CI: Add test release workflow. Add hack to allow numpy to be built from

sourve without BLAS being present

.ci/build_wheels.sh

@@ -21,6 +21,11 @@ export CIBW_TEST_REQUIRES="cython pytest numpy nibabel coverage cython-coverage
 # history [GHA logs of failing builds deleted]).
 export CIBW_SKIP="pp*"
 
+# Make sure numpy can be built without BLAS being present
+# (it may end up being built from source on some platforms)
+# https://github.com/numpy/numpy/issues/24703#issuecomment-1722379388
+export PIP_CONFIG_SETTINGS='setup-args="-Dallow-noblas=true"'
+
 # Skip i686 tests - I have experienced hangs on these
 # platforms, which I traced to a trivial numpy operation -
 # "numpy.linalg.det(numpy.eye(3))". This occurs when numpy

.github/workflows/release.yaml

@@ -1,6 +1,7 @@
-# This workflow builds binary wheels for indexed_gzip,
-# for different platforms and different Python versions,
-# using cibuildwheel. It is triggered manually.
+# This workflow builds binary wheels for indexed_gzip, for
+# different platforms and different Python versions, using
+# cibuildwheel. It is triggered manually. The built wheels
+# are published to PyPi.
 
 on:
   workflow_dispatch

.github/workflows/test_release.yaml

@@ -0,0 +1,110 @@
+# This workflow builds binary wheels for indexed_gzip,
+# for different platforms and different Python versions,
+# using cibuildwheel. It is triggered manually.
+
+on:
+  workflow_dispatch
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+
+  build_sdist:
+    name:    Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: "3.10"
+
+      - name: Build sdist
+        run:  python setup.py sdist
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: sdist
+          path: ./dist/*.tar.gz
+
+  build_macos_wheels:
+    name: Build macos wheels
+    runs-on: macos-latest
+
+    env:
+      PLATFORM:         ${{ matrix.os }}
+      CIBW_ARCHS_MACOS: "x86_64 arm64 universal2"
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: "3.10"
+
+      - name: Build wheels
+        run:  bash ./.ci/build_wheels.sh
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: wheels
+          path: ./dist/*.whl
+
+  build_windows_wheels:
+    name: Build Windows ${{ matrix.arch }} wheels
+    runs-on: windows-latest
+
+    strategy:
+      matrix:
+        arch: ["AMD64", "x86"]
+
+    env:
+      PLATFORM:           windows-latest
+      CIBW_ARCHS_WINDOWS: ${{ matrix.arch }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: "3.10"
+      - name: Download zlib
+        run:  bash ./.ci/download_zlib.sh
+      - name: Build wheels
+        run:  bash ./.ci/build_wheels.sh
+      - uses: actions/upload-artifact@v2
+        with:
+          name: wheels
+          path: ./dist/*.whl
+
+  build_linux_wheels:
+    # Typo left in for hilarity
+    name: Build Linux ${{ matrix.arch }} eels
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        arch: ["x86_64", "i686", "aarch64"]
+
+    env:
+      PLATFORM:         ubuntu-latest
+      CIBW_ARCHS_LINUX: ${{ matrix.arch }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: "3.10"
+      - name: Set up QEMU for emulated (e.g. ARM) builds
+        if:   ${{ matrix.arch == 'aarch64' }}
+        uses: docker/setup-qemu-action@v1
+      - name: Build wheels
+        run:  bash ./.ci/build_wheels.sh
+      - uses: actions/upload-artifact@v2
+        with:
+          name: wheels
+          path: ./dist/*.whl