use deprecated solver

Author: ClashLuke

.github/workflows/ci.yaml

@@ -29,11 +29,8 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip setuptools wheel
-          python -m pip install --index-url https://download.pytorch.org/whl/cpu "torch>=2.7"
-          python -m pip install "numpy<2.0.0" "scipy>=1.12.0" cython --upgrade
-          python -m pip install --only-binary=:all: "GPy>=1.13.1" "paramz>=0.9.6"
-          python -m pip install "pymoo==0.6.0"
-          python -m pip install -e .[dev] --check-build-dependencies --use-pep517
+          python -m pip install --index-url https://download.pytorch.org/whl/cpu "torch>=2.2"
+          python -m pip install -e .[dev] --check-build-dependencies --use-pep517 --upgrade --upgrade-strategy eager --use-deprecated=legacy-resolver
           python -m pip install pytest
       - name: Run toy model tests
         run: pytest test/test_toy_training.py -q

pyproject.toml

@@ -15,7 +15,7 @@ classifiers = ["Intended Audience :: Developers",
     "Programming Language :: Python :: 3",
 ]
 dependencies = ["opt-einsum>=3.4.0",
-    "torch>=2.7.0",
+    "torch>=2.2,<3.0",
     "numpy<2.0.0",
 ]
 keywords = ["torch",