diff --git a/pyproject.toml b/pyproject.toml
index 1204d0418..e75917379 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -120,7 +120,7 @@ ignore_missing_imports = true
 [tool.vendoring]
 destination = "src/poetry/core/_vendor/"
 requirements = "src/poetry/core/_vendor/vendor.txt"
-namespace = ""
+namespace = "poetry.core._vendor"
 
 protected-files = ["vendor.txt"]
 patches-dir = "vendors/patches"
diff --git a/src/poetry/core/__init__.py b/src/poetry/core/__init__.py
index 8a2867f0f..afc8c67a3 100644
--- a/src/poetry/core/__init__.py
+++ b/src/poetry/core/__init__.py
@@ -1,15 +1,6 @@
 from __future__ import annotations
 
-import sys
-
-from pathlib import Path
-
 
 # this cannot presently be replaced with importlib.metadata.version as when building
 # itself, poetry-core is not available as an installed distribution.
 __version__ = "1.9.0"
-
-__vendor_site__ = (Path(__file__).parent / "_vendor").as_posix()
-
-if __vendor_site__ not in sys.path:
-    sys.path.insert(0, __vendor_site__)
diff --git a/src/poetry/core/_vendor/fastjsonschema/__init__.py b/src/poetry/core/_vendor/fastjsonschema/__init__.py
index b0b8849e9..9f9e785e1 100644
--- a/src/poetry/core/_vendor/fastjsonschema/__init__.py
+++ b/src/poetry/core/_vendor/fastjsonschema/__init__.py
@@ -78,7 +78,7 @@
 
 .. code-block:: python
 
-    import fastjsonschema
+    from poetry.core._vendor import fastjsonschema
 
     point_schema = {
         "type": "object",
@@ -132,7 +132,7 @@ def validate(definition, data, handlers={}, formats={}, use_default=True, use_fo
 
     .. code-block:: python
 
-        import fastjsonschema
+        from poetry.core._vendor import fastjsonschema
 
         fastjsonschema.validate({'type': 'string'}, 'hello')
         # same as: compile({'type': 'string'})('hello')
@@ -151,7 +151,7 @@ def compile(definition, handlers={}, formats={}, use_default=True, use_formats=T
 
     .. code-block:: python
 
-        import fastjsonschema
+        from poetry.core._vendor import fastjsonschema
 
         validate = fastjsonschema.compile({'type': 'string'})
         validate('hello')
@@ -224,7 +224,7 @@ def compile_to_code(definition, handlers={}, formats={}, use_default=True, use_f
 
     .. code-block:: python
 
-        import fastjsonschema
+        from poetry.core._vendor import fastjsonschema
 
         code = fastjsonschema.compile_to_code({'type': 'string'})
         with open('your_file.py', 'w') as f:
diff --git a/src/poetry/core/_vendor/lark/ast_utils.py b/src/poetry/core/_vendor/lark/ast_utils.py
index a5460f35d..587627fc4 100644
--- a/src/poetry/core/_vendor/lark/ast_utils.py
+++ b/src/poetry/core/_vendor/lark/ast_utils.py
@@ -6,7 +6,7 @@
 import types
 from typing import Optional, Callable
 
-from lark import Transformer, v_args
+from poetry.core._vendor.lark import Transformer, v_args
 
 class Ast:
     """Abstract class
diff --git a/src/poetry/core/_vendor/lark/load_grammar.py b/src/poetry/core/_vendor/lark/load_grammar.py
index 362a845d2..e9b07e69e 100644
--- a/src/poetry/core/_vendor/lark/load_grammar.py
+++ b/src/poetry/core/_vendor/lark/load_grammar.py
@@ -861,7 +861,7 @@ def __call__(self, base_path: Union[None, str, PackageResource], grammar_path: s
         raise IOError('Cannot find grammar in given paths') from err
 
 
-stdlib_loader = FromPackageLoader('lark', IMPORT_PATHS)
+stdlib_loader = FromPackageLoader('poetry.core._vendor.lark', IMPORT_PATHS)
 
