Commit 96c3617
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docs+ci: 本地上手三步走 + 平台矩阵拆分(linux/macos/win10/win11/win 无 MSVC STL)
README(三语 + book 两语)重写「本地练习环境」段,改成明确的三步:
1. 装工具 —— `xlings install d2x mcpp -y`,两个工具名都链到各自仓库
2. 取课程并验证环境 —— 默认 `d2x install d2mcpp` → `cd d2mcpp` → `mcpp test`;
clone 源码那条路收进 <details>,作为可选项而不是与默认路径并列的「二选一」
3. 开始练习 —— `d2x checker` / `d2x status`
第 2 步把 `mcpp test` 摆到台面上是有意的:练习就是测试,新环境跑一遍
「全部不通过」既是练习的起点,也已经证明工具链是通的。
CI 从单个 ubuntu job 拆成五档平台矩阵,每档都跑完整两层验证:
linux / macos / windows-10 线(windows-2022)/ windows-11 线(windows-2025)
/ windows 且无 MSVC STL
最后一档把 runner 上的 Visual Studio 藏掉(改名 vswhere.exe 与 VC 目录 +
清空 VS* 环境变量,并就地检查后置条件),模拟学习者的干净 Windows —— 这
才是多数人的机器。mcpp 应当自动回落到自带的 winlibs MinGW,产物 target
目录名(x86_64-windows-gnu)就是断言依据。
两层验证:
- `mcpp test`(已有 e2e.sh)—— pristine 全不过 + 覆盖答案后全过
- `d2x checker`(新增 checker-e2e.sh)—— 答案就位后 checker 必须自己走完
52 道题并退 0
加第二层是因为 checker 在 mcpp test 之上还叠了 Provider 的 NDJSON 协议、
进度持久化、文件监听三层;这三层断掉时 mcpp test 照样全绿,Windows 上就
出过这种静默回归(#87)。checker-e2e.sh 的看门狗自己用 shell 轮询实现,
不依赖 timeout(1)(macOS 默认没有)。
顺带:
- .xlings.json pin 上抬 —— mcpp 2026.8.1.1 → 2026.8.2.1(裸 Windows 自动
回落 MinGW 是这个版本才有的能力,无 MSVC STL 那一档依赖它),
d2x 2026.08.02.1 → 2026.08.02.2
- 修复文件名核对 job:它还在按迁移前的布局找 `intro/tests cpp*/tests`,
练习早已搬进 src/,于是一个文件都没扫到、永远绿。现在真的核对 52 对。
- 工作流触发路径补上 .xlings.json
本地已验:e2e.sh all(zh/en 各 52/52)、checker-e2e.sh zh 与 en 均全过。1 parent 32a7a3e commit 96c3617
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