myxce/DEPS.md
lei.chen 50cf424146 build: remove nix dependency layer -- apt system libs + meson wrap subprojects
The build no longer self-wraps into `nix develop`: src/tools/xce-build.sh now
runs meson+ninja directly on system packages, with a dependency preflight
that fails early naming the missing tool/pkg-config package (DEPS.md).

Dependencies (see DEPS.md for the full tables):
- 11 C libraries from apt (libuv, openssl, libedit, sqlite3, hwloc, libcgroup,
  libtirpc, libcyaml, libyaml, zlib, libsystemd) with version floors in
  meson.build mirroring the Ubuntu 24.04 baseline.
- sd-bus: default libsystemd, -Duse_elogind=true opt-back for nix-era hosts.
- 6 libraries/tools unavailable in apt become committed meson wrap
  subprojects under src/subprojects/ (source closure, ~500 files): the
  upstream trees plus packagefiles/ overlays and diff_files patches
  registering dependency/program overrides the nix .pc files used to
  provide (incl. the '<name>-raw' variable deps the Go CGO path reads).
  Fresh-clone reproducibility verified: wiped trees + `meson subprojects
  download` reproduce the committed state exactly (fixed librtti.wrap's
  dangling patch_directory and c-capnproto's empty packagefiles overlay).
- xceadmin: self-contained venv built from requirements-build.txt (pinned,
  offline-seedable via PIP_FIND_LINKS) instead of --system-site-packages.

Build/packaging:
- Makefile facade over xce-build.sh; scripts/ci-ubuntu.sh drives a bare
  Ubuntu 24.04 container through deps + build + tests.
- src/tools/xce-package.sh: release-tree tarball packager. Collects
  non-base DT_NEEDED libs from the BUILD-tree binaries (staged ldd lies:
  the dangling build RPATH makes ldd drop the very lines the naive filter
  needs), sets $ORIGIN RPATHs, rebases the xceadmin venv at install time
  (kernel does not parse quotes in shebangs), ships systemd unit samples +
  install.sh. Local smoke test: all 8 binaries resolve, xceadmin works from
  both bin/ wrapper and venv script.

Test fixes found on the way (all environmental, not build bugs):
- harness_test.c setUp(): pin XCE_CONTROLLER_PEERS to a bound-then-closed
  loopback port so the CLI-error tests assert the no-controller failure
  path even on a dev box running a live cluster on localhost:9990.
- test_test_cli.c: setpgid(0,0) in the spawned-xce_test child. libedit's
  sig_handler re-raises received signals via kill(0, sig) -- process GROUP
  wide (strace -k evidence) -- and the child previously shared the
  harness's pgrp, so an interrupted SSL handshake killed the whole suite
  (exit 130).

Also fixed while re-baselining on the de-nix toolchain (pre-existing, now
deterministic): raft_init zeroes pre-vote tally state (pre_vote_in_progress/
pre_votes_granted/pre_vote_replies were left at stack garbage);
push_config_to_standbys clears stale config acks before fan-out
(repl_reset_config_acks) -- SHA-256-derived tags are not monotonic, so a
previous push's ack numerically above the new tag fabricated a barrier
quorum; capnpc-c's generated encode_* memsets the destination first
(skipped Data fields fed garbage into capn_setp).

Validation: asan profile 161/161 meson tests green (one known p2_integration
-110 timing flake on first run, green on re-run); debug + release full
builds OK; tarball smoke-tested on the build host. Cluster rollout on
t1/t2/t3 follows.

Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-10-20 18:04:22 +00:00

5.2 KiB
Raw Blame History

XCE 第三方依赖清单

建立:2026-10-20(build/de-nix 分支)。背景与决策见 gaps.md "六、构建/分发系统"。

原则:系统库优先(apt/发行版包),发行版没有的用 meson wrap subproject 从源码构建; 运行期需要自带的库由打包脚本 bundle($ORIGIN RPATH),不引入 /nix/store 或任何 内容寻址二进制闭包。glibc/libm/libpthread/pthread 永不 bundle。

构建工具链

工具 最低版本 获取 备注
gcc 13 系统包 apt install gcc(glibc 2.39+ 基线)
meson 1.5 pip install meson / apt install meson(≥1.3 时 pip 补) src/meson.build 要求 >=1.5
ninja 1.11 apt install ninja-build meson 默认 backend
pkg-config 0.29 apt install pkg-config
go 1.22 上游 tarball / apt install golang-go apiserver/xcecli 已 vendor 全部模块,构建离线
capnp (capnproto) 1.0.1 apt install capnproto(含 libcapnp-dev) schema 编译器 + C++ 运行时(pycapnp 链接用)
packcc 2.2 wrap subproject(Ubuntu 24.04 无包) 3 个 .peg 解析器(lib/section, rusage, xce_resreq, xce_select)
python3 3.10 系统自带 xceadmin 构建/测试;no-fork rule 检查脚本
swag latest go install github.com/swaggo/swag/cmd/swag@latest 仅 apiserver 文档再生成时需要,非构建必需

