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fix(setup): prefer Linux-native Bun on WSL and respect STEP_BUN_BIN #37

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Merged
ZouR-Ma merged 1 commit into from
Jun 17, 2026
Merged

fix(setup): prefer Linux-native Bun on WSL and respect STEP_BUN_BIN #37

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49 changes: 43 additions & 6 deletions scripts/setup.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,40 @@ warn() { printf " \033[33m! %s\033[0m\n" "$*"; }
err() { printf " \033[31m✗ %s\033[0m\n" "$*"; }
step_cli() { node scripts/run-step.mjs --stale-only "$@"; }

# Resolve a usable Bun binary. On WSL, a Windows bun (under /mnt) cannot build
# or run a working Linux native binary, so we explicitly look for a
# Linux-native installation first.
resolve_bun() {
if [[ -n "${STEP_BUN_BIN:-}" ]]; then
if [[ -x "$STEP_BUN_BIN" ]]; then
echo "$STEP_BUN_BIN"
return 0
fi
warn "STEP_BUN_BIN=$STEP_BUN_BIN is not executable; ignoring" >&2
fi

local bun_path
bun_path=$(command -v bun || true)
if [[ -n "$bun_path" && "$bun_path" != /mnt/* ]]; then
echo "$bun_path"
return 0
fi

if [[ -n "$bun_path" && "$bun_path" == /mnt/* ]]; then
warn "Detected Windows Bun at $bun_path; looking for a Linux-native Bun..." >&2
fi

for candidate in "$HOME/.bun/bin/bun" "/usr/local/bin/bun" "/opt/bun/bin/bun"; do
if [[ -x "$candidate" ]]; then
info "Using Linux-native Bun: $candidate" >&2
echo "$candidate"
return 0
fi
done

return 1
}

# ── 0. pre-flight ─────────────────────────────────────────────────────────
# pnpm may be missing on a fresh clone. Try to bootstrap it via corepack
# (bundled with Node ≥ 16.10) before bailing out.
Expand Down Expand Up @@ -185,13 +219,16 @@ if [[ "$SKIP_BUILD" == 1 ]]; then
if [[ -x "dist/bin/step" ]]; then
INSTALL_NATIVE_BINARY=1
fi
elif command -v "${STEP_BUN_BIN:-bun}" >/dev/null 2>&1; then
info "Bun found; building native binary (dist/bin/step)."
pnpm build:bin
ok "dist/bin/step built"
INSTALL_NATIVE_BINARY=1
else
warn "Bun not found; installing a Node-based launcher instead of a native binary."
BUN_PATH=$(resolve_bun || true)
if [[ -n "$BUN_PATH" ]]; then
info "Bun found; building native binary (dist/bin/step)."
STEP_BUN_BIN="$BUN_PATH" pnpm build:bin
ok "dist/bin/step built"
INSTALL_NATIVE_BINARY=1
else
warn "Bun not found; installing a Node-based launcher instead of a native binary."
fi
fi

# ── 7. Install to ~/.step-cli/bin/ + ensure PATH ──────────────────────────
Expand Down
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