add poetry setup

build.py

@@ -0,0 +1,62 @@
+import sys
+import numpy as np
+from setuptools import setup, Extension
+
+
+def ismac():
+    return sys.platform[:6] == "darwin"
+
+if ismac():
+    compile_flags = ["-O3"]
+    link_args = []
+else:
+    compile_flags = ["-fopenmp", "-O3"]
+    link_args = ["-lgomp"]
+
+extensions = [
+    Extension(
+        name="GPy.kern.src.stationary_cython",
+        sources=[
+            "GPy/kern/src/stationary_cython.pyx",
+            "GPy/kern/src/stationary_utils.c",
+        ],
+        include_dirs=[np.get_include(), "."],
+        extra_compile_args=compile_flags,
+        extra_link_args=link_args,
+    ),
+    Extension(
+        name="GPy.util.choleskies_cython",
+        sources=["GPy/util/choleskies_cython.pyx"],
+        include_dirs=[np.get_include(), "."],
+        extra_link_args=link_args,
+        extra_compile_args=compile_flags,
+    ),
+    Extension(
+        name="GPy.util.linalg_cython",
+        sources=["GPy/util/linalg_cython.pyx"],
+        include_dirs=[np.get_include(), "."],
+        extra_compile_args=compile_flags,
+        extra_link_args=link_args,
+    ),
+    Extension(
+        name="GPy.kern.src.coregionalize_cython",
+        sources=["GPy/kern/src/coregionalize_cython.pyx"],
+        include_dirs=[np.get_include(), "."],
+        extra_compile_args=compile_flags,
+        extra_link_args=link_args,
+    ),
+    Extension(
+        name="GPy.models.state_space_cython",
+        sources=["GPy/models/state_space_cython.pyx"],
+        include_dirs=[np.get_include(), "."],
+        extra_compile_args=compile_flags,
+        extra_link_args=link_args,
+    ),
+]
+
+def build(setup_kwargs):
+    """Needed for the poetry building interface."""
+    setup_kwargs.update({
+        'ext_modules': extensions,
+        # 'include_dirs': [np.get_include()],
+    })

pyproject.toml

@@ -0,0 +1,45 @@
+[tool.poetry]
+name = "GPy"
+version = "1.13.1"
+description = "The Gaussian Process Toolbox"
+authors = ["GPy Authors <https://github.com/SheffieldML/GPy/graphs/contributors"]
+license = "BSD-3-Clause"
+keywords = ["machine-learning", "gaussian-processes", "kernels"]
+homepage = "https://sheffieldml.github.io/GPy/"
+repository = "https://github.com/SheffieldML/GPy"
+documentation = "https://github.com/SheffieldML/GPy"
+readme = "README.md"
+build = "build.py"
+include = ["build.py"]
+
+[tool.poetry.dependencies]
+python = ">=3.9"
+numpy = "^1.7"
+six = "*"
+paramz = ">=0.9.6"
+cython = "^0.29"
+scipy = ">=1.3.0,<=1.12.0"  # TODO: why this upper bound?
+sphinx = { version = "*", optional = true }
+mpi4py = { version = "*", optional = true }
+ipython = { version = ">=4.0.0", optional = true }
+matplotlib = { version = ">=3.3.4", optional = true }
+plotly = { version = ">=1.8.6", optional = true }
+jupyter_client = { version = ">=4.0.6", optional = true }
+ipywidgets = { version = ">=4.0.3", optional = true }
+ipykernel = { version = ">=4.1.0", optional = true }
+notebook = { version = ">=4.0.5", optional = true }
+
+[tool.poetry.extras]
+docs = ["sphinx"]
+optional = ["mpi4py", "ipython"]
+plotting = ["matplotlib", "plotly"]
+notebook = ["jupyter_client", "ipywidgets", "ipykernel", "notebook"]
+
+[tool.poetry.group.dev.dependencies]
+matplotlib = "^3.9.1"
+pytest = "^8.2.2"
+pods = "^0.1.14"
+
+[build-system]
+requires = ["poetry-core>=1.0.0", "setuptools", "wheel", "numpy", "cython"]
+build-backend = "poetry.core.masonry.api"