 
 
diff --git a/src/poetry/core/_vendor/lark/parsers/lalr_interactive_parser.py b/src/poetry/core/_vendor/lark/parsers/lalr_interactive_parser.py
index d5a2152f3..9dbb6569e 100644
--- a/src/poetry/core/_vendor/lark/parsers/lalr_interactive_parser.py
+++ b/src/poetry/core/_vendor/lark/parsers/lalr_interactive_parser.py
@@ -4,8 +4,8 @@
 from copy import copy
 import warnings
 
-from lark.exceptions import UnexpectedToken
-from lark.lexer import Token, LexerThread
+from poetry.core._vendor.lark.exceptions import UnexpectedToken
+from poetry.core._vendor.lark.lexer import Token, LexerThread
 
 ###{standalone
 
diff --git a/src/poetry/core/_vendor/lark/parsers/lalr_parser.py b/src/poetry/core/_vendor/lark/parsers/lalr_parser.py
index 6ae2a04fd..65ce55dfa 100644
--- a/src/poetry/core/_vendor/lark/parsers/lalr_parser.py
+++ b/src/poetry/core/_vendor/lark/parsers/lalr_parser.py
@@ -9,7 +9,7 @@
 
 from .lalr_analysis import LALR_Analyzer, IntParseTable, ParseTableBase
 from .lalr_interactive_parser import InteractiveParser
-from lark.exceptions import UnexpectedCharacters, UnexpectedInput, UnexpectedToken
+from poetry.core._vendor.lark.exceptions import UnexpectedCharacters, UnexpectedInput, UnexpectedToken
 from .lalr_parser_state import ParserState, ParseConf
 
 ###{standalone
diff --git a/src/poetry/core/_vendor/lark/parsers/lalr_parser_state.py b/src/poetry/core/_vendor/lark/parsers/lalr_parser_state.py
index 350569769..ae7566d5c 100644
--- a/src/poetry/core/_vendor/lark/parsers/lalr_parser_state.py
+++ b/src/poetry/core/_vendor/lark/parsers/lalr_parser_state.py
@@ -4,7 +4,7 @@
 from ..common import ParserCallbacks
 
 from .lalr_analysis import Shift, ParseTableBase, StateT
-from lark.exceptions import UnexpectedToken
+from poetry.core._vendor.lark.exceptions import UnexpectedToken
 
 ###{standalone
 
diff --git a/src/poetry/core/_vendor/lark/tools/__init__.py b/src/poetry/core/_vendor/lark/tools/__init__.py
index c6995c690..954fdcf0f 100644
--- a/src/poetry/core/_vendor/lark/tools/__init__.py
+++ b/src/poetry/core/_vendor/lark/tools/__init__.py
@@ -5,7 +5,7 @@
 from typing import Optional
 import warnings
 
-from lark import Lark, logger
+from poetry.core._vendor.lark import Lark, logger
 try:
     from interegular import logger as interegular_logger
     has_interegular = True
diff --git a/src/poetry/core/_vendor/lark/tools/nearley.py b/src/poetry/core/_vendor/lark/tools/nearley.py
index 1fc27d565..6c0b3fa82 100644
--- a/src/poetry/core/_vendor/lark/tools/nearley.py
+++ b/src/poetry/core/_vendor/lark/tools/nearley.py
@@ -6,7 +6,7 @@
 import argparse
 
 
-from lark import Lark, Transformer, v_args
+from poetry.core._vendor.lark import Lark, Transformer, v_args
 
 nearley_grammar = r"""
     start: (ruledef|directive)+
diff --git a/src/poetry/core/_vendor/lark/tools/serialize.py b/src/poetry/core/_vendor/lark/tools/serialize.py
index eb28824b7..c993a5f51 100644
--- a/src/poetry/core/_vendor/lark/tools/serialize.py
+++ b/src/poetry/core/_vendor/lark/tools/serialize.py
@@ -1,9 +1,9 @@
 import sys
 import json
 
-from lark.grammar import Rule
-from lark.lexer import TerminalDef
-from lark.tools import lalr_argparser, build_lalr
+from poetry.core._vendor.lark.grammar import Rule
+from poetry.core._vendor.lark.lexer import TerminalDef
+from poetry.core._vendor.lark.tools import lalr_argparser, build_lalr
 
 import argparse
 
diff --git a/src/poetry/core/_vendor/lark/tools/standalone.py b/src/poetry/core/_vendor/lark/tools/standalone.py
index 9940ccbf5..a28b8a645 100644
--- a/src/poetry/core/_vendor/lark/tools/standalone.py
+++ b/src/poetry/core/_vendor/lark/tools/standalone.py
@@ -42,12 +42,12 @@
 from functools import partial
 from argparse import ArgumentParser
 
