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123456789101112131415161718192021222324252627// Copyright (c) Tailscale Inc & contributors// SPDX-License-Identifier: BSD-3-Clause
// Package cibuild reports runtime CI information.package cibuild
import "os"
// On reports whether the current binary is executing on a CI system.func On() bool { // CI env variable is set by GitHub. // https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables return os.Getenv("GITHUB_ACTIONS") != "" || os.Getenv("CI") == "true"}
// OnTailscaleCI reports whether the current binary is executing on// tailscale/tailscale's own GitHub Actions CI, as opposed to a fork's CI// or an unrelated downstream CI (such as a Linux distribution's package// build infrastructure) that also sets the generic CI=true environment// variable.func OnTailscaleCI() bool { // GITHUB_REPOSITORY_OWNER is set by GitHub Actions to the owner of // the repository whose workflow is running. For pull requests, this // is the base repository's owner, not the fork's. return os.Getenv("GITHUB_REPOSITORY_OWNER") == "tailscale"}