Separate backends, install only necessary in CI

Author: APJansen

.github/workflows/build.yml

@@ -17,12 +17,14 @@ jobs:
       uses: packetcoders/action-setup-cache-python-poetry@main
       with:
         python-version: '3.9'
-        install-args: --with dev --with backends
+        install-args: --with dev --with torch
 
     - name: Install groco
       run: poetry install
 
     - name: Generate test coverage
+      env:
+        KERAS_BACKEND: torch
       run: |
         poetry run pytest --cov
         poetry run coverage xml

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
       uses: packetcoders/action-setup-cache-python-poetry@main
       with:
         python-version: ${{ matrix.python-version }}
-        install-args: --with dev --with backends
+        install-args: --with dev --with ${{ matrix.backend }}
 
     - name: Install groco
       run: poetry install

pyproject.toml

@@ -21,13 +21,23 @@ isort = "^5.13.2"
 pre-commit = "^3.6.2"
 Sphinx = "^7.2.6"
 
-[tool.poetry.group.backends]
+[tool.poetry.group.tensorflow]
 optional = true
 
-[tool.poetry.group.backends.dependencies]
+[tool.poetry.group.pytorch]
+optional = true
+
+[tool.poetry.group.jax]
+optional = true
+
+[tool.poetry.group.tensorflow.dependencies]
 tensorflow = "^2.16.1"
-jax = "^0.4.25"
+
+[tool.poetry.group.torch.dependencies]
 torch = "^2.2.1"
+
+[tool.poetry.group.jax.dependencies]
+jax = "^0.4.25"
 jaxlib = "^0.4.25"
 
 [build-system]