prototype of so-only wheel

.github/workflows/build-wheel-linux.yml

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+# (C) Copyright 2024- ECMWF.
+#
+# This software is licensed under the terms of the Apache Licence Version 2.0
+# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+# In applying this licence, ECMWF does not waive the privileges and immunities
+# granted to it by virtue of its status as an intergovernmental organisation
+# nor does it submit to any jurisdiction.
+
+
+name: Build Python Wheel for Linux
+
+on:
+  # Trigger the workflow manually
+  workflow_dispatch: ~
+
+  # Allow to be called from another workflow
+  workflow_call: ~
+
+  # TODO automation trigger
+
+jobs:
+  build:
+    name: Build manylinux_2_28
+    runs-on: [self-hosted, Linux, platform-builder-Rocky-8.6]
+    # TODO which manylinux do we want to build for? 2014? 2_28? 2_34? Matrix?
+    container:
+      image: eccr.ecmwf.int/wheelmaker/2_28:latest
+      credentials:
+        username: ${{ secrets.ECMWF_DOCKER_REGISTRY_USERNAME }}
+        password: ${{ secrets.ECMWF_DOCKER_REGISTRY_ACCESS_TOKEN }}
+    steps:
+        # TODO convert this to be matrix-friendly. Note it's a bit tricky since
+        # we'd ideally not reexecute the compile step multiple times, but it
+        # (non-essentially) depends on a matrix-based step
+        # NOTE we dont use action checkout because it doesnt cleanup after itself correctly
+      - run: git clone --depth=1 --branch="${GITHUB_REF#refs/heads/}" https://github.com/$GITHUB_REPOSITORY /proj
+      - run: cd /proj && /buildscripts/prepare_deps.sh ./python_wrapper/buildconfig 3.11
+      - run: cd /proj && /buildscripts/compile.sh ./python_wrapper/buildconfig
+      - run: cd /proj && PYTHONPATH=/buildscripts /buildscripts/wheel-linux.sh ./python_wrapper/buildconfig 3.11
+      - run: cd /proj && /buildscripts/test-wheel.sh ./python_wrapper/buildconfig 3.11
+      - run: cd /proj && /buildscripts/upload-pypi.sh ./python_wrapper/buildconfig
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
+        # NOTE temporary thing until all the mess gets cleared
+      - run: rm -rf ./* ./.git ./.github

python_wrapper/buildconfig

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+# (C) Copyright 2024- ECMWF.
+#
+# This software is licensed under the terms of the Apache Licence Version 2.0
+# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+# In applying this licence, ECMWF does not waive the privileges and immunities
+# granted to it by virtue of its status as an intergovernmental organisation
+# nor does it submit to any jurisdiction.
+
+# to be source'd by wheelmaker's compile.sh *and* wheel-linux.sh
+# NOTE replace the whole thing with pyproject.toml? Less powerful, and quaint to use for sourcing ecbuild invocation
+# TODO we duplicate information -- pyproject.toml's `name` and `packages` are derivable from $NAME and must stay consistent
+
+NAME="odc"
+CMAKE_PARAMS=""
+PYPROJECT_DIR="python_wrapper"
+export eckit_ROOT="/tmp/prereqs/eckit"
+DEPENDENCIES='["eckit"]'

python_wrapper/setup.cfg

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+[metadata]
+description = "odc"
+long_description = file: README.md
+long_description_content_type = text/markdown
+author = file: AUTHORS

python_wrapper/setup.py

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+from setup_utils import plain_setup
+plain_setup()