mirror of
https://git.launchpad.net/livecd-rootfs
synced 2026-03-18 13:37:42 +00:00
Add build-livefs CLI tool
Provides a single command to run a livecd-rootfs build, replacing the manual setup of auto/ symlinks and env vars that lpbuildd's build_livefs.py encapsulates. Works from a git checkout, an installed deb, or via the /usr/bin/build-livefs symlink. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
michael.hudson@canonical.com
parent
7620f798f4
commit
0e292ea3f2
1
debian/livecd-rootfs.links
vendored
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1
debian/livecd-rootfs.links
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usr/share/livecd-rootfs/live-build/build-livefs usr/bin/build-livefs
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live-build/build-livefs
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live-build/build-livefs
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#!/usr/bin/python3
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import configparser
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import os
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import pathlib
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import platform
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import subprocess
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import click
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_CONFIG_FILE = pathlib.Path.home() / ".config" / "livecd-rootfs" / "build-livefs.conf"
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def _read_config() -> dict[str, str]:
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"""Read default values from the user config file if it exists.
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The config file uses INI format with a [defaults] section, e.g.:
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[defaults]
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http-proxy = http://squid.internal:3128/
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mirror = http://ftpmaster.internal/ubuntu/
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"""
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cp = configparser.ConfigParser()
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cp.read(_CONFIG_FILE)
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return dict(cp["defaults"]) if "defaults" in cp else {}
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_MACHINE_TO_ARCH = {
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"x86_64": "amd64",
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"aarch64": "arm64",
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"ppc64le": "ppc64el",
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"s390x": "s390x",
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"riscv64": "riscv64",
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"armv7l": "armhf",
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}
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def _default_arch():
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machine = platform.machine()
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try:
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return _MACHINE_TO_ARCH[machine]
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except KeyError:
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raise click.UsageError(
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f"Cannot determine default arch for machine {machine!r}; use --arch"
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)
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@click.command()
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@click.option(
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"--work-dir",
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default=".",
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type=click.Path(file_okay=False, path_type=pathlib.Path),
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help="Working directory for the build (default: current directory)",
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)
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@click.option("--project", required=True, help="Project name (e.g. ubuntu, ubuntu-cpc)")
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@click.option("--suite", required=True, help="Ubuntu suite/series (e.g. noble)")
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@click.option("--arch", default=None, help="Target architecture (default: host arch)")
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@click.option("--arch-variant", default=None, help="Architecture variant")
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@click.option("--subproject", default=None, help="Subproject")
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@click.option("--subarch", default=None, help="Sub-architecture")
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@click.option("--channel", default=None, help="Channel")
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@click.option(
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"--image-target",
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"image_targets",
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multiple=True,
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help="Image target (may be repeated)",
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)
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@click.option("--repo-snapshot-stamp", default=None, help="Repository snapshot stamp")
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@click.option(
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"--snapshot-service-timestamp", default=None, help="Snapshot service timestamp"
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)
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@click.option("--cohort-key", default=None, help="Cohort key")
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@click.option("--datestamp", default=None, help="Datestamp (sets NOW)")
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@click.option("--image-format", default=None, help="Image format (sets IMAGEFORMAT)")
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@click.option(
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"--proposed",
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is_flag=True,
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default=False,
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help="Enable proposed pocket (sets PROPOSED=1)",
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)
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@click.option(
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"--extra-ppa", "extra_ppas", multiple=True, help="Extra PPA (may be repeated)"
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)
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@click.option(
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"--extra-snap", "extra_snaps", multiple=True, help="Extra snap (may be repeated)"
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)
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@click.option("--build-type", default=None, help="Build type")
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@click.option(
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"--http-proxy",
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default=None,
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help="HTTP proxy (sets http_proxy, HTTP_PROXY, LB_APT_HTTP_PROXY)",
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)
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@click.option(
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"--mirror",
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default=None,
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help="Ubuntu archive mirror URL (sets MIRROR)",
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)
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@click.option(
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"--debug", is_flag=True, default=False, help="Enable debug mode (set -x in lb scripts)"
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)
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def main(
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work_dir,
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project,
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suite,
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arch,
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arch_variant,
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subproject,
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subarch,
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channel,
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image_targets,
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repo_snapshot_stamp,
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snapshot_service_timestamp,
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cohort_key,
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datestamp,
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image_format,
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proposed,
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extra_ppas,
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extra_snaps,
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build_type,
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http_proxy,
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mirror,
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debug,
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):
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cfg = _read_config()
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if http_proxy is None:
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http_proxy = cfg.get("http-proxy")
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if mirror is None:
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mirror = cfg.get("mirror")
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if arch is None:
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arch = _default_arch()
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# Locate auto/ scripts relative to this script, following symlinks.
