2025-07-29 13:59:55 +10:00
|
|
|
```bash
|
|
|
|
|
# fenix repl (default)
|
|
|
|
|
nix repl --expr "import <nixpkgs>{}" pkgs
|
|
|
|
|
# fenix repl --nopkgs
|
|
|
|
|
nix repl
|
|
|
|
|
|
|
|
|
|
# fenix src FUNC (maybe a different name then src?)
|
|
|
|
|
fenix repl <<< ":e $FUNC"
|
2025-08-01 00:56:19 +10:00
|
|
|
|
|
|
|
|
# fenix clean
|
|
|
|
|
nix-store --gc # aka nixos-collect-garbage
|
2025-07-29 13:59:55 +10:00
|
|
|
```
|
2025-08-01 00:56:19 +10:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Notes
|
|
|
|
|
#### Useful Tricks
|
|
|
|
|
The path `/nix/var/nix/profiles/per-user/root/channels/` seems to be where
|
|
|
|
|
Nix clones the git repos for chosen channels. Could be useful instead
|
|
|
|
|
of querying `search.nixos.org`.
|
|
|
|
|
|
|
|
|
|
#### "Alias" Commands
|
|
|
|
|
The tool `nix-collect-garbage` (as per `man nix-collect garbage`):
|
|
|
|
|
> ...is mostly an alias of nix-store --gc ⟨../command-ref/nix-store/gc.md⟩.
|
|
|
|
|
> That is, it deletes all unreachable store objects ⟨../store/store-object.md⟩
|
|
|
|
|
> 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 ⟨../command-ref/files/profiles.md⟩, allowing potentially more
|
|
|
|
|
> store objects ⟨../store/store-object.md⟩ to be deleted because profiles are
|
|
|
|
|
> also garbage collection roots.
|
|
|
|
|
|
|
|
|
|
> These options are the equivalent of running nix-env --delete-generations
|
|
|
|
|
> ⟨../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.
|
