From 2b56159ee6a8f9c5553557dbc2f9d9a1d854d383 Mon Sep 17 00:00:00 2001
From: Alexandru Fikl <alexfikl@gmail.com>
Date: Sun, 22 Feb 2026 14:10:00 +0200
Subject: [PATCH 1/2] feat: add more constantdict to kernel_arguments

---
 pytential/linalg/direct_solver_symbolic.py |  7 ++++---
 pytential/symbolic/mappers.py              |  4 ++--
 pytential/symbolic/primitives.py           | 14 +++++++++++---
 3 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/pytential/linalg/direct_solver_symbolic.py b/pytential/linalg/direct_solver_symbolic.py
index 5b88a8bea..c0893e83c 100644
--- a/pytential/linalg/direct_solver_symbolic.py
+++ b/pytential/linalg/direct_solver_symbolic.py
@@ -25,6 +25,7 @@
 
 from typing import TYPE_CHECKING
 
+from constantdict import constantdict
 from typing_extensions import override
 
 from pymbolic.geometric_algebra import componentwise
@@ -137,7 +138,7 @@ def map_int_g(self, expr: IntG) -> IntG:
                        target_kernel=target_kernel,
                        source_kernels=source_kernels,
                        densities=self.rec(expr.densities),
-                       kernel_arguments=kernel_arguments)
+                       kernel_arguments=constantdict(kernel_arguments))
 
 # }}}
 
@@ -234,10 +235,10 @@ def map_int_g(self,
                 densities=tuple(self.rec_arith(d) for d in expr.densities),
                 qbx_forced_limit=expr.qbx_forced_limit,
                 source=self.default_source, target=self.default_target,
-                kernel_arguments={
+                kernel_arguments=constantdict({
                     name: componentwise(self.rec_arith, arg_expr)
                     for name, arg_expr in expr.kernel_arguments.items()
-                    }
+                    })
                 )
 
 
diff --git a/pytential/symbolic/mappers.py b/pytential/symbolic/mappers.py
index 3a0842fd0..d437b9113 100644
--- a/pytential/symbolic/mappers.py
+++ b/pytential/symbolic/mappers.py
@@ -729,10 +729,10 @@ def map_int_g(self, expr: pp.IntG):
             expr,
             qbx_forced_limit=None,
             densities=self.rec(expr.densities),
-            kernel_arguments={
+            kernel_arguments=constantdict({
                 name: componentwise(self.rec_arith, arg_expr)
                 for name, arg_expr in expr.kernel_arguments.items()
-            }
+            })
         )
 
 # }}}
diff --git a/pytential/symbolic/primitives.py b/pytential/symbolic/primitives.py
index 7389f8adf..ccc4ec2d4 100644
--- a/pytential/symbolic/primitives.py
+++ b/pytential/symbolic/primitives.py
@@ -1938,10 +1938,16 @@ def __init__(
             **kwargs: Operand
             ) -> None:
         if kernel_arguments is None:
-            kernel_arguments = {}
+            kernel_arguments = constantdict({})
 
         if isinstance(kernel_arguments, tuple):
-            kernel_arguments = dict(kernel_arguments)
+            kernel_arguments = constantdict(kernel_arguments)
+
+        if source is None:
+            source = DEFAULT_DOFDESC
+
+        if target is None:
+            target = DEFAULT_DOFDESC
 
         if kwargs:
             warn(f"Passing named '**kwargs' to {type(self).__name__!r} is "
@@ -1949,13 +1955,15 @@ def __init__(
                  "'kernel_arguments' argument instead.",
                  DeprecationWarning, stacklevel=2)
 
-            kernel_arguments = kernel_arguments.copy()
+            kernel_arguments = dict(kernel_arguments)
             for name, value in kwargs.items():
                 if name in kernel_arguments:
                     raise ValueError(f"'{name}' already set in 'kernel_arguments'")
 
                 kernel_arguments[name] = value
 
+            kernel_arguments = constantdict(kernel_arguments)
+
         object.__setattr__(self, "target_kernel", target_kernel)
         object.__setattr__(self, "source_kernels", source_kernels)
         object.__setattr__(self, "densities", densities)

From 7ff01f6dc68fecae08e04c372d33fd8e20f77296 Mon Sep 17 00:00:00 2001
From: Alexandru Fikl <alexfikl@gmail.com>
Date: Sun, 22 Feb 2026 15:06:55 +0200
Subject: [PATCH 2/2] chore: update baseline

---
 .basedpyright/baseline.json | 40 ++++++++++++++++++-------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/.basedpyright/baseline.json b/.basedpyright/baseline.json
index 70e926c43..14bd3a204 100644
--- a/.basedpyright/baseline.json
+++ b/.basedpyright/baseline.json
@@ -12538,7 +12538,7 @@
                 }
             },
             {
-                "code": "reportUnknownVariableType",
+                "code": "reportAny",
                 "range": {
                     "startColumn": 12,
                     "endColumn": 35,
@@ -12602,7 +12602,7 @@
                 }
             },
             {
-                "code": "reportUnknownArgumentType",
+                "code": "reportAny",
                 "range": {
                     "startColumn": 34,
                     "endColumn": 57,
@@ -12706,7 +12706,7 @@
                 }
             },
             {
-                "code": "reportUnknownVariableType",
+                "code": "reportAny",
                 "range": {
                     "startColumn": 12,
                     "endColumn": 35,
@@ -12754,7 +12754,7 @@
                 }
             },
             {
-                "code": "reportUnknownArgumentType",
+                "code": "reportAny",
                 "range": {
                     "startColumn": 37,
                     "endColumn": 60,
@@ -18943,14 +18943,6 @@
                     "lineCount": 1
                 }
             },
-            {
-                "code": "reportIncompatibleMethodOverride",
-                "range": {
-                    "startColumn": 8,
-                    "endColumn": 18,
-                    "lineCount": 1
-                }
-            },
             {
                 "code": "reportImplicitOverride",
                 "range": {
@@ -19367,14 +19359,6 @@
                     "lineCount": 1
                 }
             },
-            {
-                "code": "reportIncompatibleMethodOverride",
-                "range": {
-                    "startColumn": 8,
-                    "endColumn": 18,
-                    "lineCount": 1
-                }
-            },
             {
                 "code": "reportImplicitOverride",
                 "range": {
@@ -29601,6 +29585,14 @@
                     "lineCount": 1
                 }
             },
+            {
+                "code": "reportAbstractUsage",
+                "range": {
+                    "startColumn": 19,
+                    "endColumn": 18,
+                    "lineCount": 4
+                }
+            },
             {
                 "code": "reportCallIssue",
                 "range": {
@@ -29729,6 +29721,14 @@
                     "lineCount": 1
                 }
             },
+            {
+                "code": "reportAbstractUsage",
+                "range": {
+                    "startColumn": 19,
+                    "endColumn": 18,
+                    "lineCount": 4
+                }
+            },
             {
                 "code": "reportCallIssue",
                 "range": {