electron-builder names the unpacked dir linux-unpacked on x86_64 but
linux-<arch>-unpacked on every other arch (linux-arm64-unpacked is what
ARM ships). The gate hardcoded the x86_64 name, so a healthy ARM install
false-gated as "skew" on EVERY update, telling the user to reinstall an
app that was already correct. The ostree/symlink half was fixed earlier
(d3b090a3); this lands the remaining arch-dir half.
Resolve the unpacked dir the running binary actually lives in by scanning
the release dir's linux*-unpacked candidates (canonicalised both sides
before the compare, so the symlink fix's semantics are preserved, with a
first-found fallback so foreign targets keep gating as skew.
Tests drive the real --self-test-gate entry point; on BSD-readlink hosts
a PATH shim provides GNU so the gate logic runs everywhere
(the existing linux_only symlink matrix covers -dependent paths).
Co-authored-by: C-Est-Dept <cestdept@example.com>
Co-authored-by: Sahilvishnaliya <sahil@example.com>
EOF
)
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