remove setup.py

.github/workflows/ubuntu.yml

@@ -104,7 +104,7 @@ jobs:
             python -m pip install --user --upgrade setuptools wheel 
             python -m pip install --user -r requirements/development.txt
             # For sdist validation
-            python -m pip install --user --upgrade twine
+            python -m pip install --user --upgrade twine build
 
       # Needed so that we don't affect building any pip dependencies with these flags
       - name: Set CPPFLAGS for C++ builds
@@ -147,14 +147,13 @@ jobs:
 
       - name: Validate the sdist
         run: |
-            python setup.py sdist
-            python setup.py check
+            python -m build -s .
+            #python setup.py check
             python -m twine check dist/*.tar.gz
             rm -rf dist/*.tar.gz
 
       - name: Test pip install from dist in fresh venv
         run: |
-            python -m pip install build
             python -m build -o dist -w .
             cd dist
             python -m venv venv

.github/workflows/wheels.yml

@@ -32,8 +32,8 @@ jobs:
       - name: Build sdist
         shell: bash
         run: |
-          python -m pip install --upgrade pip setuptools
-          python setup.py sdist
+          python -m pip install --upgrade pip build
+          python -m build -s .
 
       - name: Upload sdist
         uses: actions/upload-artifact@v4

doc/misc/changelog.md

@@ -18,6 +18,8 @@ Build system
   PR {pr}`1284`
 * Remove boutique arguments from `setup.py`.
   PR {pr}`1288`
+* Remove `setup.py`.
+  PR {pr}`1291`
 
 CI and deployment