fix: move installation dependencies to setup.py

They were previously in pyproject.toml under buil-system, which was not the right way to do this.

.github/workflows/ci.yaml

@@ -22,7 +22,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install pybind11 setuptools numpy
+          python -m pip install pybind11 setuptools
 
       - name: Install
         run: python -m pip install .

pyproject.toml

@@ -3,8 +3,5 @@ requires = [
     "setuptools>=42",
     "wheel",
     "pybind11>=2.6.0",
-    "scipy",
-    "scikit-learn",
-    "numpy"
 ]
 build-backend = "setuptools.build_meta"

setup.py

@@ -13,6 +13,8 @@
     exec(fp.read(), version)
 __version__ = version["__version__"]
 
+install_requires = ["numpy", "scipy", "scikit-learn"]
+
 ext_modules = [
     Pybind11Extension(
         "_sortedl1",
@@ -30,6 +32,7 @@
     url="https://github.com/jolars/sortedl1",
     description="Sorted L-One Penalized Estimation (SLOPE)",
     long_description="",
+    install_requires=install_requires,
     ext_modules=ext_modules,
     cmdclass={"build_ext": build_ext},
     zip_safe=False,