diff --git a/cuda_core/pixi.lock b/cuda_core/pixi.lock
index 16a0d2460f..f818f586da 100644
--- a/cuda_core/pixi.lock
+++ b/cuda_core/pixi.lock
@@ -1051,7 +1051,7 @@ packages:
   timestamp: 1764878612030
 - conda: .
   name: cuda-core
-  version: 0.4.2
+  version: 0.5.0
   build: py314h59f3c06_0
   subdir: linux-64
   variants:
@@ -1068,12 +1068,12 @@ packages:
   - cuda-cudart >=13.1.80,<14.0a0
   license: Apache-2.0
   input:
-    hash: cccb645b22f775570680f1a9a62e415a09774e46645523bbd147226681155628
+    hash: 1ca5e93f36385c628c555ad7ff2bbacd659238db16f10d477ece67c394b562f5
     globs:
     - pyproject.toml
 - conda: .
   name: cuda-core
-  version: 0.4.2
+  version: 0.5.0
   build: py314h625260f_0
   subdir: win-64
   variants:
@@ -1088,12 +1088,12 @@ packages:
   - python_abi 3.14.* *_cp314
   license: Apache-2.0
   input:
-    hash: cccb645b22f775570680f1a9a62e415a09774e46645523bbd147226681155628
+    hash: 1ca5e93f36385c628c555ad7ff2bbacd659238db16f10d477ece67c394b562f5
     globs:
     - pyproject.toml
 - conda: .
   name: cuda-core
-  version: 0.4.2
+  version: 0.5.0
   build: py314ha479ada_0
   subdir: linux-aarch64
   variants:
@@ -1110,7 +1110,7 @@ packages:
   - cuda-cudart >=13.1.80,<14.0a0
   license: Apache-2.0
   input:
-    hash: cccb645b22f775570680f1a9a62e415a09774e46645523bbd147226681155628
+    hash: 1ca5e93f36385c628c555ad7ff2bbacd659238db16f10d477ece67c394b562f5
     globs:
     - pyproject.toml
 - conda: https://conda.anaconda.org/conda-forge/noarch/cuda-crt-dev_linux-64-12.9.86-ha770c72_2.conda
diff --git a/pixi.lock b/pixi.lock
new file mode 100644
index 0000000000..fa9b0c1c11
--- /dev/null
+++ b/pixi.lock
@@ -0,0 +1,21 @@
+version: 6
+environments:
+  cu12:
+    channels:
+    - url: https://conda.anaconda.org/conda-forge/
+    options:
+      pypi-prerelease-mode: if-necessary-or-explicit
+    packages: {}
+  cu13:
+    channels:
+    - url: https://conda.anaconda.org/conda-forge/
+    options:
+      pypi-prerelease-mode: if-necessary-or-explicit
+    packages: {}
+  default:
+    channels:
+    - url: https://conda.anaconda.org/conda-forge/
+    options:
+      pypi-prerelease-mode: if-necessary-or-explicit
+    packages: {}
+packages: []
diff --git a/pixi.toml b/pixi.toml
new file mode 100644
index 0000000000..c85559e8a7
--- /dev/null
+++ b/pixi.toml
@@ -0,0 +1,50 @@
+# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+[workspace]
+channels = ["conda-forge"]
+platforms = ["linux-64", "linux-aarch64", "win-64"]
+
+[feature.cu12.dependencies]
+[feature.cu13.dependencies]
+
+[environments]
+cu12 = { features = ["cu12"] }
+cu13 = { features = ["cu13"] }
+
+[activation.env]
+PIXI_ENVIRONMENT_NAME = "${PIXI_ENVIRONMENT_NAME/default/cu13}"
+
+# Test Tasks
+# Runs tests across all sub-packages: pathfinder → bindings → core (dependency order)
+# Each sub-package has its own pixi.toml; the -e environment propagates via PIXI_ENVIRONMENT_NAME
+#
+# Usage: pixi run test | pixi run -e cu12 test | pixi run -e cu13 test
+[target.linux.tasks.test-pathfinder]
+cmd = [
+    "pixi",
+    "run",
+    "--manifest-path",
+    "$PIXI_PROJECT_ROOT/cuda_pathfinder",
+    "test",
+]
+
+[target.linux.tasks.test-bindings]
+cmd = [
+    "pixi",
+    "run",
+    "--manifest-path",
+    "$PIXI_PROJECT_ROOT/cuda_bindings",
+    "test",
+]
+
+[target.linux.tasks.test-core]
+cmd = ["pixi", "run", "--manifest-path", "$PIXI_PROJECT_ROOT/cuda_core", "test"]
+
+[target.linux.tasks.test]
+depends-on = [
+    { task = "test-pathfinder" },
+    { task = "test-bindings" },
+    { task = "test-core" },
+]