Raito Bezarius
1e98c01912
Nix daemon runs in a service context, usually with systemd. If the Nix daemon unit adds `[Service] CacheDirectory=nix-daemon`, it should successfully use `/var/cache/nix-daemon` automatically. Instead, it uses `/root/.cache` right now, which is really bad. By default, we add `[Service] CacheDirectory=nix` now which means that caches are moved into `/var/cache/nix`. Fixes #634. Change-Id: I854b1045bfdce8f60110aea70bda1bf6657dfd7b Signed-off-by: Raito Bezarius <raito@lix.systems>
1.2 KiB
synopsis, cls, issues, category, credits
| synopsis | cls | issues | category | credits | |||
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| Move /root/.cache/nix to /var/cache/nix by default |
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Breaking Changes |
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By default, Lix attempts to locate a cache directory for its operations (such
as the narinfo cache) by checking the value of $XDG_CACHE_DIR.
However, since the Nix daemon is a system service, using $XDG_CACHE_DIR is
not typical in this context.
To address this, systemd provides a better solution. Specifically, when
CacheDirectory= is set in the [Service] section of a systemd unit, it
automatically sets the $CACHE_DIRECTORY environment variable and systemd will
manage that cache directory for us.
Now, our systemd unit includes CacheDirectory=nix, which sets the
$CACHE_DIRECTORY and takes precedence over $XDG_CACHE_DIR.
If the daemon is run under user units, systemd will automatically set
$XDG_CACHE_DIR.
If neither of these variables is set, Lix falls back to its default behavior.
By default, Lix will try to find a cache directory for its various operations
(e.g. narinfo cache) by looking into $XDG_CACHE_DIR.
In summary, what was stored in /root/.cache/nix is now moved to
/var/cache/nix/nix.