update vendored dependencies

src/poetry/core/_vendor/attr/__init__.py

@@ -1,10 +1,13 @@
+# SPDX-License-Identifier: MIT
+
 from __future__ import absolute_import, division, print_function
 
 import sys
 
 from functools import partial
 
 from . import converters, exceptions, filters, setters, validators
+from ._cmp import cmp_using
 from ._config import get_run_validators, set_run_validators
 from ._funcs import asdict, assoc, astuple, evolve, has, resolve_types
 from ._make import (
@@ -21,7 +24,7 @@
 from ._version_info import VersionInfo
 
 
-__version__ = "20.3.0"
+__version__ = "21.4.0"
 __version_info__ = VersionInfo._from_version_string(__version__)
 
 __title__ = "attrs"
@@ -52,6 +55,7 @@
     "attrib",
     "attributes",
     "attrs",
+    "cmp_using",
     "converters",
     "evolve",
     "exceptions",
@@ -71,6 +75,6 @@
 ]
 
 if sys.version_info[:2] >= (3, 6):
-    from ._next_gen import define, field, frozen, mutable
+    from ._next_gen import define, field, frozen, mutable  # noqa: F401
 
-    __all__.extend((define, field, frozen, mutable))
+    __all__.extend(("define", "field", "frozen", "mutable"))

src/poetry/core/_vendor/attr/_cmp.py

@@ -0,0 +1,154 @@
+# SPDX-License-Identifier: MIT
+
+from __future__ import absolute_import, division, print_function
+
+import functools
+
+from ._compat import new_class
+from ._make import _make_ne
+
+
+_operation_names = {"eq": "==", "lt": "<", "le": "<=", "gt": ">", "ge": ">="}
+
+
+def cmp_using(
+    eq=None,
+    lt=None,
+    le=None,
+    gt=None,
+    ge=None,
+    require_same_type=True,
+    class_name="Comparable",
+):
+    """
+    Create a class that can be passed into `attr.ib`'s ``eq``, ``order``, and
+    ``cmp`` arguments to customize field comparison.
+
+    The resulting class will have a full set of ordering methods if
+    at least one of ``{lt, le, gt, ge}`` and ``eq``  are provided.
+
+    :param Optional[callable] eq: `callable` used to evaluate equality
+        of two objects.
+    :param Optional[callable] lt: `callable` used to evaluate whether
+        one object is less than another object.
+    :param Optional[callable] le: `callable` used to evaluate whether
+        one object is less than or equal to another object.
+    :param Optional[callable] gt: `callable` used to evaluate whether
+        one object is greater than another object.
+    :param Optional[callable] ge: `callable` used to evaluate whether
+        one object is greater than or equal to another object.
+
+    :param bool require_same_type: When `True`, equality and ordering methods
+        will return `NotImplemented` if objects are not of the same type.
+
+    :param Optional[str] class_name: Name of class. Defaults to 'Comparable'.
+
+    See `comparison` for more details.
+
+    .. versionadded:: 21.1.0
+    """
+
+    body = {
+        "__slots__": ["value"],
+        "__init__": _make_init(),
+        "_requirements": [],
+        "_is_comparable_to": _is_comparable_to,
+    }
+
+    # Add operations.
+    num_order_functions = 0
+    has_eq_function = False
+
+    if eq is not None:
+        has_eq_function = True
+        body["__eq__"] = _make_operator("eq", eq)
+        body["__ne__"] = _make_ne()
+
+    if lt is not None:
+        num_order_functions += 1
+        body["__lt__"] = _make_operator("lt", lt)
+
+    if le is not None:
+        num_order_functions += 1
+        body["__le__"] = _make_operator("le", le)
+
+    if gt is not None:
+        num_order_functions += 1
+        body["__gt__"] = _make_operator("gt", gt)
+
+    if ge is not None:
+        num_order_functions += 1
+        body["__ge__"] = _make_operator("ge", ge)
+
+    type_ = new_class(class_name, (object,), {}, lambda ns: ns.update(body))
+
+    # Add same type requirement.
+    if require_same_type:
+        type_._requirements.append(_check_same_type)
+
+    # Add total ordering if at least one operation was defined.
+    if 0 < num_order_functions < 4:
+        if not has_eq_function:
+            # functools.total_ordering requires __eq__ to be defined,
+            # so raise early error here to keep a nice stack.
+            raise ValueError(
+                "eq must be define is order to complete ordering from "
+                "lt, le, gt, ge."
+            )
+        type_ = functools.total_ordering(type_)
+
+    return type_
+
+
+def _make_init():
+    """
+    Create __init__ method.
+    """
+
+    def __init__(self, value):
+        """
+        Initialize object with *value*.
+        """
+        self.value = value
+
+    return __init__
+
+
+def _make_operator(name, func):
+    """
+    Create operator method.
+    """
+
+    def method(self, other):
+        if not self._is_comparable_to(other):
+            return NotImplemented
+
+        result = func(self.value, other.value)
+        if result is NotImplemented:
+            return NotImplemented
+
+        return result
+
+    method.__name__ = "__%s__" % (name,)
+    method.__doc__ = "Return a %s b.  Computed by attrs." % (
+        _operation_names[name],
+    )
+
+    return method
+
+
+def _is_comparable_to(self, other):
+    """
+    Check whether `other` is comparable to `self`.
+    """
+    for func in self._requirements:
+        if not func(self, other):
+            return False
+    return True
+
+
+def _check_same_type(self, other):
+    """
+    Return True if *self* and *other* are of the same type, False otherwise.
+    """
+    return other.value.__class__ is self.value.__class__

