diff --git a/.github/workflows/core_test.yml b/.github/workflows/core_test.yml
new file mode 100644
index 0000000..3ac1ebc
--- /dev/null
+++ b/.github/workflows/core_test.yml
@@ -0,0 +1,38 @@
+name: pytest_core
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  test-ubuntu:
+    name: "pytest on ${{ matrix.python-version }} on ${{ matrix.os }}"
+    runs-on: "${{ matrix.os }}"
+    strategy:
+      matrix:
+        python-version: [3.9]
+        os: [ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install essential dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install wheel
+          pip install pytest pytest-xdist
+      - name: Install package
+        run: |
+          pip install -e .
+      - name: Print installed dependencies
+        run: |
+          pip freeze
+      - name: Test with pytest # (TODO: Automate Iris installation)
+        run: |
+          # pytest -n auto iris
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..9dd6f2b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,16 @@
+# Standard packages.
+typing  # Version dependent on Python version.
+pytest  # Use the latest version to match github workflow.
+absl-py>=1.0.0
+
+# Distributed systems libraries.
+dm-launchpad
+
+# Configuration + Experimentation
+ml-collections
+
+# Numerical packages.
+numpy>=1.21.5
+jax  # Use latest version.
+jaxlib  # Use latest version.
+flax  # Use latest version.
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..1343159
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,43 @@
+# Copyright 2024 Google LLC.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Setup for pip package."""
+import setuptools
+
+
+def _strip_comments_from_line(s: str) -> str:
+  """Parses a line of a requirements.txt file."""
+  requirement, *_ = s.split('#')
+  return requirement.strip()
+
+
+def _parse_requirements(requirements_txt_path: str) -> list[str]:
+  """Returns a list of dependencies for setup() from requirements.txt."""
+
+  with open(requirements_txt_path) as fp:
+    # Parse comments.
+    lines = [_strip_comments_from_line(line) for line in fp.read().splitlines()]
+    # Remove empty lines and direct github repos (not allowed in setup.py)
+    return [l for l in lines if (l and 'github.com' not in l)]
+
+
+setuptools.setup(
+    name='google-iris',
+    version='1.0',
+    description='Iris',
+    author='Iris Team',
+    author_email='jaindeepali@google.com',
+    install_requires=_parse_requirements('requirements.txt'),
+    packages=setuptools.find_packages(),
+    )