Ludovic Courtès <l...@gnu.org> skribis: > When passing #:keep-mtime? #t to ‘copy-recursively’, the mtime of > regular files is preserved, but the mtime of directories (and symlinks) > is not. > > This is because ‘set-file-time’ is called in the ‘down’ procedure of > ‘file-system-fold’, before the directory is populated.
Fixed by 201cbcac3e9c23cc28352fa9ece3e677e22cc12c (core-updates). > ‘populate-store’ is affected by this bug, meaning that it creates stores > where directories have “wrong” timestamps. In practice this is probably > less likely to have undesirable side effects than regular files with > wrong timestamps (think ‘make’, .go files, etc.) In some cases, such as the initrd, the problem is harmless because timestamps are reset anyway in the archive (for instance ‘write-cpio-archive’ does that.) There might be problems in other cases, such as (gnu build image). Ludo’.
