fix environment problems for windows and mac

Author: gauravmanmode

.github/workflows/main.yml

@@ -36,9 +36,17 @@ jobs:
             python=${{ matrix.python-version }}
       - name: run pytest
         shell: bash -l {0}
+        if: runner.os == 'Linux' && matrix.python-version == '3.13'
         run: |
           micromamba activate optimagic
           pytest --cov-report=xml --cov=./
+      - name: run pytest (and install pyensmallen)
+        shell: bash -l {0}
+        if: runner.os == 'Linux' && matrix.python-version < '3.13'
+        run: |
+          micromamba activate optimagic
+          pip install pyensmallen
+          pytest --cov-report=xml --cov=./
       - name: Upload coverage report.
         if: runner.os == 'Linux' && matrix.python-version == '3.10'
         uses: codecov/codecov-action@v4

.tools/envs/testenv-linux.yml

@@ -31,7 +31,6 @@ dependencies:
       - DFO-LS>=1.5.3  # dev, tests
       - Py-BOBYQA  # dev, tests
       - fides==0.7.4  # dev, tests
-      - pyensmallen
       - kaleido  # dev, tests
       - pandas-stubs  # dev, tests
       - types-cffi  # dev, tests

.tools/envs/testenv-numpy.yml

@@ -29,7 +29,6 @@ dependencies:
       - DFO-LS>=1.5.3  # dev, tests
       - Py-BOBYQA  # dev, tests
       - fides==0.7.4  # dev, tests
-      - pyensmallen
       - kaleido  # dev, tests
       - types-cffi  # dev, tests
       - types-openpyxl  # dev, tests

.tools/envs/testenv-others.yml

@@ -29,7 +29,6 @@ dependencies:
       - DFO-LS>=1.5.3  # dev, tests
       - Py-BOBYQA  # dev, tests
       - fides==0.7.4  # dev, tests
-      - pyensmallen
       - kaleido  # dev, tests
       - pandas-stubs  # dev, tests
       - types-cffi  # dev, tests

.tools/envs/testenv-pandas.yml

@@ -29,7 +29,6 @@ dependencies:
       - DFO-LS>=1.5.3  # dev, tests
       - Py-BOBYQA  # dev, tests
       - fides==0.7.4  # dev, tests
-      - pyensmallen
       - kaleido  # dev, tests
       - types-cffi  # dev, tests
       - types-openpyxl  # dev, tests

environment.yml

@@ -40,7 +40,6 @@ dependencies:
       - DFO-LS>=1.5.3  # dev, tests
       - Py-BOBYQA  # dev, tests
       - fides==0.7.4  # dev, tests
-      - pyensmallen
       - kaleido  # dev, tests
       - pre-commit>=4  # dev
       - -e .  # dev

pyproject.toml

@@ -16,7 +16,6 @@ dependencies = [
     "sqlalchemy>=1.3",
     "annotated-types",
     "typing-extensions",
-    "pyensmallen",
 ]
 dynamic = ["version"]
 keywords = [

src/optimagic/config.py

@@ -91,6 +91,12 @@
 else:
     IS_NUMBA_INSTALLED = True
 
+try:
+    import pyensmallen  # noqa: F401
+except ImportError:
+    IS_PYENSMALLEN_INSTALLED = False
+else:
+    IS_PYENSMALLEN_INSTALLED = True
 
 # ======================================================================================
 # Check if pandas version is newer or equal to version 2.1.0

src/optimagic/optimizers/pyensmallen_optimizers.py

@@ -3,10 +3,10 @@
 from dataclasses import dataclass
 
 import numpy as np
-import pyensmallen as pye
 from numpy.typing import NDArray
 
 from optimagic import mark
+from optimagic.config import IS_PYENSMALLEN_INSTALLED
 from optimagic.optimization.algo_options import (
     CONVERGENCE_FTOL_REL,
     CONVERGENCE_GTOL_ABS,
@@ -19,6 +19,9 @@
 )
 from optimagic.typing import AggregationLevel, NonNegativeFloat, PositiveInt
 
+if IS_PYENSMALLEN_INSTALLED:
+    import pyensmallen as pye
+
 LIMITED_MEMORY_MAX_HISTORY = 10
 """Number of memory points to be stored (default 10)."""
 MIN_LINE_SEARCH_STEPS = 1e-20
@@ -35,7 +38,7 @@
 @mark.minimizer(
     name="ensmallen_lbfgs",
     solver_type=AggregationLevel.SCALAR,
-    is_available=True,
+    is_available=IS_PYENSMALLEN_INSTALLED,
     is_global=False,
     needs_jac=True,
     needs_hess=False,