Add RWX CI for the Zig compiler (Linux x64 + arm64), running in parallel with GHA - #10043

Draft

djpenka wants to merge 9 commits into

roc-lang:mainfrom

djpenka:migrate-rwx

Commits on Jul 7, 2026

RWX CI for the Zig compiler (Linux): parallel rollout
djpenka
committed
d89d032
build.zig: pin a fixed CPU model for host-arch builds (cross-agent cache stability)
djpenka
committed
fab6fa3
RWX CI: install Rust for glue tests + right-size agents (~47% less compute)
djpenka
committed
b0dec21
test runner: survive Zig's crash-recovery re-spawn
djpenka
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a3735ec
Size up the agent
djpenka
committed
634bf1d
RWX CI: replace compile tool caches with a build-runner precompile task
djpenka
committed
f32268e

Commits on Jul 8, 2026

update git/clone package version
djpenka
committed
4311f41
RWX CI: split gates by git-dependence + hoist shared aliases
djpenka
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127ceb0
RWX CI: trim comments + compose tracy-check filter from pos-build
djpenka
committed
29709d1