diff --git a/toolshed/conda_create_for_pathfinder_testing.ps1 b/toolshed/conda_create_for_pathfinder_testing.ps1
index 115720f6e5e..fbdbb5a0362 100644
--- a/toolshed/conda_create_for_pathfinder_testing.ps1
+++ b/toolshed/conda_create_for_pathfinder_testing.ps1
@@ -1,31 +1,30 @@
-# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION
+# SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION
 # SPDX-License-Identifier: Apache-2.0
 
 param(
-    [Parameter(Mandatory = $true)]
-    [string]$CudaVersion
+    [Parameter(Mandatory = $true, Position = 0)]
+    [string]$PythonMajorMinor,
+    [Parameter(Mandatory = $true, Position = 1)]
+    [string]$CudaMajorMinorPatch
 )
 
 $ErrorActionPreference = "Stop"
+Set-StrictMode -Version Latest
 
 & "$env:CONDA_EXE" "shell.powershell" "hook" | Out-String | Invoke-Expression
 
-conda create --yes -n "pathfinder_testing_cu$CudaVersion" python=3.13 "cuda-toolkit=$CudaVersion"
-conda activate "pathfinder_testing_cu$CudaVersion"
+conda create --yes -n "pathfinder_testing_cu$CudaMajorMinorPatch" "python=$PythonMajorMinor" "cuda-toolkit=$CudaMajorMinorPatch"
+conda activate "pathfinder_testing_cu$CudaMajorMinorPatch"
 
+# Keep this list aligned with the Windows-installable subset of
+# cuda_pathfinder/pyproject.toml.
 $cpkgs = @(
     "cusparselt-dev",
     "cutensor",
-    "libcublasmp-dev",
+    "cutlass",
     "libcudss-dev",
-    "libcufftmp-dev",
-    "libmathdx-dev",
-    "libnvshmem3",
-    "libnvshmem-dev",
-    "libnvpl-fft-dev"
+    "libmathdx-dev"
 )
 
-foreach ($cpkg in $cpkgs) {
-    Write-Host "CONDA INSTALL: $cpkg"
-    conda install -y -c conda-forge $cpkg
-}
+Write-Host "CONDA INSTALL: $($cpkgs -join ' ')"
+conda install -y -c conda-forge @cpkgs
diff --git a/toolshed/conda_create_for_pathfinder_testing.sh b/toolshed/conda_create_for_pathfinder_testing.sh
index 1ed57e6765b..69844904921 100755
--- a/toolshed/conda_create_for_pathfinder_testing.sh
+++ b/toolshed/conda_create_for_pathfinder_testing.sh
@@ -1,28 +1,51 @@
 #!/bin/bash
 
-# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-if [[ $# -ne 1 ]]; then
-    echo "Usage: $(basename "$0") ctk-major-minor-patch" 1>&2
+set -euo pipefail
+
+if [[ $# -ne 2 ]]; then
+    echo "Usage: $(basename "$0") python_major_minor cuda_major_minor_patch" 1>&2
     exit 1
 fi
 
+python_major_minor="$1"
+cuda_major_minor_patch="$2"
+cuda_major="${cuda_major_minor_patch%%.*}"
+uname_m="$(uname -m)"
+
 eval "$(conda shell.bash hook)"
 
-conda create --yes -n "pathfinder_testing_cu$1" python=3.13 cuda-toolkit="$1"
-conda activate "pathfinder_testing_cu$1"
-
-for cpkg in \
-    cusparselt-dev \
-    cutensor \
-    libcublasmp-dev \
-    libcudss-dev \
-    libcufftmp-dev \
-    libmathdx-dev \
-    libnvshmem3 \
-    libnvshmem-dev \
-    libnvpl-fft-dev; do
-    echo "CONDA INSTALL: $cpkg"
-    conda install -y -c conda-forge "$cpkg"
-done
+conda create --yes -n "pathfinder_testing_cu$cuda_major_minor_patch" "python=$python_major_minor" cuda-toolkit="$cuda_major_minor_patch"
+set +u
+conda activate "pathfinder_testing_cu$cuda_major_minor_patch"
+set -u
+
+# Keep this list aligned with the Linux-installable subset of
+# cuda_pathfinder/pyproject.toml.
+cpkgs=(
+    "cusparselt-dev"
+    "cutensor"
+    "cutlass"
+    "libcublasmp-dev"
+    "libcudss-dev"
+    "libcufftmp-dev"
+    "libcusolvermp-dev"
+    "libmathdx-dev"
+    "libnvshmem3"
+    "libnvshmem-dev"
+)
+
+# Keep the conda environment aligned with platform-scoped pyproject groups.
+if [[ "$uname_m" == "aarch64" ]]; then
+    cpkgs+=("libnvpl-fft-dev")
+    if (( cuda_major >= 13 )); then
+        cpkgs+=("libcudla-dev")
+    fi
+fi
+
+echo "CONDA INSTALL: ${cpkgs[*]}"
+set +u
+conda install -y -c conda-forge "${cpkgs[@]}"
+set -u