ci(workflows): add env variables to ensure GitHub Actions runs are deterministic

Author: harryswift01

.github/workflows/daily.yaml

@@ -9,6 +9,13 @@ concurrency:
   group: daily-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  OMP_NUM_THREADS: 1
+  MKL_NUM_THREADS: 1
+  OPENBLAS_NUM_THREADS: 1
+  NUMEXPR_NUM_THREADS: 1
+  PYTHONHASHSEED: 0
+
 jobs:
   unit:
     name: Unit (${{ matrix.os }}, py${{ matrix.python-version }})
@@ -37,4 +44,4 @@ jobs:
           python -m pip install -e .[testing]
 
       - name: Run unit tests
-        run: python -m pytest tests/unit
+        run: python -m pytest tests/unit -n auto --dist=loadscope

.github/workflows/pr.yaml

@@ -7,11 +7,19 @@ concurrency:
   group: pr-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  OMP_NUM_THREADS: 1
+  MKL_NUM_THREADS: 1
+  OPENBLAS_NUM_THREADS: 1
+  NUMEXPR_NUM_THREADS: 1
+  PYTHONHASHSEED: 0
+
 jobs:
   unit:
     name: Unit
     runs-on: ${{ matrix.os }}
     timeout-minutes: 25
+
     strategy:
       fail-fast: false
       matrix:
@@ -33,8 +41,10 @@ jobs:
           python -m pip install --upgrade pip
           python -m pip install -e .[testing]
 
-      - name: Pytest (unit) • ${{ matrix.os }}, ${{ matrix.python-version }}
-        run: python -m pytest tests/unit
+      - name: Run unit tests
+        run: |
+          python -m pytest tests/unit -n auto --dist=loadscope
+
 
   discover-systems:
     name: Discover regression systems
@@ -63,6 +73,7 @@ jobs:
           SYSTEMS=$(python -m tests.regression.list_systems)
           echo "systems=$SYSTEMS" >> $GITHUB_OUTPUT
 
+
   regression-quick:
     name: Regression (fast) • ${{ matrix.system }}
     needs: [unit, discover-systems]
@@ -95,13 +106,13 @@ jobs:
           python -m pip install --upgrade pip
           python -m pip install -e .[testing]
 
-      - name: Run fast regression tests (per system)
+      - name: Run fast regression tests (parallel)
         run: |
           python -m pytest tests/regression \
             -m "not slow" \
+            -k "${{ matrix.system }}" \
             -n auto \
             --dist=loadscope \
-            -k "${{ matrix.system }}" \
             -vv \
             --durations=20
 
@@ -114,6 +125,7 @@ jobs:
             .testdata/**
             /tmp/pytest-of-*/pytest-*/**
 
+
   docs:
     name: Docs
     needs: unit
@@ -147,6 +159,7 @@ jobs:
           name: docs-html
           path: docs/_build/html
 
+
   pre-commit:
     name: Pre-commit
     runs-on: ubuntu-24.04
@@ -176,6 +189,7 @@ jobs:
             exit 1
           }
 
+
   coverage:
     name: Coverage
     needs: unit
@@ -203,6 +217,8 @@ jobs:
             --cov CodeEntropy \
             --cov-report term-missing \
             --cov-report xml \
+            -n auto \
+            --dist=loadscope \
             -q
 
       - name: Upload coverage to Coveralls

.github/workflows/weekly-regression.yaml

@@ -9,6 +9,13 @@ concurrency:
   group: weekly-regression-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  OMP_NUM_THREADS: 1
+  MKL_NUM_THREADS: 1
+  OPENBLAS_NUM_THREADS: 1
+  NUMEXPR_NUM_THREADS: 1
+  PYTHONHASHSEED: 0
+
 jobs:
   discover:
     name: Discover regression systems