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ci: 引导用的 mcpp 自带一份 xlings,而那份早于一次索引移动
一个 mcpp 发布**内嵌**一份 xlings 在 `<install>/registry/bin/xlings`,而解析 runtime binding 的是**那一份**,不是 quick_install 装的那一份。`xim:glibc` 的 latest 移到 2.44.2,而只有 xlings 2026.8.27.1 改为从索引读默认绑定 (openxlings/xlings#567)。旧的内嵌副本要 `glibc@2.44`,干净环境装出 `2.44.2`, 工具链 post-install 停住: error: selected RuntimeBinding glibc@2.44 requires payload '.../xpkgs/xim-x-glibc/2.44', but it is not installed 在每一台**新**机器上出现,在任何已存在的机器上都不出现 —— 所以它在开发机上不可见。 索引的 pkgs/g/glibc.lua 把这次失败逐字记着。 ⭐ mcpp 2026.8.27.1(mcpp-community/mcpp#515)内嵌的就是 2026.8.27.1,那之后本步骤 是空操作。只在版本不同时替换,并**打印替换了什么** —— 静默替换不可能发生。 待 pin 发布后移除。
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‎.github/workflows/ci.yml‎

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@@ -116,6 +116,40 @@ jobs:
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done
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mcpp --version
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mcpp self config --mirror GLOBAL
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# ⚠️⚠️ TRANSITION: THE BOOTSTRAP mcpp CARRIES ITS OWN xlings, AND
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# THAT COPY PREDATES AN INDEX MOVE.
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#
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# An mcpp release BUNDLES an xlings at `<install>/registry/bin/xlings`
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# (mcpp's `pinned::kXlingsVersion`), and that copy — not the one
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# installed above — is what resolves runtime bindings for everything
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# mcpp does. `xim:glibc`'s `latest` moved to 2.44.2, and only
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# xlings 2026.8.27.1 reads the default binding from the index instead
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# of a constant compiled into itself (openxlings/xlings#567). An
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# older bundled copy asks for `glibc@2.44`, a clean environment
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# installs `2.44.2`, and the toolchain post-install fixup stops:
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#
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# error: selected RuntimeBinding glibc@2.44 requires payload
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# '…/xpkgs/xim-x-glibc/2.44', but it is not installed
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#
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# on every NEW environment and on none that already existed. The
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# index records this failure verbatim in `pkgs/g/glibc.lua`.
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#
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# ⭐ REMOVE THIS ONCE THE PIN SHIPS. mcpp 2026.8.27.1 bundles
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# 2026.8.27.1, so a bootstrap from it needs nothing here. The step is
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# a no-op when the bundled copy is already new enough, and it says
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# which copy it replaced so a silent substitution is not possible.
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mcpp_home="${MCPP_HOME:-$HOME/.mcpp}"
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bundled="$mcpp_home/registry/bin/xlings"
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if [ -x "$bundled" ] && [ -n "$(command -v xlings)" ]; then
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have="$("$bundled" --version 2>/dev/null | head -1)"
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outer="$(xlings --version 2>/dev/null | head -1)"
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if [ "$have" != "$outer" ]; then
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cp "$(command -v xlings)" "$bundled"
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echo "bundled xlings: $have -> $("$bundled" --version | head -1) (was older than the installed one)"
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else
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echo "bundled xlings: $have (already the installed one)"
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fi
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fi
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# ⭐⭐ CROSS-VALIDATION: BUILD THE mcpp UNDER REVIEW AND USE THAT ONE.
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#
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# Empty in the ordinary run, so this job keeps testing the RELEASED
@@ -391,6 +425,40 @@ jobs:
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sleep 60
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done
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mcpp self config --mirror GLOBAL
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# ⚠️⚠️ TRANSITION: THE BOOTSTRAP mcpp CARRIES ITS OWN xlings, AND
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# THAT COPY PREDATES AN INDEX MOVE.