C 库依赖

apt 可直接安装(11 个)

依赖 (meson 名) apt 包 版本下限 用途
libuv libuv1-dev >=1.44 所有 daemon 事件循环
openssl libssl-dev >=3.0 TLS(controller 互联、apiserver)、SHA256
libedit libedit-dev >=3.1 xce_test REPL(BSD 许可,替代 GPL readline)
sqlite3 libsqlite3-dev >=3.37 worker 本地状态
hwloc libhwloc-dev >=2.8 worker 拓扑/槽位
libcgroup libcgroup-dev >=2.0 worker cgroup v2 限额
libtirpc libtirpc-dev >=1.3 rpc 头文件
libcyaml libcyaml-dev >=1.2 YAML 配置读取
yaml-0.1 libyaml-dev >=0.2.5 同上(libcyaml 依赖)
zlib zlib1g-dev >=1.2.11 压缩
threads/math/rt (libc) — 无需安装

apt 没有 → meson wrap subproject(源码随 repo 拉取构建,6 个)

依赖 (meson 名) 上游 版本 用途 / 备注
c-capnproto github:shen390s/c-capnproto(pin e45ff68) — Cap'n Proto C runtime(libCapnC_Runtime)+ capnpc-c 代码生成器;32 个源文件 include capnp_c.h
librtti git+ssh gitea rshen/librtti(pin 2149f778) 0.0.2 C 运行时类型信息库;上游本身是零依赖 meson 项目;93 个源文件消费
struct2json xbuild channel 源码 vendor 1.0.0 cJSON + s2j 封装(纯静态库);6 个 meson 消费点
tinylog xbuild channel 源码 vendor 1.0.0 轻量异步日志(-ltlog + tlog.h);13 个源文件消费
unity xbuild channel 源码 vendor(上游 ThrowTheSwitch/Unity) 2.6.1 单元测试框架(libunity.a + unity/unity.h);仅测试目标链接
packcc 上游 arithy/packcc >=2.2 PEG 解析器生成器;构建工具而非链接库

特殊:libelogind → libsystemd

worker 的 systemd transient unit 管理(sd_bus_*,263 处调用)目前链 nix 的 elogind 255.5。 Ubuntu 24.04 无 elogind 包,但有 libsystemd-dev 255.4——sd-bus API 同源兼容。 构建默认 dependency('libsystemd'),保留 -Duse_elogind=true 选项供非 systemd 平台。 (Step 2 实施时验证;这是本迁移唯一有 ABI 行为风险的替换点,worker 单测兜底。)

Python(xceadmin)

src/xceadmin/pyproject.toml 已声明全部运行依赖:click>=8.0, pycapnp>=1.3, PyYAML>=6.0, jsonschema>=4.0。构建用普通 venv(不要 --system-site-packages——那是 nix 环境的产物): python3 -m venv .venv && .venv/bin/pip install .。pycapnp 的 C 扩展链系统的 capnproto C++ 运行时(apt capnproto/libcapnp-dev 提供版本 1.0.1;pycapnp>=1.3 兼容)。

为什么不用 nix store(决策记录)

nix 把依赖闭包做成内容寻址的 /nix/store 路径 + mount namespace,要求闭包出现在每一台 运行机器上,且 patchelf 重定位后 ldd/gdb/stack trace 全部变形(t2/t3 master 进程 argv 是 ld-linux... --library-path /opt/newxce/app/nix/store/...,人读不懂)。EDA 客户环境没有 /nix/store,这条路在产品定义上不可用。本 repo 依赖只有十来个中小型库,"自包含"的正确形态 是源码闭包(wrap subproject)+ 运行期 bundle 清单,不需要二进制 store。此外 nix 的 LD_LIBRARY_PATH 泄漏会导致系统工具崩溃(t2/t3 的 ls/head segfault 实录)。

运行期 bundle 规则(打包脚本用)

  • bundle:libuv、libcapnp/libCapnC_Runtime、librtti、libtlog、libstruct2json、 libcyaml、libyaml、libtirpc、libedit、libcgroup、libhwloc、libssl/libcrypto(若目标基线 <3.0)
  • 永不 bundle:libc/libm/libpthread/libdl/librt(glibc)、libsystemd(按目标发行版)
  • 判定方法:对每个产物 ldd,凡路径不在 {/lib, /usr/lib, /lib64} 的(即 wrap 构建产物) 一律复制进 lib/,二进制设 $ORIGIN/../lib RPATH。