-import lark
-from lark.tools import lalr_argparser, build_lalr, make_warnings_comments
+from poetry.core._vendor import lark
+from poetry.core._vendor.lark.tools import lalr_argparser, build_lalr, make_warnings_comments
 
 
-from lark.grammar import Rule
-from lark.lexer import TerminalDef
+from poetry.core._vendor.lark.grammar import Rule
+from poetry.core._vendor.lark.lexer import TerminalDef
 
 _dir = path.dirname(__file__)
 _larkdir = path.join(_dir, path.pardir)
diff --git a/src/poetry/core/_vendor/lark/tree.py b/src/poetry/core/_vendor/lark/tree.py
index 438837ebe..258a82a4c 100644
--- a/src/poetry/core/_vendor/lark/tree.py
+++ b/src/poetry/core/_vendor/lark/tree.py
@@ -100,7 +100,7 @@ def __rich__(self, parent:Optional['rich.tree.Tree']=None) -> 'rich.tree.Tree':
         Example:
             ::
                 from rich import print
-                from lark import Tree
+                from poetry.core._vendor.lark import Tree
 
                 tree = Tree('root', ['node1', 'node2'])
                 print(tree)
diff --git a/src/poetry/core/_vendor/lark/tree_templates.py b/src/poetry/core/_vendor/lark/tree_templates.py
index 6ec7323f4..7f4ab6f02 100644
--- a/src/poetry/core/_vendor/lark/tree_templates.py
+++ b/src/poetry/core/_vendor/lark/tree_templates.py
@@ -6,8 +6,8 @@
 
 from typing import Union, Optional, Mapping, Dict, Tuple, Iterator
 
-from lark import Tree, Transformer
-from lark.exceptions import MissingVariableError
+from poetry.core._vendor.lark import Tree, Transformer
+from poetry.core._vendor.lark.exceptions import MissingVariableError
 
 Branch = Union[Tree[str], str]
 TreeOrCode = Union[Tree[str], str]
diff --git a/src/poetry/core/constraints/version/patterns.py b/src/poetry/core/constraints/version/patterns.py
index d1187e55d..438215e76 100644
--- a/src/poetry/core/constraints/version/patterns.py
+++ b/src/poetry/core/constraints/version/patterns.py
@@ -2,7 +2,7 @@
 
 import re
 
-from packaging.version import VERSION_PATTERN
+from poetry.core._vendor.packaging.version import VERSION_PATTERN
 
 
 COMPLETE_VERSION = re.compile(VERSION_PATTERN, re.VERBOSE | re.IGNORECASE)
diff --git a/src/poetry/core/factory.py b/src/poetry/core/factory.py
index 5e74991e3..bb526f251 100644
--- a/src/poetry/core/factory.py
+++ b/src/poetry/core/factory.py
@@ -9,14 +9,14 @@
 from typing import List
 from typing import Union
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 from poetry.core.utils.helpers import combine_unicode
 from poetry.core.utils.helpers import readme_content_type
 
 
 if TYPE_CHECKING:
-    from packaging.utils import NormalizedName
+    from poetry.core._vendor.packaging.utils import NormalizedName
 
     from poetry.core.packages.dependency import Dependency
     from poetry.core.packages.dependency_group import DependencyGroup
diff --git a/src/poetry/core/json/__init__.py b/src/poetry/core/json/__init__.py
index 035dd9066..6bb49e01d 100644
--- a/src/poetry/core/json/__init__.py
+++ b/src/poetry/core/json/__init__.py
@@ -7,9 +7,8 @@
 from typing import TYPE_CHECKING
 from typing import Any
 
-import fastjsonschema
-
-from fastjsonschema.exceptions import JsonSchemaException
+from poetry.core._vendor import fastjsonschema
+from poetry.core._vendor.fastjsonschema.exceptions import JsonSchemaException
 
