[Nix-dev] garbage-collection of the last 'n' generations

[Profpatsch]

On 17-03-30 02:42pm, Azul wrote:
> Hi there,
> 
> I would like to cleanup my oldest  'n' nix generations.
> 
> nix-collect-garbage seems to only provide me with a older than 'n' days
> option.
> 
> Any quick hacks to clean everything but keep my recent  'n' generations ?

Remove all system links from /nix/var/nix/profiles that you don’t want
    for i in $(seq 100 142); do rm "/nix/var/nix/profiles/system-$i-link"; done

Then perform a garbage collection
    nix-store --gc

This works for all kinds of profiles (e.g. the result link from nix-build).

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