In case os-release does not contain VERSION_ID, and it is not an exception (like Void Linux), then discard the results got from os-release. This matches what the old C code did -- e.g. see commit 32d19e3289bc259901f77398703f16cf6eabd510, and the changes in commit 0251c0fcaa4fbb3b42968792996748136700c8d8. --- daemon/inspect_fs_unix.ml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/daemon/inspect_fs_unix.ml b/daemon/inspect_fs_unix.ml index ba947c30e..8c7b1d83c 100644 --- a/daemon/inspect_fs_unix.ml +++ b/daemon/inspect_fs_unix.ml @@ -111,6 +111,10 @@ let rec parse_os_release release_file data = data.version <- Some (0, 0); true + (* No version detected, so fall back to other ways. *) + | { version = None } -> + false + | _ -> true ) -- 2.13.6