From 844cace3d780dfd013eb99816c400e2a6a0944fb Mon Sep 17 00:00:00 2001
From: Francois Lanusse <fr.eiffel@gmail.com>
Date: Sat, 28 Jun 2025 02:41:16 +0200
Subject: [PATCH] adding caching

---
 .github/workflows/formatting.yml | 34 +++++++++++++++++++----
 .github/workflows/tests.yml      | 47 ++++++++++++++++++++++++--------
 2 files changed, 64 insertions(+), 17 deletions(-)

diff --git a/.github/workflows/formatting.yml b/.github/workflows/formatting.yml
index 97cd358..519090f 100644
--- a/.github/workflows/formatting.yml
+++ b/.github/workflows/formatting.yml
@@ -7,15 +7,37 @@ on:
     branches: [ "main" ]
 
 jobs:
-  build:
+  formatting:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
+    - name: Checkout Source
+      uses: actions/checkout@v4
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.11"
+
+    - name: Cache pip dependencies
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-formatting-pip-${{ hashFiles('.pre-commit-config.yaml') }}
+        restore-keys: |
+          ${{ runner.os }}-formatting-pip-
+
+    - name: Cache pre-commit
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pre-commit
+        key: ${{ runner.os }}-pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
+        restore-keys: |
+          ${{ runner.os }}-pre-commit-
+
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip isort
-        python -m pip install pre-commit
+        python -m pip install --upgrade pip
+        python -m pip install pre-commit isort
+
     - name: Run pre-commit
       run: python -m pre_commit run --all-files
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 041d897..d8b995b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,31 +10,55 @@ on:
 
 jobs:
   run_tests:
-
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10" , "3.11" , "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - name: Checkout Source
-      uses: actions/checkout@v2.3.1
+      uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
-    - name: Install dependencies
+    - name: Cache pip dependencies
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('**/requirements-test.txt', '**/pyproject.toml') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-${{ matrix.python-version }}-
+          ${{ runner.os }}-pip-
+
+    - name: Cache system dependencies
+      uses: actions/cache@v4
+      with:
+        path: /var/cache/apt
+        key: ${{ runner.os }}-apt-${{ hashFiles('.github/workflows/tests.yml') }}
+        restore-keys: |
+          ${{ runner.os }}-apt-
+
+    - name: Install system dependencies
       run: |
+        sudo apt-get update
         sudo apt-get install -y libopenmpi-dev
-        python -m pip install --upgrade pip
+
+    - name: Install Python dependencies
+      run: |
+        python -m pip install --upgrade pip setuptools wheel
+        # Install JAX first as it's a key dependency
         pip install jax
-        pip install setuptools cython wheel mpi4py
-        pip install -r requirements-test.txt  --no-build-isolation
-        pip install pytest
-        pip install diffrax
-        pip install .
+        # Install build dependencies
+        pip install setuptools cython mpi4py
+        # Install test requirements with no-build-isolation for faster builds
+        pip install -r requirements-test.txt --no-build-isolation
+        # Install additional test dependencies
+        pip install pytest diffrax
+        # Install package in development mode
+        pip install -e .
         echo "numpy version installed:"
         python -c "import numpy; print(numpy.__version__)"
 
@@ -42,6 +66,7 @@ jobs:
       run: |
         cd tests
         pytest -v -m "not distributed"
+
     - name: Run Distributed tests
       run: |
         pytest -v tests/test_distributed_pm.py