[Nix-dev] duplicate packages?

[Daniel Hlynskyi]

Have you run sudo nix-collect-garbage -d ? Even If yes, you still have to
check all gc roots to belong to system, and not to side nix-builds

4 серп. 2016 11:58 дп "Roland Koebler" <rk-list at simple-is-better.org> пише:

> Hi,
>
> I have Nix running on Debian with the default channel [*], and I noticed,
> that -- although I only have a few packages installed -- many dependencies
> are installed several times. I would like to understand, why.
>
> [*] https://nixos.org/channels/nixpkgs-unstable nixpkgs
>
>
> 1. Many packages are installed several times with the same version
>    number, e.g.:
>
>    2pa9z1h2m0pyik4hr1ikfl6jvdg8j4pb-acl-2.2.52
>    8c5s33f5mzfn9z3yhjprxnxzl19dg7p2-acl-2.2.52
>    sk0b1r840b686zc2m8mzyw8yyq1aymqh-acl-2.2.52
>
>    4vgjwvgf24jl3czzksai6mwsklvhgs4k-attr-2.4.47
>    8z667vv1agvpd3iknmk94j0ix6bv413i-attr-2.4.47
>    m8qi9jrz51lqn7x0mifa9kpwpsp3b7dq-attr-2.4.47
>
>    fxkm8r0vpv88ld82jz0a00sjvh342wfl-avahi-0.6.31
>    p817p19niamk0f06r5wvqvdqnym96r7w-avahi-0.6.31
>    5wi7ja71s4wdjkzfghc4lkwrwc45fnf9-avahi-0.6.32
>
>    d20f169ryps7ds2qak0r5n1f4hhxr80h-bash-4.3-p42
>    d44582rghk696yw704sh5nbvbpnm69iv-bash-4.3-p42
>    xag5ayq906w9zhlxs8wayv4kvpiyqphq-bash-4.3-p42
>
>    0y480sh5b4hny3iq8fy3ppha0zllxxaw-boehm-gc-7.2f
>    bw1p8rairfwv2yif2g1cc0yg8hv25mnl-boehm-gc-7.2f
>    f24zx1r39kalz01q9kw7zcg1ngj7w2db-boehm-gc-7.2f
>
>    98s2znxww6x7h2ch7cj1w5givahxmdna-glibc-2.23
>    phffgv3pwihmpdyk8xsz3wv8ydysch8w-glibc-2.23
>
>    ...
>
>    I know that different build-inputs result in different hashes, but I
>    would have expected a more homogeneous structure in nixpkgs (e.g.
>    only one acl-2.2.52 in nixpkgs and not several ones), so that
>    I don't need e.g. 3 times acl-2.2.52 or bash-4.3-p42.
>
>    Is this because I use nixpkgs-unstable, and everything is moving
>    there, and is this reduced in the NixOS-release-channels?
>    Or is there some other reason?
>
> 2. Is there a way to clean this up?
>    Either in the repository or locally?
>    Or is there a reason why this should not be cleaned up?
>
> 3. Is there a simple way to find the nix-expression (e.g.
>    default.nix-file) of an installed package / a path in
>    the nix-store?
>    And is there a way to know which directory in the nix-store
>    belongs to which .drv-file?
>
>
> thanks,
> Roland
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