sagemathgh-37099: GH Actions: Build platform-independent wheels of sagemath-environment, sage-setup, sage-sws2rst for PyPI
    
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We already build platform wheels for
**sagemath-{objects,categories,repl}** for PyPI using cibuildwheel.
Here we add building of platform-independent wheels for **sagemath-
environment** and **sage-setup** and **sage-sws2rst** to the GH Actions
workflow. (They are needed, for example, for pyodide / jupyterlite.)

To test locally: `make pypi-noarch-wheels`

We also update actions/upload-artifact, actions/download-artifact to v4.
This requires a restructuring, as we can no longer upload the wheels for
different architectures (built by separate matrix jobs) to the same
artifact: https://github.com/actions/upload-artifact?tab=readme-ov-
file#not-uploading-to-the-same-artifact
Instead we upload them as separate artifacts and deploy them to PyPI
directly from the job that built them.

This is:
- part of sagemath#31251

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### ⌛ Dependencies

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URL: sagemath#37099
Reported by: Matthias Köppe
Reviewer(s): Kwankyu Lee, Matthias Köppe

Author: Release Manager

.github/workflows/dist.yml

@@ -47,7 +47,7 @@ jobs:
           ./configure && make dist
         env:
           MAKE: make -j8
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         if: success() || failure()
         with:
           path: |
@@ -61,7 +61,7 @@ jobs:
     runs-on: ubuntu-latest
     if: (success() || failure()) && github.repository == 'sagemath/sage' && startsWith(github.ref, 'refs/tags/') && !contains(github.ref, 'beta') && !contains(github.ref, 'rc')
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: release_dist
       - uses: softprops/action-gh-release@v1
@@ -91,7 +91,7 @@ jobs:
           make pypi-sdists V=0
           (mkdir dist && mv upstream/sage*.tar.gz dist/)
           ls -l dist
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           path: "dist/*.tar.gz"
           name: dist
@@ -103,6 +103,36 @@ jobs:
           verbose: true
         if: env.CAN_DEPLOY == 'true'
 
+  noarch_wheels_for_pypi:
+
+    runs-on: ubuntu-latest
+    env:
+      CAN_DEPLOY: ${{ secrets.SAGEMATH_PYPI_API_TOKEN != '' }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install bootstrap prerequisites
+        run: |
+          sudo DEBIAN_FRONTEND=noninteractive apt-get update
+          sudo DEBIAN_FRONTEND=noninteractive apt-get install $(build/bin/sage-get-system-packages debian _bootstrap)
+      - name: make pypi-noarch-wheels
+        run: |
+          ./bootstrap
+          ./configure
+          make pypi-noarch-wheels V=0
+          (mkdir dist && mv venv/var/lib/sage/wheels/sage*-none-any.whl dist/)
+          ls -l dist
+      - uses: actions/upload-artifact@v4
+        with:
+          path: "dist/*.whl"
+          name: noarch-wheels
+      - uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.SAGEMATH_PYPI_API_TOKEN }}
+          skip-existing: true
+          verbose: true
+        if: env.CAN_DEPLOY == 'true'
+
   build_wheels:
     name: Build wheels on ${{ matrix.os }}, arch ${{ matrix.arch }}
     runs-on: ${{ matrix.os }}
@@ -120,6 +150,7 @@ jobs:
           - os: macos-14
             arch: arm64
     env:
+      CAN_DEPLOY: ${{ secrets.SAGEMATH_PYPI_API_TOKEN != '' }}
       # SPKGs to install as system packages
       SPKGS: _bootstrap _prereq
       # Non-Python packages to install as spkgs
@@ -138,7 +169,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: dist
           path: dist
@@ -170,23 +201,11 @@ jobs:
               "${{ steps.python.outputs.python-path }}" -m pipx run cibuildwheel==2.17.0 unpacked/$pkg*
           done
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
-          name: wheels
+          name: ${{ matrix.os }}-${{ matrix.arch }}-wheels
           path: ./wheelhouse/*.whl
 
-  upload_wheels:
-    needs: build_wheels
-    runs-on: ubuntu-latest
-    env:
-      CAN_DEPLOY: ${{ secrets.SAGEMATH_PYPI_API_TOKEN != '' }}
-    steps:
-
-      - uses: actions/download-artifact@v3
-        with:
-          name: wheels
-          path: wheelhouse
-
       - uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: __token__

build/make/Makefile.in

@@ -128,11 +128,14 @@ PIP_PACKAGES = @SAGE_PIP_PACKAGES@
 # Packages that use the 'script' package build rules
 SCRIPT_PACKAGES = @SAGE_SCRIPT_PACKAGES@
 
-# Packages for which we build wheels for PyPI
-PYPI_WHEEL_PACKAGES =				\
+# Packages for which we build platform-independent wheels for PyPI
+PYPI_NOARCH_WHEEL_PACKAGES =			\
 	sage_sws2rst				\
 	sage_setup				\
 	sagemath_environment			\
+
+# Packages for which we build wheels for PyPI
+PYPI_WHEEL_PACKAGES = $(PYPI_NOARCH_WHEEL_PACKAGES) \
 	sagemath_objects			\
 	sagemath_repl				\
 	sagemath_categories			\
@@ -220,7 +223,7 @@ SAGE_I_TARGETS = sagelib doc
 # Tell make not to look for files with these names:
 .PHONY: all all-sage all-toolchain all-build all-sageruntime \
 	all-start build-start base toolchain toolchain-deps base-toolchain \
-	pypi-sdists pypi-wheels wheels \
+	pypi-sdists pypi-noarch-wheels pypi-wheels wheels \
 	sagelib \
 	doc doc-html doc-html-jsmath doc-html-mathjax doc-pdf \
 	doc-uninstall \
@@ -453,6 +456,13 @@ pypi-sdists: $(PYPI_SDIST_PACKAGES:%=%-sdist)
 # Ensuring wheels are present, even for packages that may have been installed
 # as editable. Until we have better uninstallation of script packages, we
 # just remove the timestamps, which will lead to rebuilds of the packages.
+pypi-noarch-wheels:
+	for a in $(PYPI_NOARCH_WHEEL_PACKAGES); do \
+	    rm -f $(SAGE_VENV)/var/lib/sage/installed/$$a-*; \
+	done
+	$(MAKE_REC) SAGE_EDITABLE=no SAGE_WHEELS=yes $(PYPI_NOARCH_WHEEL_PACKAGES)
+	@echo "Built wheels are in venv/var/lib/sage/wheels/"
+
 pypi-wheels:
 	for a in $(PYPI_WHEEL_PACKAGES); do \
 	    rm -f $(SAGE_VENV)/var/lib/sage/installed/$$a-*; \