src/poetry/core/_vendor/attr/_compat.py

@@ -1,16 +1,22 @@
+# SPDX-License-Identifier: MIT
+
 from __future__ import absolute_import, division, print_function
 
 import platform
 import sys
+import threading
 import types
 import warnings
 
 
 PY2 = sys.version_info[0] == 2
 PYPY = platform.python_implementation() == "PyPy"
+PY36 = sys.version_info[:2] >= (3, 6)
+HAS_F_STRINGS = PY36
+PY310 = sys.version_info[:2] >= (3, 10)
 
 
-if PYPY or sys.version_info[:2] >= (3, 6):
+if PYPY or PY36:
     ordered_dict = dict
 else:
     from collections import OrderedDict
@@ -28,6 +34,15 @@
     def isclass(klass):
         return isinstance(klass, (type, types.ClassType))
 
+    def new_class(name, bases, kwds, exec_body):
+        """
+        A minimal stub of types.new_class that we need for make_class.
+        """
+        ns = {}
+        exec_body(ns)
+
+        return type(name, bases, ns)
+
     # TYPE is used in exceptions, repr(int) is different on Python 2 and 3.
     TYPE = "type"
 
@@ -97,7 +112,6 @@ def just_warn(*args, **kw):  # pragma: no cover
         consequences of not setting the cell on Python 2.
         """
 
-
 else:  # Python 3 and later.
     from collections.abc import Mapping, Sequence  # noqa
 
@@ -122,6 +136,8 @@ def isclass(klass):
     def iteritems(d):
         return d.items()
 
+    new_class = types.new_class
+
     def metadata_proxy(d):
         return types.MappingProxyType(dict(d))
 
@@ -229,3 +245,17 @@ def func():
 
 
 set_closure_cell = make_set_closure_cell()
+
+# Thread-local global to track attrs instances which are already being repr'd.
+# This is needed because there is no other (thread-safe) way to pass info
+# about the instances that are already being repr'd through the call stack
+# in order to ensure we don't perform infinite recursion.
+#
+# For instance, if an instance contains a dict which contains that instance,
+# we need to know that we're already repr'ing the outside instance from within
+# the dict's repr() call.
+#
+# This lives here rather than in _make.py so that the functions in _make.py
+# don't have a direct reference to the thread-local in their globals dict.
+# If they have such a reference, it breaks cloudpickle.
+repr_context = threading.local()

src/poetry/core/_vendor/attr/_config.py

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: MIT
+
 from __future__ import absolute_import, division, print_function
 
 
@@ -9,6 +11,10 @@
 def set_run_validators(run):
     """
     Set whether or not validators are run.  By default, they are run.
+
+    .. deprecated:: 21.3.0 It will not be removed, but it also will not be
+        moved to new ``attrs`` namespace. Use `attrs.validators.set_disabled()`
+        instead.
     """
     if not isinstance(run, bool):
         raise TypeError("'run' must be bool.")
@@ -19,5 +25,9 @@ def set_run_validators(run):
 def get_run_validators():
     """
     Return whether or not validators are run.
+
+    .. deprecated:: 21.3.0 It will not be removed, but it also will not be
+        moved to new ``attrs`` namespace. Use `attrs.validators.get_disabled()`
+        instead.
     """
     return _run_validators