Switch from pyrsistent to immutabledict

.test-conda-env-py3.yml

@@ -14,7 +14,6 @@ dependencies:
 - python=3
 - python-symengine
 - pyfmmlib
-- pyrsistent
 - pyvkfft
 - mpi4py
 

requirements.txt

@@ -1,6 +1,6 @@
 numpy
 sympy
-pyrsistent
+immutabledict
 pyvkfft
 
 # used in mpi-based tests

setup.py

@@ -111,7 +111,7 @@ def write_git_revision(package_name):
         "loopy>=2021.1",
         "boxtree>=2018.1",
         "arraycontext",
-        "pyrsistent>=0.16.0",
+        "immutabledict",
         "sympy>=0.7.2",
         "pymbolic>=2021.1",
         "pyvkfft>=2022.1",

sumpy/expansion/diff_op.py

@@ -33,7 +33,7 @@
 import numpy as np
 import sympy as sp
 import sympy.polys.agca.modules as sp_modules
-from pyrsistent import pmap
+from immutabledict import immutabledict
 
 from pytools import memoize
 
@@ -110,12 +110,12 @@ def order(self) -> int:
         return deg
 
     def __mul__(self, param: Number_ish) -> LinearPDESystemOperator:
-        eqs = []
+        eqs: list[Mapping[DerivativeIdentifier, sp.Expr]] = []
         for eq in self.eqs:
             deriv_ident_to_coeff = {}
             for k, v in eq.items():
                 deriv_ident_to_coeff[k] = v * param
-            eqs.append(pmap(deriv_ident_to_coeff))
+            eqs.append(immutabledict(deriv_ident_to_coeff))
         return LinearPDESystemOperator(self.dim, tuple(eqs))
 
     __rmul__ = __mul__
@@ -125,15 +125,15 @@ def __add__(
             ) -> LinearPDESystemOperator:
         assert self.dim == other_diff_op.dim
         assert len(self.eqs) == len(other_diff_op.eqs)
-        eqs = []
+        eqs: list[Mapping[DerivativeIdentifier, sp.Expr]] = []
         for eq, other_eq in zip(self.eqs, other_diff_op.eqs):
             res = dict(eq)
             for k, v in other_eq.items():
                 if k in res:
                     res[k] += v
                 else:
                     res[k] = v
-            eqs.append(pmap(res))
+            eqs.append(immutabledict(res))
         return LinearPDESystemOperator(self.dim, tuple(eqs))
 
     __radd__ = __add__
@@ -272,7 +272,7 @@ def intersect(
             DerivativeIdentifier(mi, 0): sym.sympify(coeff.as_expr().simplify()) for
             (mi, coeff) in zip(scalar_pde.monoms(), scalar_pde.coeffs())
         }
-        results.append(LinearPDESystemOperator(pde.dim, (pmap(pde_dict),)))
+        results.append(LinearPDESystemOperator(pde.dim, (immutabledict(pde_dict),)))
 
     return results
 
@@ -351,7 +351,7 @@ def as_scalar_pde(pde: LinearPDESystemOperator, comp_idx: int) \
 def laplacian(diff_op: LinearPDESystemOperator) -> LinearPDESystemOperator:
     dim = diff_op.dim
     empty: tuple[Mapping[DerivativeIdentifier, sp.Expr], ...] = \
-        (pmap(),) * len(diff_op.eqs)
+        (immutabledict(),) * len(diff_op.eqs)
     res = LinearPDESystemOperator(dim, empty)
     for j in range(dim):
         mi = [0]*diff_op.total_dims
@@ -363,19 +363,19 @@ def laplacian(diff_op: LinearPDESystemOperator) -> LinearPDESystemOperator:
 def diff(
             diff_op: LinearPDESystemOperator, mi: tuple[int, ...]
         ) -> LinearPDESystemOperator:
-    eqs = []
+    eqs: list[Mapping[DerivativeIdentifier, sp.Expr]] = []
     for eq in diff_op.eqs:
         res = {}
         for deriv_ident, v in eq.items():
             new_mi = add_mi(deriv_ident.mi, mi)
             res[DerivativeIdentifier(new_mi, deriv_ident.vec_idx)] = v
-        eqs.append(pmap(res))
+        eqs.append(immutabledict(res))
     return LinearPDESystemOperator(diff_op.dim, tuple(eqs))
 
 
 def divergence(diff_op: LinearPDESystemOperator) -> LinearPDESystemOperator:
     assert len(diff_op.eqs) == diff_op.dim
-    res = LinearPDESystemOperator(diff_op.dim, (pmap(),))
+    res = LinearPDESystemOperator(diff_op.dim, (immutabledict(),))
     for i in range(diff_op.dim):
         mi = [0]*diff_op.total_dims
         mi[i] = 1
@@ -439,7 +439,6 @@ def make_identity_diff_op(
         mi = tuple([0]*(ninput + 1))
     else:
         mi = tuple([0]*ninput)
-    eqs = tuple(pmap(
+    return LinearPDESystemOperator(ninput, tuple(immutabledict(
                     {DerivativeIdentifier(mi, i): sp.sympify(1)})
-                    for i in range(noutput))
-    return LinearPDESystemOperator(ninput, eqs)
+                    for i in range(noutput)))