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bazel: mkosi_image rule
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Malte Poll
Malte Poll
parent
5323c2d870
commit
90967d5bc2
6
.gitignore
vendored
6
.gitignore
vendored
@ -63,3 +63,9 @@ __pycache__/
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# bazeldnf
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# bazeldnf
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.bazeldnf/
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.bazeldnf/
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# mkosi
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.mkosi-tmp*
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# nix
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/result
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137
bazel/mkosi/mkosi_image.bzl
Normal file
137
bazel/mkosi/mkosi_image.bzl
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@ -0,0 +1,137 @@
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""" Bazel rule for building mkosi images. """
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load("@aspect_bazel_lib//lib:paths.bzl", "relative_file")
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load("@bazel_skylib//lib:paths.bzl", "paths")
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def _mkosi_image_impl(ctx):
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args = ctx.actions.args()
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inputs = []
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outputs = []
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tools = []
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workdir = ctx.file.mkosi_conf.dirname
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config_rel = lambda target: relative_file(target, ctx.file.mkosi_conf.path)
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env = {}
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args.add("-C", workdir)
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if ctx.attr.distribution:
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args.add("--distribution", ctx.attr.distribution)
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if ctx.attr.architecture:
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args.add("--architecture", ctx.attr.architecture)
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args.add_all(ctx.attr.packages, before_each = "--package")
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for package_file in ctx.files.package_files:
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args.add("--package", config_rel(package_file.path))
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for tree in ctx.files.base_trees:
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args.add("--base-tree", config_rel(tree.path))
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for tree in ctx.files.skeleton_trees:
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args.add("--skeleton-tree", config_rel(tree.path))
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for tree in ctx.files.package_manager_trees:
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args.add("--package-manager_tree", config_rel(tree.path))
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for tree in ctx.files.extra_trees:
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args.add("--extra-tree", config_rel(tree.path))
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for initrd in ctx.files.initrds:
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inputs.append(initrd)
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args.add("--initrd", config_rel(initrd.path))
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inputs.extend(ctx.files.mkosi_conf)
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inputs.extend(ctx.files.srcs[:])
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inputs.extend(ctx.files.package_files[:])
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inputs.extend(ctx.files.base_trees[:])
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inputs.extend(ctx.files.skeleton_trees[:])
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inputs.extend(ctx.files.package_manager_trees[:])
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inputs.extend(ctx.files.extra_trees[:])
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inputs.extend(ctx.files.initrds[:])
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if ctx.attr.source_date_epoch:
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args.add("--source-date-epoch", ctx.attr.source_date_epoch)
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if ctx.attr.seed:
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args.add("--seed", ctx.attr.seed)
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if ctx.file.version_file:
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env["VERSION_FILE"] = ctx.file.version_file.path
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inputs.append(ctx.file.version_file)
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outputs.extend(ctx.outputs.outs)
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if ctx.attr.out_dir:
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out_dir = ctx.actions.declare_directory(ctx.attr.out_dir)
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for output in outputs:
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if output.path.startswith(out_dir.path + "/"):
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fail("output {} is nested within output directory {}; outputs cannot be nested within each other!".format(output.path, out_dir.path))
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if output.is_directory and out_dir.path.startswith(output.path + "/"):
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fail("output directory {} is nested within output directory {}; outputs cannot be nested within each other!".format(out_dir.path, output.path))
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outputs.append(out_dir)
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args.add("--output-dir", config_rel(out_dir.path))
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else:
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args.add("--output-dir", config_rel(paths.join(ctx.bin_dir.path, ctx.label.package)))
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args.add_all(ctx.attr.extra_args)
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for key, value in ctx.attr.env.items():
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args.add("--environment", "{}={}".format(key, value))
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if ctx.attr.kernel_command_line:
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args.add("--kernel-command-line", ctx.attr.kernel_command_line)
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for key, value in ctx.attr.kernel_command_line_dict.items():
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args.add("--kernel-command-line", "{}={}".format(key, value))
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if ctx.attr.autologin:
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args.add("--autologin", "yes")
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info = ctx.toolchains["@constellation//bazel/mkosi:toolchain_type"].mkosi
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if not info.valid:
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fail("mkosi toolchain is not properly configured: {}".format(info.name))
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if info.label:
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executable_files = info.label[DefaultInfo].files_to_run
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tools.append(executable_files)
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mkosi_bin = executable_files.executable.path
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else:
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mkosi_bin = info.path
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wrapper = ctx.actions.declare_file("mkosi_wrapper.sh")
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ctx.actions.expand_template(
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template = ctx.file._mkosi_wrapper_template,
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output = wrapper,
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substitutions = {
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"@@MKOSI@@": mkosi_bin,
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},
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is_executable = True,
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)
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inputs.append(wrapper)
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ctx.actions.run(
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outputs = outputs,
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inputs = inputs,
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executable = wrapper,
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arguments = [args],
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tools = tools,
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execution_requirements = {"no-remote": "1", "no-sandbox": "1"},
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progress_message = "Building mkosi image " + ctx.label.name,
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env = env,
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)
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return DefaultInfo(files = depset(outputs), runfiles = ctx.runfiles(outputs))
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mkosi_image = rule(
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implementation = _mkosi_image_impl,
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attrs = {
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"architecture": attr.string(),
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"autologin": attr.bool(),
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"base_trees": attr.label_list(allow_files = True),
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"distribution": attr.string(),
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"env": attr.string_dict(),
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"extra_args": attr.string_list(),
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"extra_trees": attr.label_list(allow_files = True),
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"initrds": attr.label_list(allow_files = True),
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"kernel_command_line": attr.string(),
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"kernel_command_line_dict": attr.string_dict(),
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"mkosi_conf": attr.label(
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allow_single_file = True,
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mandatory = True,
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doc = "main mkosi.conf file",
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),
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"out_dir": attr.string(),
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"outs": attr.output_list(),
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"package_files": attr.label_list(allow_files = True),
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"package_manager_trees": attr.label_list(allow_files = True),
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"packages": attr.string_list(),
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"seed": attr.string(),
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"skeleton_trees": attr.label_list(allow_files = True),
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"source_date_epoch": attr.string(),
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"srcs": attr.label_list(allow_files = True),
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"version_file": attr.label(allow_single_file = True),
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"_mkosi_wrapper_template": attr.label(
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default = Label("@constellation//bazel/mkosi:mkosi_wrapper.sh.in"),
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allow_single_file = True,
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),
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},
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executable = False,
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toolchains = ["@constellation//bazel/mkosi:toolchain_type"],
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)
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14
bazel/mkosi/mkosi_wrapper.sh.in
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14
bazel/mkosi/mkosi_wrapper.sh.in
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@ -0,0 +1,14 @@
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#!/usr/bin/env bash
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set -euo pipefail
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shopt -s inherit_errexit
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export PATH=/run/wrappers/bin:/run/current-system/sw/bin:/bin:/usr/bin:/usr/local/bin
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VERSION_ARG=""
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args=("$@")
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if [[ -n ${VERSION_FILE+x} ]]; then
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VERSION_ARG="--environment=IMAGE_VERSION=$(cat "${VERSION_FILE}")"
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args+=("$VERSION_ARG")
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fi
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exec @@MKOSI@@ "${args[@]}" build
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