Relax Python requirement to >=3.8

Signed-off-by: Cong Wang <cwang@multikernel.io>

Author: congwang-mk

README.md

@@ -34,7 +34,7 @@ protects your working directory automatically.
 
 ## Requirements
 
-- **Linux 5.13+** (Landlock ABI v1), **Python 3.10+**
+- **Linux 5.13+** (Landlock ABI v1), **Python 3.8+**
 - No root, no cgroups, no C compiler (all kernel interfaces via ctypes)
 
 | Feature | Minimum kernel |

pyproject.toml

@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 name = "sandlock"
 version = "0.1.0"
 description = "Lightweight process sandbox using Landlock, seccomp, and seccomp user notification"
-requires-python = ">=3.10"
+requires-python = ">=3.8"
 dependencies = ["tomli>=1.0; python_version < '3.11'"]
 license = {text = "Apache-2.0"}
 readme = "README.md"

src/sandlock/_syscall_table.py

@@ -8,6 +8,7 @@
 To regenerate from headers:
     grep -oP '#define __NR_(\w+)\s+(\d+)' /usr/include/.../unistd_64.h
 """
+from __future__ import annotations
 
 # fmt: off