mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-15 10:46:15 +02:00
eb7d7780b1
This is needed to avoid this https://github.com/mesonbuild/meson/issues/13774 when we go back to making our subproject directory `src`.
79 lines
3.2 KiB
Markdown
79 lines
3.2 KiB
Markdown
# Name
|
|
|
|
`nix-collect-garbage` - delete unreachable [store objects]
|
|
|
|
# Synopsis
|
|
|
|
`nix-collect-garbage` [`--delete-old`] [`-d`] [`--delete-older-than` *period*] [`--max-freed` *bytes*] [`--dry-run`]
|
|
|
|
# Description
|
|
|
|
The command `nix-collect-garbage` is mostly an alias of [`nix-store --gc`](@docroot@/command-ref/nix-store/gc.md).
|
|
That is, it deletes all unreachable [store objects] in the Nix store to clean up your system.
|
|
|
|
However, it provides two additional options,
|
|
[`--delete-old`](#opt-delete-old) and [`--delete-older-than`](#opt-delete-older-than),
|
|
which also delete old [profiles], allowing potentially more [store objects] to be deleted because profiles are also garbage collection roots.
|
|
These options are the equivalent of running
|
|
[`nix-env --delete-generations`](@docroot@/command-ref/nix-env/delete-generations.md)
|
|
with various augments on multiple profiles,
|
|
prior to running `nix-collect-garbage` (or just `nix-store --gc`) without any flags.
|
|
|
|
> **Note**
|
|
>
|
|
> Deleting previous configurations makes rollbacks to them impossible.
|
|
|
|
These flags should be used with care, because they potentially delete generations of profiles used by other users on the system.
|
|
|
|
## Locations searched for profiles
|
|
|
|
`nix-collect-garbage` cannot know about all profiles; that information doesn't exist.
|
|
Instead, it looks in a few locations, and acts on all profiles it finds there:
|
|
|
|
1. The default profile locations as specified in the [profiles] section of the manual.
|
|
|
|
2. > **NOTE**
|
|
>
|
|
> Not stable; subject to change
|
|
>
|
|
> Do not rely on this functionality; it just exists for migration purposes and is may change in the future.
|
|
> These deprecated paths remain a private implementation detail of Nix.
|
|
|
|
`$NIX_STATE_DIR/profiles` and `$NIX_STATE_DIR/profiles/per-user`.
|
|
|
|
With the exception of `$NIX_STATE_DIR/profiles/per-user/root` and `$NIX_STATE_DIR/profiles/default`, these directories are no longer used by other commands.
|
|
`nix-collect-garbage` looks there anyways in order to clean up profiles from older versions of Nix.
|
|
|
|
# Options
|
|
|
|
These options are for deleting old [profiles] prior to deleting unreachable [store objects].
|
|
|
|
- <span id="opt-delete-old">[`--delete-old`](#opt-delete-old)</span> / `-d`
|
|
|
|
Delete all old generations of profiles.
|
|
|
|
This is the equivalent of invoking [`nix-env --delete-generations old`](@docroot@/command-ref/nix-env/delete-generations.md#generations-old) on each found profile.
|
|
|
|
- <span id="opt-delete-older-than">[`--delete-older-than`](#opt-delete-older-than)</span> *period*
|
|
|
|
Delete all generations of profiles older than the specified amount (except for the generations that were active at that point in time).
|
|
*period* is a value such as `30d`, which would mean 30 days.
|
|
|
|
This is the equivalent of invoking [`nix-env --delete-generations <period>`](@docroot@/command-ref/nix-env/delete-generations.md#generations-time) on each found profile.
|
|
See the documentation of that command for additional information about the *period* argument.
|
|
|
|
{{#include ./opt-common.md}}
|
|
|
|
{{#include ./env-common.md}}
|
|
|
|
# Example
|
|
|
|
To delete from the Nix store everything that is not used by the current
|
|
generations of each profile, do
|
|
|
|
```console
|
|
$ nix-collect-garbage -d
|
|
```
|
|
|
|
[profiles]: @docroot@/command-ref/files/profiles.md
|
|
[store objects]: @docroot@/store/store-object.md
|