[Nix-dev] A few questions from a NixOS newbie.

[Kirill Elagin]

Right, pretty cool, but still needs a sane frontend. I mean, JSON is way
better than, say, XML, but…
And the problem with nix-env is that it's damn slow (not as slow as
`emerge` of course, but way slower than `eix`).

I was going to write something like `eix` for Nix but unfortunately I don't
have enough time. It would be great is someone did this.


--
Кирилл Елагин


On Mon, Apr 21, 2014 at 6:25 PM, Bjørn Forsman <bjorn.forsman at gmail.com>wrote:

> On 21 April 2014 15:35, Kirill Elagin <kirelagin at gmail.com> wrote:
> > If there was a way to
> >
> > 1. run nix-repl non-interactively,
> > 2. list variables in scope
> >
> > that would be a fine replacement for grepping and opening files…
> >
> > Something like `nix-repl ':l <nixpkgs>; :scope' | grep foo` and `nix-repl
> > ':l <nixpkgs>; :p foo.meta`.
>
> Running nix-repl non-interactively:
>
> $ printf ":l <nixpkgs>\n:p wireshark.meta" | nix-repl
> Welcome to Nix version 1.7. Type :? for help.
>
> nix-repl> :l <nixpkgs>
> Added 3747 variables.
>
> nix-repl> :p wireshark.meta
> { description = "a powerful network protocol analyzer"; homepage =
> "http://www.wireshark.org/"; license = { fullName = "GNU General
> Public License version 2"; shortName = "GPLv2"; url =
> "http://www.gnu.org/licenses/old-licenses/gpl-2.0.html"; };
> longDescription = "Wireshark (formerly known as \"Ethereal\") is a
> powerful network\nprotocol analyzer developed by an international team
> of networking\nexperts. It runs on UNIX, OS X and Windows.\n";
> maintainers = [ "Peter Simons <simons at cryp.to>" ]; platforms = [
> "i686-linux" "x86_64-linux" "armv5tel-linux" "armv7l-linux"
> "mips64el-linux" ]; position =
>
> "/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/applications/networking/sniffers/wireshark/default.nix:47";
> }
>
>
> It's not as user friendly as e.g. "apt-get show wireshark" on
> Debian/Ubuntu :-)
>
>
> Hm, I just tested the new --json option for nix-env. Look at this
> (plesently surprised):
>
> $ nix-env -qaP --json wireshark | json_pp
> {
>    "nixos.pkgs.wireshark" : {
>       "system" : "x86_64-linux",
>       "name" : "wireshark-1.11.2",
>       "meta" : {
>          "longDescription" : "Wireshark (formerly known as
> \"Ethereal\") is a powerful network\nprotocol analyzer developed by an
> international team of networking\nexperts. It runs on UNIX, OS X and
> Windows.\n",
>          "homepage" : "http://www.wireshark.org/",
>          "platforms" : [
>             "i686-linux",
>             "x86_64-linux",
>             "armv5tel-linux",
>             "armv7l-linux",
>             "mips64el-linux"
>          ],
>          "maintainers" : [
>             "Peter Simons <simons at cryp.to>"
>          ],
>          "position" :
>
> "/nix/store/sv3pqp26qkiviq0rk2dgpaj6a1csaf3a-nixos-14.04pre42244.4160e65/nixos/nixpkgs/pkgs/applications/networking/sniffers/wireshark/default.nix:47",
>          "license" : {
>             "fullName" : "GNU General Public License version 2",
>             "url" : "http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
> ",
>             "shortName" : "GPLv2"
>          },
>          "description" : "a powerful network protocol analyzer"
>       }
>    }
> }
>
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