zig Feature: Add CACHEDIR.TAG to zig-cache

Consider adding CACHEDIR.TAG to zig-cache directory.

It's just text file with ASCII text at the beginning:

Signature: 8a477f597d28d172789f06886806bc55

(The hexadecimal string is same on all CACHEDIR.TAG files.)

For example Rust does this, and plenty other things, it makes easier for backup tools to ignore the directory.

Mar 11 '21 19:03 Ciantic

Do you have examples of tools that use CACHEDIR.TAG? this is the first I've heard of it.

Mar 12 '21 03:03 daurnimator

Cargo uses it.

Mar 12 '21 03:03 g-w1

Do you have examples of tools that use CACHEDIR.TAG? this is the first I've heard of it.

from gnutar docs:

       --exclude-caches
              exclude contents of directories containing CACHEDIR.TAG, except for the tag file itself

       --exclude-caches-all
              exclude directories containing CACHEDIR.TAG

       --exclude-caches-under exclude everything under directories containing
              CACHEDIR.TAG

Mar 12 '21 08:03 mikdusan

Kopia (my preferred backup tool at the moment) uses it by default

Mar 12 '21 10:03 Ciantic

Do you have examples of tools that use CACHEDIR.TAG? this is the first I've heard of it.

Restic and fontconfig supports it. I also opened an issue for rsync.

Mar 10 '23 11:03 perillo

What about adding CACHEDIR.TAG to the zig-out directory, too?

Mar 10 '23 11:03 perillo