mcpplibs.os 0.2.1; mcpp 2026.10.27.1 in CI and the openkal measurement; mcpp.plugins latest is 0.20.0

.github/workflows/openkal-compat.yml

@@ -42,7 +42,7 @@ env:
   # run if this drifts from pins.toml. See the comment beside `mcpp` in
   # pins.toml for why this pin, not just validate.yml's, is gated by the
   # index floor.
-  MCPP_VERSION: "2026.10.26.1"
+  MCPP_VERSION: "2026.10.27.1"
   # CROSS-VALIDATION BEFORE A RELEASE, NOT AFTER IT.
   #
   # Empty in an ordinary run, so this measurement keeps using the RELEASED

.github/workflows/validate.yml

@@ -435,7 +435,12 @@ env:
   # 2026.10.26.1 (mcpp-community/mcpp#841): a graph-supplied libstdc++ under
   # clang (gcc.libstdcxx, the libstdcxx-llvm member), `requires` as a table,
   # and one C++ runtime per process -- compat.sycl-runtime's requirement.
-  MCPP_VERSION: "2026.10.26.1"
+  #
+  # 2026.10.27.1 (mcpp-community/mcpp#847): platforms (SPEC-013) -- the
+  # ok-image rows take openkal-platform with no declaration, the
+  # tests/examples/openkal-platform member's hosted arrangement -- and
+  # packaging along three axes (SPEC-014); mcpp.plugins 0.20.0's floor.
+  MCPP_VERSION: "2026.10.27.1"
 
 jobs:
   lint:

.github/workflows/xpkgindex-update.yml

@@ -25,7 +25,7 @@ concurrency:
 
 env:
   PYTHONUTF8: '1'
-  MCPP_VERSION: '2026.10.26.1'
+  MCPP_VERSION: '2026.10.27.1'
   # CROSS-VALIDATION BEFORE A RELEASE: a candidate that needs an mcpp newer
   # than the pin (its package states the floor) is built with mcpp built from
   # this branch of mcpp-community/mcpp, as openkal-compat.yml measures with it.

CHANGELOG.md

@@ -9,6 +9,12 @@
 
 ### Added
 
+- **mcpplibs.os 0.2.1。** 在程序自己的 C 库的两种安排下构建并通过测试:系统自己的 C 库,以及位于系统自身三元组上的
+  openkal-musl 与 openkal-llvm-runtime(mcpp docs/24)。机器、内存、卷的种类与两项交换在 Linux 与 macOS 上经内核调用
+  得到,Windows 上以 32 位 DWORD 与 UTF-16 WCHAR 声明 kernel32 的名字,均不经 C 库;标准输出的转向与 SIGPIPE 在进程
+  保存它们的地方修改。mcpp-language-server 的操作系统层进入 os(有界运行、线程、环境赋值、有界读取、规范名)。
+  ok image 的 C 库、C++ 运行时与加载器取自其平台(openkal-platform,mcpp 2026.10.27.1 为 `<arch>-openkal` 选择),
+  包不再声明它们。GLOBAL 为 GitHub 标签归档,CN 为 GitCode `mcpp-res/os` 镜像,sha256 一致。测试成员 `os` 移到 0.2.1。
 - **mcpplibs.mwrap.dr_libs 2026.03.03(新包)。** dr_libs-m:以 C++23 模块(`import mcpplibs.mwrap.dr_libs;`)使用
   compat.dr_libs 2026.03.03(dr_wav 0.14.5、dr_flac 0.13.3、dr_mp3 0.7.3)。每个头文件各一个模块且可单独导入:
   `mcpplibs.mwrap.dr_libs.wav`(42 个类型、48 个枚举值、94 个函数)、`.flac`(32、6、31)、`.mp3`(28、8、29),全部以