 
 SCHEMA_DIR = Path(__file__).parent / "schemas"
diff --git a/src/poetry/core/masonry/builders/wheel.py b/src/poetry/core/masonry/builders/wheel.py
index 21cd20387..3febe7dda 100644
--- a/src/poetry/core/masonry/builders/wheel.py
+++ b/src/poetry/core/masonry/builders/wheel.py
@@ -19,7 +19,7 @@
 from typing import TYPE_CHECKING
 from typing import TextIO
 
-import packaging.tags
+import poetry.core._vendor.packaging.tags
 
 from poetry.core import __version__
 from poetry.core.constraints.version import parse_constraint
@@ -34,7 +34,7 @@
 if TYPE_CHECKING:
     from collections.abc import Iterator
 
-    from packaging.utils import NormalizedName
+    from poetry.core._vendor.packaging.utils import NormalizedName
 
     from poetry.core.poetry import Poetry
 
@@ -399,14 +399,14 @@ def _get_sys_tags(self) -> list[str]:
 from pathlib import Path
 
 spec = importlib.util.spec_from_file_location(
-    "packaging", Path(r"{packaging.__file__}")
+    "packaging", Path(r"{poetry.core._vendor.packaging.__file__}")
 )
 
 packaging = importlib.util.module_from_spec(spec)
 sys.modules[spec.name] = packaging
 
 spec = importlib.util.spec_from_file_location(
-    "packaging.tags", Path(r"{packaging.tags.__file__}")
+    "packaging.tags", Path(r"{poetry.core._vendor.packaging.tags.__file__}")
 )
 packaging_tags = importlib.util.module_from_spec(spec)
 spec.loader.exec_module(packaging_tags)
@@ -432,7 +432,7 @@ def tag(self) -> str:
                 # poetry-core is not run in the build environment
                 # -> this is probably not a PEP 517 build but a poetry build
                 return self._get_sys_tags()[0]
-            sys_tag = next(packaging.tags.sys_tags())
+            sys_tag = next(poetry.core._vendor.packaging.tags.sys_tags())
             tag = (sys_tag.interpreter, sys_tag.abi, sys_tag.platform)
         else:
             platform = "any"
diff --git a/src/poetry/core/masonry/metadata.py b/src/poetry/core/masonry/metadata.py
index 0c18c1051..6c31fa8c4 100644
--- a/src/poetry/core/masonry/metadata.py
+++ b/src/poetry/core/masonry/metadata.py
@@ -6,7 +6,7 @@
 
 
 if TYPE_CHECKING:
-    from packaging.utils import NormalizedName
+    from poetry.core._vendor.packaging.utils import NormalizedName
 
     from poetry.core.packages.package import Package
 
diff --git a/src/poetry/core/masonry/utils/helpers.py b/src/poetry/core/masonry/utils/helpers.py
index 2532ed282..2d377fb0b 100644
--- a/src/poetry/core/masonry/utils/helpers.py
+++ b/src/poetry/core/masonry/utils/helpers.py
@@ -6,7 +6,7 @@
 
 
 if TYPE_CHECKING:
-    from packaging.utils import NormalizedName
+    from poetry.core._vendor.packaging.utils import NormalizedName
 
 
 DistributionName = NewType("DistributionName", str)
diff --git a/src/poetry/core/packages/dependency.py b/src/poetry/core/packages/dependency.py
index ef6185e65..64e3dbe05 100644
--- a/src/poetry/core/packages/dependency.py
+++ b/src/poetry/core/packages/dependency.py
@@ -10,7 +10,7 @@
 from typing import Sequence
 from typing import TypeVar
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 from poetry.core.constraints.generic import parse_constraint as parse_generic_constraint
 from poetry.core.constraints.version import parse_constraint
@@ -25,7 +25,7 @@
 if TYPE_CHECKING:
     from collections.abc import Iterable
 
-    from packaging.utils import NormalizedName
+    from poetry.core._vendor.packaging.utils import NormalizedName
 
     from poetry.core.constraints.version import VersionConstraint
     from poetry.core.packages.directory_dependency import DirectoryDependency
diff --git a/src/poetry/core/packages/dependency_group.py b/src/poetry/core/packages/dependency_group.py
index 9afa692e4..9c21fc776 100644
--- a/src/poetry/core/packages/dependency_group.py
+++ b/src/poetry/core/packages/dependency_group.py
@@ -31,7 +31,7 @@ def add_dependency(self, dependency: Dependency) -> None:
         self._dependencies.append(dependency)
 
     def remove_dependency(self, name: str) -> None:
-        from packaging.utils import canonicalize_name
+        from poetry.core._vendor.packaging.utils import canonicalize_name
 
         name = canonicalize_name(name)
 
diff --git a/src/poetry/core/packages/package.py b/src/poetry/core/packages/package.py
index f75dad7b3..63adb92e9 100644
--- a/src/poetry/core/packages/package.py
+++ b/src/poetry/core/packages/package.py
@@ -25,7 +25,7 @@
     from collections.abc import Iterator
     from pathlib import Path
 
