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1234567891011121314151617181920212223242526272829303132333435363738394041424344#!/usr/bin/env bash# Run a command with our local yarn install, rather than any globally installed# instance.
set -euo pipefail
if [[ "${CI:-}" == "true" ]]; then set -xfi
( if [[ "${CI:-}" == "true" ]]; then set -x fi
repo_root="${BASH_SOURCE%/*}/../" cd "$repo_root"
./tool/node --version >/dev/null # Ensure node is unpacked and ready
cachedir="$HOME/.cache/tailscale-yarn" tarball="${cachedir}.tar.gz"
read -r want_rev < "./tool/yarn.rev"
got_rev="" if [[ -x "${cachedir}/bin/yarn" ]]; then got_rev=$(PATH="$HOME/.cache/tailscale-node/bin:$PATH" "${cachedir}/bin/yarn" --version) fi
if [[ "$want_rev" != "$got_rev" ]]; then rm -rf "$cachedir" "$tarball" mkdir -p "$cachedir" curl -f -L -o "$tarball" "https://github.com/yarnpkg/yarn/releases/download/v${want_rev}/yarn-v${want_rev}.tar.gz" (cd "$cachedir" && tar --strip-components=1 -xf "$tarball") rm -f "$tarball" fi)
# Deliberately not using cachedir here, to keep the environment# completely pristine for execution of yarn.export PATH="$HOME/.cache/tailscale-node/bin:$HOME/.cache/tailscale-yarn/bin:$PATH"exec "$HOME/.cache/tailscale-yarn/bin/yarn" "$@"