pkgs/m/mcpp.plugins.lua

@@ -2,12 +2,19 @@
 -- each member selected by a feature.
 --
 --   [dependencies.mcpp]
---   plugins = { version = "0.19.1", features = ["rules-spirv"], host-module = true }
+--   plugins = { version = "0.20.0", features = ["rules-spirv"], host-module = true }
 --
 --   // build.mcpp
 --   import mcpp;
 --   import mcpp.rules.spirv;
 --
+-- 0.20.0 (package floor mcpp 2026.10.27.1): `mcpp.plugins.platform` -- a
+-- platform's plugin provides a package format over the staged package
+-- (`provide_format`, reading its mcpp-package.json) -- and
+-- `mcpp::plugins::package::read`; openkal-platform's okb is its first user
+-- (mcpp SPEC-013, SPEC-014). Moving `latest` breaks no published consumer:
+-- each pins an exact version.
+--
 -- 0.19.1 (same package floor): `mcpp::plugins::json::value` holds its object
 -- members as a plain struct instead of `std::pair<std::string, value>`, which
 -- clang with libstdc++'s `std` module refused -- the combination an editor's
@@ -931,7 +938,7 @@ package = {
                 },
                 sha256 = "adf1f9d6691a5d05a8a4a94e83c733ea39caee1510ce2c9af4cb23bebabea9f5",
             },
-            ["latest"] = { ref = "0.19.1" },
+            ["latest"] = { ref = "0.20.0" },
         },
         macosx = {
             ["0.20.0"] = {
@@ -1214,7 +1221,7 @@ package = {
                 },
                 sha256 = "adf1f9d6691a5d05a8a4a94e83c733ea39caee1510ce2c9af4cb23bebabea9f5",
             },
-            ["latest"] = { ref = "0.19.1" },
+            ["latest"] = { ref = "0.20.0" },
         },
         windows = {
             ["0.20.0"] = {
@@ -1497,7 +1504,7 @@ package = {
                 },
                 sha256 = "adf1f9d6691a5d05a8a4a94e83c733ea39caee1510ce2c9af4cb23bebabea9f5",
             },
-            ["latest"] = { ref = "0.19.1" },
+            ["latest"] = { ref = "0.20.0" },
         },
     },
 

pkgs/o/os.lua

@@ -6,8 +6,10 @@
 -- one built as an ok image (`<arch>-openkal').
 --
 -- No `deps'. The package names openkal and, for the system it is built for,
--- that system's implementation in its own manifest; a program that builds ok
--- images names the C library and the C++ run-time inside them itself.
+-- that system's implementation in its own manifest. From 0.2.1 an ok image's
+-- C library, C++ run-time and loader are its platform's (openkal-platform,
+-- which mcpp 2026.10.27.1 selects for `<arch>-openkal'), and the package
+-- declares none of them.
 package = {
     spec        = "1",
     namespace   = "mcpplibs",
@@ -26,6 +28,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.2.1"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.1.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/os/releases/download/0.2.1/os-0.2.1.tar.gz",
+                },
+                sha256 = "264a3b80ef40fcb760b7c63565e01597549fdd8e5aa0672389b5d9384661218f",
+            },
             ["0.2.0"] = {
                 url    = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.0.tar.gz",
                 sha256 = "9dc147ad8dca0216549c40dc4dfabaed7394cdf7a7f253c58613ccc226abd04e",
@@ -47,6 +56,13 @@ package = {
             },
         },
         macosx = {
+            ["0.2.1"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.1.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/os/releases/download/0.2.1/os-0.2.1.tar.gz",
+                },
+                sha256 = "264a3b80ef40fcb760b7c63565e01597549fdd8e5aa0672389b5d9384661218f",
+            },
             ["0.2.0"] = {
                 url    = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.0.tar.gz",
                 sha256 = "9dc147ad8dca0216549c40dc4dfabaed7394cdf7a7f253c58613ccc226abd04e",
@@ -68,6 +84,13 @@ package = {
             },
         },
         windows = {
+            ["0.2.1"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.1.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/os/releases/download/0.2.1/os-0.2.1.tar.gz",
+                },
+                sha256 = "264a3b80ef40fcb760b7c63565e01597549fdd8e5aa0672389b5d9384661218f",
+            },
             ["0.2.0"] = {
                 url    = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.0.tar.gz",
                 sha256 = "9dc147ad8dca0216549c40dc4dfabaed7394cdf7a7f253c58613ccc226abd04e",

tests/examples/os/mcpp.toml

@@ -7,7 +7,7 @@ name    = "os-tests"
 version = "0.1.0"
 
 [dependencies.mcpplibs]
-os = "0.2.0"
+os = "0.2.1"
 
 [indices]
 mcpplibs = { path = "../../.." }

tests/openkal/pins.toml

@@ -18,6 +18,7 @@ toolchain = "[email protected]"
 # index requires mcpp >= 2026.9.18.1 but this is mcpp 2026.9.17.3 [E0006]"
 # before a single line of the member's own source is read.
 #
+# 2026-10-28: measurement engine 2026.10.27.1, the workflow's (platforms, SPEC-013).
 # 2026-10-26: measurement engine 2026.10.26.1, the workflow's. 2026-10-24: measurement engine updated to 2026.10.24.1; runtime and
 # toolchain pins below remain unchanged. The index client floor is unchanged.
 #
@@ -139,7 +140,7 @@ toolchain = "[email protected]"
 # openkal-musl 0.16.0 and openkal-llvm-runtime 0.12.0), because a pin that
 # moves onto an unreachable or divergent asset fails every member at once and
 # reports it as a compatibility result.
-mcpp      = "2026.10.26.1"
+mcpp      = "2026.10.27.1"
 
 # The Windows target is named for the C environment the graph presents there,
 # which is musl's (openkal-musl declares `[c-abi] presents = "posix"`), not