Merge tag '10.7.rc0' into public/push_subgroup

SageMath version 10.7.rc0, Release Date: 2025-08-02

Author: yyyyx4

.devcontainer/onCreate-meson.sh

@@ -20,11 +20,11 @@ uv venv
 uv pip install \
     meson-python \
     "cypari2 >=2.2.1" \
-    "cython >=3.0, != 3.0.3, != 3.1.0" \
-    "cython >=3.0, != 3.0.3" \
+    "cysignals >=1.11.2, != 1.12.0" \
+    "cython >=3.0, != 3.0.3, < 3.1.0" \
     "gmpy2 ~=2.1.b999" \
     memory_allocator \
     "numpy >=1.25" \
     jinja2 \
-    setuptool
-uv sync --frozen --inexact --no-build-isolation
+    setuptools
+uv sync --frozen --inexact --no-build-isolation --config-settings=builddir=build/build-$SYSTEM

.devcontainer/portability-ubuntu-2204/devcontainer.json

@@ -0,0 +1,20 @@
+// See https://aka.ms/devcontainer.json for format details.
+{
+    "name": "ubuntu-22.04",
+    "image": "ubuntu:22.04",
+    "onCreateCommand": ".devcontainer/onCreate-meson.sh || true",
+    "features": {
+        "ghcr.io/devcontainers/features/git": {},
+        "ghcr.io/devcontainers/features/python:1": {},
+        "../uv": {
+			"version": "latest"
+		}
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-python.python"
+            ]
+        }
+    }
+}

.devcontainer/portability-ubuntu-2404/devcontainer.json

@@ -0,0 +1,20 @@
+// See https://aka.ms/devcontainer.json for format details.
+{
+    "name": "ubuntu-24.04",
+    "image": "ubuntu:24.04",
+    "onCreateCommand": ".devcontainer/onCreate-meson.sh || true",
+    "features": {
+        "ghcr.io/devcontainers/features/git": {},
+        "ghcr.io/devcontainers/features/python:1": {},
+        "../uv": {
+			"version": "latest"
+		}
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-python.python"
+            ]
+        }
+    }
+}

.devcontainer/portability-ubuntu-2504/devcontainer.json

@@ -0,0 +1,20 @@
+// See https://aka.ms/devcontainer.json for format details.
+{
+    "name": "ubuntu-25.04",
+    "image": "ubuntu:25.04",
+    "onCreateCommand": ".devcontainer/onCreate-meson.sh || true",
+    "features": {
+        "ghcr.io/devcontainers/features/git": {},
+        "ghcr.io/devcontainers/features/python:1": {},
+        "../uv": {
+			"version": "latest"
+		}
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-python.python"
+            ]
+        }
+    }
+}