| """Tar helpers.""" |
| |
| load("@aspect_bazel_lib//lib:repo_utils.bzl", "repo_utils") |
| |
| # TODO: use a hermetic tar from aspect_bazel_lib and remove this. |
| def detect_system_tar(rctx): |
| """Check if the host tar command is GNU tar. |
| |
| Args: |
| rctx: the repository context |
| Returns: |
| True if the tar command is GNU tar, False otherwise |
| """ |
| |
| # We assume that any linux platform is using GNU tar. |
| if repo_utils.is_linux(rctx): |
| return "gnu" |
| |
| tar_args = ["tar", "--version"] |
| result = rctx.execute(tar_args) |
| if result.return_code: |
| msg = "Failed to determine tar version. '{}' exited with {}: \nSTDOUT:\n{}\nSTDERR:\n{}".format(" ".join(tar_args), result.return_code, result.stdout, result.stderr) |
| fail(msg) |
| |
| return "gnu" if "GNU tar" in result.stdout else "non-gnu" |
