Meson: test archlinux on CI and migrate devcontainer

.devcontainer/onCreate-meson.sh

@@ -21,9 +21,10 @@ 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 sync --frozen --inexact --no-build-isolation --config-settings=builddir=build/build-$SYSTEM

.devcontainer/portability-archlinux/Dockerfile

@@ -0,0 +1,2 @@
+FROM archlinux
+RUN pacman -Syu --noconfirm bash git python

.devcontainer/portability-archlinux/devcontainer.json

@@ -0,0 +1,23 @@
+// See https://aka.ms/devcontainer.json for format details.
+{
+    "name": "archlinux",
+    //"image": "archlinux",
+    "dockerFile": "Dockerfile",
+    "onCreateCommand": ".devcontainer/onCreate-meson.sh || true",
+    "features": {
+        // Git feature is not compatible with Arch 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"
+            ]
+        }
+    }
+}

.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

@@ -8,6 +8,7 @@ on:
     paths:
       - '**.build'
       - 'subprojects/**'
+      - '.github/workflows/ci.yml'
   workflow_dispatch:
     # Allow to run manually
 
@@ -21,10 +22,26 @@ jobs:
         container:
           - fedora:41
           - fedora:42
+          - ghcr.io/void-linux/void-glibc-full
+          - archlinux
     container:
       image: ${{ matrix.container }}
 
     steps:
+      - name: Prepare container
+        run: |
+          if [ "${{ matrix.container }}" = "ghcr.io/void-linux/void-glibc-full" ]; then
+            xbps-install -Syu xbps
+            xbps-install -yu
+            # node-based actions require libstdc++.so.6
+            xbps-install -Sy libstdc++ bash git
+          fi
+          if [ "${{ matrix.container }}" = "archlinux" ]; then
+            # The archlinux container is configured to not install docs by default
+            # but we need the maxima help to be in place
+            sed -i '/^NoExtract/d' /etc/pacman.conf
+          fi
+
       - name: Checkout code
         # cannot use v4 yet because of https://github.com/actions/checkout/issues/1487
         uses: actions/checkout@v3
@@ -37,7 +54,11 @@ jobs:
       - name: Set up Python
         run: |
           uv python install
-          uv venv
+          if [ "${{ matrix.container }}" = "ghcr.io/void-linux/void-glibc-full" ] || [ "${{ matrix.container }}" = "archlinux" ]; then
+            uv venv --system-site-packages
+          else
+            uv venv
+          fi
           . .venv/bin/activate
           echo PATH=$PATH >> $GITHUB_ENV
 
@@ -65,15 +86,15 @@ jobs:
             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 sync --frozen --inexact --no-build-isolation -v
 
       - name: Test
         run: |
-          uv run ./sage -t --all -p4 || true
+          uv run --frozen ./sage -t --all -p4 || true
 

build/bin/sage-print-system-package-command

@@ -171,7 +171,7 @@ case $system:$command in
         fi
         ;;
     void*:update)
-        print_shell_command "${SUDO}xbps-install -Su"
+        print_shell_command "${SUDO}xbps-install -Suy"
         ;;
     void*:install)
         [ "$YES" = yes ] && options="$options --yes"

build/pkgs/ecm/distros/arch.txt

@@ -0,0 +1 @@
+gmp-ecm

build/pkgs/elliptic_curves/distros/void.txt

@@ -0,0 +1 @@
+sage-data-elliptic_curves

build/pkgs/gap/distros/void.txt

@@ -0,0 +1 @@
+gap-devel

build/pkgs/mpfi/distros/arch.txt

@@ -0,0 +1 @@
+mpfi

src/meson.build

@@ -150,7 +150,7 @@ zlib = dependency('zlib', version: '>=1.2.11')
 # https://github.com/conda-forge/eclib-feedstock/issues/48
 ec = dependency('eclib', version: '>=20231211', required: false, disabler: true)
 # Cannot be found via pkg-config
-ec = cc.find_library('ec', required: not is_windows, disabler: true)
+ec = cc.find_library('ec', required: false, disabler: true)
 ecm = cc.find_library('ecm', required: not is_windows, disabler: true)
 gmpxx = dependency('gmpxx', required: not is_windows, disabler: true)
 fflas = dependency(