Meson: test void linux on CI and add devcontainer for it

Author: tobiasdiez

.devcontainer/onCreate-meson.sh

@@ -19,11 +19,12 @@ eval $(build/bin/sage-print-system-package-command $SYSTEM --yes --ignore-missin
 uv venv
 uv pip install \
     meson-python \
-    "cypari2 >=2.2.1" \
     "cysignals >=1.11.2, != 1.12.0" \
-    "cython >=3.0, != 3.0.3" \
+    "cython >=3.0, != 3.0.3, != 3.1.0" \
     "gmpy2 ~=2.1.b999" \
     memory_allocator \
     "numpy >=1.25" \
-    jinja2
-uv sync --frozen --inexact --no-build-isolation-package=sagemath
+    jinja2 \
+    setuptools
+uv pip install "cypari2 >=2.2.1" --no-build-isolation
+uv sync --frozen --inexact --no-build-isolation --config-settings=builddir=build/build-$SYSTEM

.devcontainer/portability-void/Dockerfile

@@ -0,0 +1,3 @@
+FROM ghcr.io/void-linux/void-glibc-full
+RUN xbps-install -Suy bash git python
+RUN chsh -s /usr/bin/bash

.devcontainer/portability-void/devcontainer.json

@@ -0,0 +1,24 @@
+// See https://aka.ms/devcontainer.json for format details.
+{
+    "name": "void",
+    // Doesn't include 'bash', so we use a custom dockerfile
+    // "image": "ghcr.io/void-linux/void-glibc-full",
+    "dockerFile": "Dockerfile",
+    "onCreateCommand": ".devcontainer/onCreate-meson.sh || true",
+    "features": {
+        // Git feature is not compatible with Void Linux, so we install it manually in the Dockerfile 
+        // https://github.com/devcontainers/features/issues/824
+        //"ghcr.io/devcontainers/features/git": {},
+        //"ghcr.io/devcontainers/features/python:1": {},
+        "../uv": {
+			"version": "latest"
+		}
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-python.python"
+            ]
+        }
+    }
+}

.github/workflows/ci.yml

@@ -21,6 +21,7 @@ jobs:
         container:
           - fedora:41
           - fedora:42
+          - ghcr.io/void-linux/void-glibc-full
     container:
       image: ${{ matrix.container }}
 
@@ -63,15 +64,15 @@ jobs:
           # Install build dependencies manually as workaround for https://github.com/astral-sh/uv/issues/1516
           uv pip install \
             meson-python \
-            "cypari2 >=2.2.1" \
             "cysignals >=1.11.2, != 1.12.0" \
-            "cython >=3.0, != 3.0.3" \
+            "cython >=3.0, != 3.0.3, != 3.1.0" \
             "gmpy2 ~=2.1.b999" \
             memory_allocator \
             "numpy >=1.25" \
+            setuptools \
             jinja2
-
-          uv sync --frozen --inexact --no-build-isolation-package=sagemath
+          uv pip install --no-build-isolation "cypari2 >=2.2.1"
+          uv sync --frozen --no-build-isolation -v
 
       - name: Test
         run: |