ci: python cibuildwheel updates for go-jsonnet

- Checkout with submodules, otherwise the sdist won't include libjsonnet.h
- Install golang in the cibuildwheel build container.
- Skip musllinux build; it's not working for me.
- Skip Windows platform builds; they're not working for me.

It would be nice to get the other platforms working but I have already
spent hours on this and haven't succeeded yet. Previous go-jsonnet
releases on PyPI didn't have prebuilt wheel packages anyway, so it's
still strictly better to have some rather than none even if not all
platforms are covered.

.github/workflows/install-go.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/bash
+
+# Helper script to install Go dev tools.
+# This is run _inside_ the manylinux container(s)
+# used in cibuildwheel to build the wheels.
+
+set -euo pipefail
+
+TDIR="$(mktemp -d)"
+>&2 echo "Working dir: ${TDIR}"
+trap "rm -rf ${TDIR}" EXIT
+
+>&2 echo "Downloading Go 1.23.6 distribution file."
+curl -fL -o "${TDIR}/go1.23.6.linux-amd64.tar.gz" 'https://go.dev/dl/go1.23.6.linux-amd64.tar.gz'
+
+>&2 echo "Checking distribution file integrity"
+GO_DIST_SHA256='9379441ea310de000f33a4dc767bd966e72ab2826270e038e78b2c53c2e7802d'
+printf '%s %s/go1.23.6.linux-amd64.tar.gz\n' "${GO_DIST_SHA256}" "${TDIR}" | sha256sum -c
+
+>&2 echo "Unpacking to /usr/local/go"
+rm -rf /usr/local/go && tar -C /usr/local -xzf "${TDIR}/go1.23.6.linux-amd64.tar.gz"
+
+>&2 echo "Installed Go version:"
+/usr/local/go/bin/go version

.github/workflows/publish-python.yml

@@ -29,6 +29,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - uses: actions/setup-python@v5
         with:
@@ -50,22 +52,29 @@ jobs:
     name: Build wheels on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
-        #os: [ubuntu-22.04, windows-latest, macos-latest]
-        os: [ubuntu-22.04, windows-latest]
+        os: [ubuntu-22.04]
 
     permissions:
       contents: read
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Build wheels
         uses: pypa/cibuildwheel@ee63bf16da6cddfb925f542f2c7b59ad50e93969 # v2.22.0
         env:
-          # Skip PyPy, 32-bit Windows, 32-bit Linux, and CPython before 3.9.
+          # Skip PyPy, 32-bit Windows, 32-bit Linux, musllinux and CPython before 3.9.
           # See https://cibuildwheel.readthedocs.io/en/stable/options/#examples_1
-          CIBW_SKIP: "*-win32 pp* *-manylinux_i686 *-musllinux_i686 cp36-* cp37-* cp38-*"
+          CIBW_SKIP: "*-win32 pp* *-manylinux_i686 *-musllinux* cp36-* cp37-* cp38-*"
+          CIBW_BEFORE_ALL_LINUX: >
+            bash {package}/.github/workflows/install-go.sh &&
+            export PATH="$PATH":/usr/local/go/bin &&
+            command -v go > /dev/null
+          CIBW_ENVIRONMENT: PATH=$PATH:/usr/local/go/bin
           CIBW_TEST_COMMAND: >
             python {package}/python/_jsonnet_test.py