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# Works for: git checkout, installed deb, and /usr/bin/build-livefs symlink.
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live_build_dir = pathlib.Path(__file__).resolve().parent
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auto_source = live_build_dir / "auto"
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# base_env is passed to both lb config and lb build
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base_env = {
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"PROJECT": project,
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"ARCH": arch,
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"LIVECD_ROOTFS_ROOT": str(live_build_dir.parent),
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}
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if arch_variant is not None:
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base_env["ARCH_VARIANT"] = arch_variant
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if subproject is not None:
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base_env["SUBPROJECT"] = subproject
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if subarch is not None:
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base_env["SUBARCH"] = subarch
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if channel is not None:
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base_env["CHANNEL"] = channel
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if image_targets:
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base_env["IMAGE_TARGETS"] = " ".join(image_targets)
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if repo_snapshot_stamp is not None:
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base_env["REPO_SNAPSHOT_STAMP"] = repo_snapshot_stamp
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if snapshot_service_timestamp is not None:
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base_env["SNAPSHOT_SERVICE_TIMESTAMP"] = snapshot_service_timestamp
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if cohort_key is not None:
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base_env["COHORT_KEY"] = cohort_key
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if http_proxy is not None:
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base_env["http_proxy"] = http_proxy
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base_env["HTTP_PROXY"] = http_proxy
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base_env["LB_APT_HTTP_PROXY"] = http_proxy
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# config_env adds lb-config-only vars on top of base_env
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config_env = {
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**base_env,
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"SUITE": suite,
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}
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if datestamp is not None:
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config_env["NOW"] = datestamp
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if image_format is not None:
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config_env["IMAGEFORMAT"] = image_format
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if proposed:
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config_env["PROPOSED"] = "1"
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if extra_ppas:
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config_env["EXTRA_PPAS"] = " ".join(extra_ppas)
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if extra_snaps:
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config_env["EXTRA_SNAPS"] = " ".join(extra_snaps)
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if build_type is not None:
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config_env["BUILD_TYPE"] = build_type
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if mirror is not None:
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config_env["MIRROR"] = mirror
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work_dir = work_dir.resolve()
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work_dir.mkdir(parents=True, exist_ok=True)
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# Create/replace auto/ symlinks
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auto_dir = work_dir / "auto"
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auto_dir.mkdir(exist_ok=True)
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for script in ("config", "build", "clean"):
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link = auto_dir / script
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if link.is_symlink() or link.exists():
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link.unlink()
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link.symlink_to(auto_source / script)
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# Write debug.sh if requested
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if debug:
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debug_dir = work_dir / "local" / "functions"
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debug_dir.mkdir(parents=True, exist_ok=True)
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(debug_dir / "debug.sh").write_text("set -x\n")
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def run(cmd, env_extra):
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env = os.environ.copy()
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env.update(env_extra)
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if os.getuid() != 0:
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env_args = [f"{k}={v}" for k, v in env_extra.items()]
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cmd = ["sudo", "env"] + env_args + cmd
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subprocess.run(cmd, cwd=work_dir, env=env, check=True)
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run(["lb", "clean", "--purge"], base_env)
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run(["lb", "config"], config_env)
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run(["lb", "build"], base_env)
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if __name__ == "__main__":
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main()
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