-    from packaging.utils import NormalizedName
+    from poetry.core._vendor.packaging.utils import NormalizedName
 
     from poetry.core.constraints.version import Version
     from poetry.core.constraints.version import VersionConstraint
diff --git a/src/poetry/core/packages/specification.py b/src/poetry/core/packages/specification.py
index 995ecf153..22b50a2fb 100644
--- a/src/poetry/core/packages/specification.py
+++ b/src/poetry/core/packages/specification.py
@@ -5,13 +5,13 @@
 from typing import TYPE_CHECKING
 from typing import TypeVar
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 
 if TYPE_CHECKING:
     from collections.abc import Iterable
 
-    from packaging.utils import NormalizedName
+    from poetry.core._vendor.packaging.utils import NormalizedName
 
     T = TypeVar("T", bound="PackageSpecification")
 
@@ -27,7 +27,7 @@ def __init__(
         source_subdirectory: str | None = None,
         features: Iterable[str] | None = None,
     ) -> None:
-        from packaging.utils import canonicalize_name
+        from poetry.core._vendor.packaging.utils import canonicalize_name
 
         # Attributes must be immutable for clone() to be safe!
         # (For performance reasons, clone only creates a copy instead of a deep copy).
diff --git a/src/poetry/core/utils/_compat.py b/src/poetry/core/utils/_compat.py
index c8f45dffe..2b95cf554 100644
--- a/src/poetry/core/utils/_compat.py
+++ b/src/poetry/core/utils/_compat.py
@@ -8,7 +8,7 @@
 
 if sys.version_info < (3, 11):
     # compatibility for python <3.11
-    import tomli as tomllib
+    import poetry.core._vendor.tomli as tomllib
 else:
     import tomllib
 
diff --git a/src/poetry/core/utils/helpers.py b/src/poetry/core/utils/helpers.py
index 7306973f5..72a9b744b 100644
--- a/src/poetry/core/utils/helpers.py
+++ b/src/poetry/core/utils/helpers.py
@@ -13,7 +13,7 @@
 from typing import TYPE_CHECKING
 from typing import Any
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 
 if TYPE_CHECKING:
diff --git a/src/poetry/core/version/markers.py b/src/poetry/core/version/markers.py
index 2001cc384..02c22b570 100644
--- a/src/poetry/core/version/markers.py
+++ b/src/poetry/core/version/markers.py
@@ -13,7 +13,7 @@
 from typing import TypeVar
 from typing import Union
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 from poetry.core.constraints.generic import BaseConstraint
 from poetry.core.constraints.generic import Constraint
@@ -32,7 +32,7 @@
     from collections.abc import Iterable
     from collections.abc import Mapping
 
-    from lark import Tree
+    from poetry.core._vendor.lark import Tree
 
 
 class InvalidMarker(ValueError):
@@ -965,7 +965,7 @@ def parse_marker(marker: str) -> BaseMarker:
 def _compact_markers(
     tree_elements: Tree, tree_prefix: str = "", top_level: bool = True
 ) -> BaseMarker:
-    from lark import Token
+    from poetry.core._vendor.lark import Token
 
     # groups is a disjunction of conjunctions
     # eg [[A, B], [C, D]] represents "(A and B) or (C and D)"
diff --git a/src/poetry/core/version/parser.py b/src/poetry/core/version/parser.py
index 085cfa384..234be0ca3 100644
--- a/src/poetry/core/version/parser.py
+++ b/src/poetry/core/version/parser.py
@@ -7,8 +7,8 @@
 if TYPE_CHECKING:
     from pathlib import Path
 
