
+
+                # unishox2: optimized for short text but slower
+            except ImportError:
+                raise ImportError(
+                    "Please install unishox2 for the text compression feature: "
+                    "pip install unishox2-py3"
+                )
+            assert len(text.encode()) <= self.max_input_length
+            return unishox2.compress(text)[0]
+        else:
+            return text.encode()
+
+    def decompress(self, compressed: bytes) -> str:
+        if self.level == TextCompressionLevel.low:
+            import zlib
+
+            return zlib.decompress(compressed).decode()
+        elif self.level == TextCompressionLevel.high:
+            try:
+                import unishox2
+            except ImportError:
+                raise ImportError(
+                    "Please install unishox2 for the text compression feature: "
+                    "pip install unishox2-py3"
+                )
+            return unishox2.decompress(compressed, self.max_input_length)
+        else:
+            return compressed.decode()