change attrs to dataclasses

.pylintrc-local.yml

@@ -13,3 +13,4 @@
     - too-many-function-args
     - redundant-keyword-arg
     - no-value-for-parameter
+    - invalid-field-call

doc/conf.py

@@ -28,7 +28,6 @@
     "sumpy": ("https://documen.tician.de/sumpy/", None),
     "islpy": ("https://documen.tician.de/islpy/", None),
     "jax": ("https://jax.readthedocs.io/en/latest/", None),
-    "attrs": ("https://www.attrs.org/en/stable/", None),
     "mpi4py": ("https://mpi4py.readthedocs.io/en/latest", None),
     "immutabledict": ("https://immutabledict.corenting.fr/", None),
 }

doc/design.rst

@@ -226,20 +226,15 @@ that relies on memory layout information to do its job is undefined in :mod:`pyt
 At the most basic level, the attribute :attr:`numpy.ndarray.strides` is not available
 on subclasses of :class:`pytato.Array`.
 
-Dataclasses / :mod:`attrs`
---------------------------
+Dataclasses
+-----------
 
 :mod:`dataclasses` helps us reduce most of the boilerplate involved in
-instantiating a new type. However, :mod:`dataclasses` does not support
-keyword-only argument until Python-3.10. To overcome this, we prefer
-:mod:`attrs` which gives us all the required functionality of
-:mod:`dataclasses` and works with Python-3.8.
-
-
+instantiating a new type.
 We have checks in place to avoid developer errors that could happen by using
-the defaults of these libraries. For eg. both :mod:`dataclasses` and
-:mod:`attrs` override the implementation of ``__eq__`` for the class being
-implemented, which could potentially lead lead to an `exponential complex
+the defaults of this library. For example, :mod:`dataclasses` overrides the
+implementation of ``__eq__`` for the class being implemented, which could
+potentially lead to an `exponentially complex
 operation <https://github.com/inducer/pytato/issues/163>`_.
 
 Lessons learned

pyproject.toml

@@ -32,7 +32,6 @@ classifiers = [
     "Topic :: Software Development :: Libraries",
 ]
 dependencies = [
-    "attrs",
     "bidict",
     "immutabledict",
     "loopy>=2020.2",