c-ludenberg
131e84bb3f
- Interactive TUI: distro/init/libc/arch/package selection, ISO config - Root vs fakeroot mode detection with warnings - Disk space check before build - Confirmation prompts with build summary - Fakeroot support via set_mode() in base.py
79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
"""Base class for distro backends."""
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from __future__ import annotations
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import shutil
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import subprocess
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from abc import ABC, abstractmethod
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from pathlib import Path
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_BUNDLED = Path(__file__).resolve().parent.parent / "bin"
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_LIB = Path(__file__).resolve().parent.parent / "lib"
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_mode = "root"
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def set_mode(m: str) -> None:
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global _mode
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_mode = m
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class Distro(ABC):
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"""Base class every distro backend must implement."""
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name: str
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host_deps: list[str]
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@abstractmethod
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def bootstrap(self, rootfs: Path, config: dict) -> None:
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"""Create the rootfs by installing the base system."""
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@abstractmethod
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def install_packages(self, rootfs: Path, packages: list[str]) -> None:
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"""Install packages into an existing rootfs."""
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@abstractmethod
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def configure_base(self, rootfs: Path, config: dict) -> None:
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"""Write hostname, fstab, locale, users, services, etc."""
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@abstractmethod
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def install_bootloader(self, rootfs: Path, config: dict) -> None:
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"""Install and configure the bootloader inside the rootfs."""
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@staticmethod
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def _tool(name: str) -> str:
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bundled = _BUNDLED / name
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if bundled.is_file():
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return str(bundled)
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if bundled.is_dir():
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script = bundled / name
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if script.is_file():
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return str(script)
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path = shutil.which(name)
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if path:
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return path
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return name
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@staticmethod
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def _run(cmd: list[str], **kw) -> subprocess.CompletedProcess:
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import os
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print(f" \033[90m$\033[0m \033[1m{' '.join(cmd)}\033[0m")
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env = kw.pop("env", None) or os.environ.copy()
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lib_str = str(_LIB)
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env["LD_LIBRARY_PATH"] = f"{lib_str}:{env.get('LD_LIBRARY_PATH', '')}"
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kw.setdefault("input", b"Y\n")
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return subprocess.run(cmd, check=True, env=env, **kw)
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@staticmethod
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def _run_chroot(rootfs: Path, cmd: list[str], **kw) -> subprocess.CompletedProcess:
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prefix = []
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if _mode == "fakeroot" and shutil.which("fakeroot"):
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prefix = ["fakeroot"]
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elif _mode == "root":
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prefix = ["sudo"]
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full = [*prefix, "chroot", str(rootfs), "/bin/sh", "-c", " ".join(cmd)]
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print(f" \033[90m$\033[0m \033[33m[chroot]\033[0m \033[1m{' '.join(cmd)}\033[0m")
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return subprocess.run(full, check=True, **kw)
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