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#
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# An mcpp release BUNDLES an xlings at `<install>/registry/bin/xlings`
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# (mcpp's `pinned::kXlingsVersion`), and that copy — not the one
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# installed above — is what resolves runtime bindings for everything
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# mcpp does. `xim:glibc`'s `latest` moved to 2.44.2, and only
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# xlings 2026.8.27.1 reads the default binding from the index instead
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# of a constant compiled into itself (openxlings/xlings#567). An
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# older bundled copy asks for `glibc@2.44`, a clean environment
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# installs `2.44.2`, and the toolchain post-install fixup stops:
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#
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# error: selected RuntimeBinding glibc@2.44 requires payload
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# '…/xpkgs/xim-x-glibc/2.44', but it is not installed
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#
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# on every NEW environment and on none that already existed. The
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# index records this failure verbatim in `pkgs/g/glibc.lua`.
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#
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# ⭐ REMOVE THIS ONCE THE PIN SHIPS. mcpp 2026.8.27.1 bundles
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# 2026.8.27.1, so a bootstrap from it needs nothing here. The step is
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# a no-op when the bundled copy is already new enough, and it says
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# which copy it replaced so a silent substitution is not possible.
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mcpp_home="${MCPP_HOME:-$HOME/.mcpp}"
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bundled="$mcpp_home/registry/bin/xlings"
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if [ -x "$bundled" ] && [ -n "$(command -v xlings)" ]; then
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have="$("$bundled" --version 2>/dev/null | head -1)"
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outer="$(xlings --version 2>/dev/null | head -1)"
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if [ "$have" != "$outer" ]; then
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cp "$(command -v xlings)" "$bundled"
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echo "bundled xlings: $have -> $("$bundled" --version | head -1) (was older than the installed one)"
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else
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echo "bundled xlings: $have (already the installed one)"
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fi
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fi
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# ⭐⭐ CROSS-VALIDATION: BUILD THE mcpp UNDER REVIEW AND USE THAT ONE.
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#
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# Empty in the ordinary run, so this job keeps testing the RELEASED
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sleep 60
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done
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mcpp self config --mirror GLOBAL
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# ⚠️⚠️ TRANSITION: THE BOOTSTRAP mcpp CARRIES ITS OWN xlings, AND
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# THAT COPY PREDATES AN INDEX MOVE.
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#
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# An mcpp release BUNDLES an xlings at `<install>/registry/bin/xlings`
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# (mcpp's `pinned::kXlingsVersion`), and that copy — not the one
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# installed above — is what resolves runtime bindings for everything
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# mcpp does. `xim:glibc`'s `latest` moved to 2.44.2, and only
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# xlings 2026.8.27.1 reads the default binding from the index instead
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# of a constant compiled into itself (openxlings/xlings#567). An
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# older bundled copy asks for `glibc@2.44`, a clean environment
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# installs `2.44.2`, and the toolchain post-install fixup stops:
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#
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# error: selected RuntimeBinding glibc@2.44 requires payload
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# '…/xpkgs/xim-x-glibc/2.44', but it is not installed
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#
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# on every NEW environment and on none that already existed. The
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# index records this failure verbatim in `pkgs/g/glibc.lua`.
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#
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# ⭐ REMOVE THIS ONCE THE PIN SHIPS. mcpp 2026.8.27.1 bundles
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# 2026.8.27.1, so a bootstrap from it needs nothing here. The step is
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# a no-op when the bundled copy is already new enough, and it says
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# which copy it replaced so a silent substitution is not possible.
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mcpp_home="${MCPP_HOME:-$HOME/.mcpp}"
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bundled="$mcpp_home/registry/bin/xlings"
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if [ -x "$bundled" ] && [ -n "$(command -v xlings)" ]; then
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have="$("$bundled" --version 2>/dev/null | head -1)"
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outer="$(xlings --version 2>/dev/null | head -1)"
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if [ "$have" != "$outer" ]; then
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cp "$(command -v xlings)" "$bundled"
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echo "bundled xlings: $have -> $("$bundled" --version | head -1) (was older than the installed one)"
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else
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echo "bundled xlings: $have (already the installed one)"
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fi
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fi
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# ⭐⭐ CROSS-VALIDATION: BUILD THE mcpp UNDER REVIEW AND USE THAT ONE.
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#
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# Empty in the ordinary run, so this job keeps testing the RELEASED

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