ci(release-rust): install build-essential for the xwin host toolchain - #100
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The xwin cross job's build scripts and proc-macros link with `cc` (gcc) on the Linux runner, separate from the Windows cross compiler. The distro `clang` install previously pulled gcc in transitively; sourcing clang from apt.llvm.org (#99) no longer does, and the self-hosted runner ships no gcc, so host build scripts failed with `linker 'cc' not found` (proc-macro2, quote). Install build-essential explicitly alongside the cross toolchain.
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Follow-up to #99. The xwin cross job builds host crates (build scripts, proc-macros) that link with
cc(gcc) on the Linux runner — separate from the Windows cross compiler.Before #99, installing the distro
clangpulledgcc/makein transitively. Sourcing clang from apt.llvm.org with--no-install-recommendsno longer does, and the self-hosted runner has no gcc preinstalled — so host build scripts now fail withlinker 'cc' not found(proc-macro2, quote) before the cross compile even starts.Fix: install
build-essentialexplicitly alongside the cross toolchain. Confirmed root cause in the v0.5.1-rc.3 run: rc.2's log showsgcc makepulled in transitively by the old distro clang install; rc.3 (apt.llvm.org clang) has no gcc →ccnot found.