-    from lark import Lark
-    from lark import Tree
+    from poetry.core._vendor.lark import Lark
+    from poetry.core._vendor.lark import Tree
 
 
 class Parser:
@@ -21,7 +21,7 @@ def __init__(
         self._lark: Lark | None = None
 
     def parse(self, text: str, **kwargs: Any) -> Tree:
-        from lark import Lark
+        from poetry.core._vendor.lark import Lark
 
         if self._lark is None:
             self._lark = Lark.open(
diff --git a/src/poetry/core/version/pep440/parser.py b/src/poetry/core/version/pep440/parser.py
index 914086e13..8363947da 100644
--- a/src/poetry/core/version/pep440/parser.py
+++ b/src/poetry/core/version/pep440/parser.py
@@ -6,7 +6,7 @@
 from typing import TYPE_CHECKING
 from typing import TypeVar
 
-from packaging.version import VERSION_PATTERN
+from poetry.core._vendor.packaging.version import VERSION_PATTERN
 
 from poetry.core.version.exceptions import InvalidVersion
 from poetry.core.version.pep440 import Release
diff --git a/src/poetry/core/version/requirements.py b/src/poetry/core/version/requirements.py
index 8058ade10..a88c2f18f 100644
--- a/src/poetry/core/version/requirements.py
+++ b/src/poetry/core/version/requirements.py
@@ -29,8 +29,8 @@ class Requirement:
     """
 
     def __init__(self, requirement_string: str) -> None:
-        from lark import UnexpectedCharacters
-        from lark import UnexpectedToken
+        from poetry.core._vendor.lark import UnexpectedCharacters
+        from poetry.core._vendor.lark import UnexpectedToken
 
         try:
             parsed = _parser.parse(requirement_string)
diff --git a/tests/masonry/builders/test_sdist.py b/tests/masonry/builders/test_sdist.py
index bd1908450..ef0557348 100644
--- a/tests/masonry/builders/test_sdist.py
+++ b/tests/masonry/builders/test_sdist.py
@@ -14,7 +14,7 @@
 
 import pytest
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 from poetry.core.factory import Factory
 from poetry.core.masonry.builders.sdist import SdistBuilder
diff --git a/tests/packages/test_dependency.py b/tests/packages/test_dependency.py
index eb134f4ee..0cd4ff0ce 100644
--- a/tests/packages/test_dependency.py
+++ b/tests/packages/test_dependency.py
@@ -6,7 +6,7 @@
 
 import pytest
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 from poetry.core.constraints.version.exceptions import ParseConstraintError
 from poetry.core.packages.dependency import Dependency
diff --git a/tests/packages/test_vcs_dependency.py b/tests/packages/test_vcs_dependency.py
index 6b78b874b..a393993b7 100644
--- a/tests/packages/test_vcs_dependency.py
+++ b/tests/packages/test_vcs_dependency.py
@@ -4,7 +4,7 @@
 
 import pytest
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 from poetry.core.packages.vcs_dependency import VCSDependency
 
diff --git a/tests/test_factory.py b/tests/test_factory.py
index 3d34787e2..6e720d6c4 100644
--- a/tests/test_factory.py
+++ b/tests/test_factory.py
@@ -7,7 +7,7 @@
 
 import pytest
 
-from packaging.utils import canonicalize_name
+from poetry.core._vendor.packaging.utils import canonicalize_name
 
 from poetry.core.constraints.version import parse_constraint
 from poetry.core.factory import Factory
diff --git a/vendors/patches/lark.patch b/vendors/patches/lark.patch
new file mode 100644
index 000000000..bae4d5aed
--- /dev/null
+++ b/vendors/patches/lark.patch
@@ -0,0 +1,10 @@
+diff --git a/src/poetry/core/_vendor/lark/load_grammar.py b/src/poetry/core/_vendor/lark/load_grammar.py
+index 362a845..e9b07e6 100644
+--- a/src/poetry/core/_vendor/lark/load_grammar.py
++++ b/src/poetry/core/_vendor/lark/load_grammar.py
+@@ -861,7 +861,7 @@ class FromPackageLoader:
+         raise IOError('Cannot find grammar in given paths') from err
+
+
+-stdlib_loader = FromPackageLoader('lark', IMPORT_PATHS)
++stdlib_loader = FromPackageLoader('poetry.core._vendor.lark', IMPORT_PATHS)