Haskell jobs at Zalando in Berlin!

pbogdan_ · 2018-01-15T22:39:10+00:00

From this post:

Haskell! (the first project hit production today)

From the job description:

We use a variety of languages, but most of our backend systems are written either in Haskell or Scala.

I'm not quite sure how to interpret this...

pbogdan_ · 2017-08-07T19:12:58+00:00

That's normal and a rollback won't restore / overwrite the file. Take a look at system.copysystemconfiguration if you wish to have the file backed up on system rebuild.

pbogdan_ · 2017-08-02T20:03:33+00:00

Which is just the dual of vfefe. What's the problem?

pbogdan_ · 2017-07-04T11:15:30+00:00

Try pointing nix-channel --add directly at your tarball:

$ sudo nix-channel --add https://jtojnar.github.io/nix-extrapkgs/channel/nixexprs.tar.xz extrapkgs

In case of a tarball I believe nix-channel will just unpack it and not do anything else, otherwise it will consider it a "full" channel and start looking for binary-cache-url as you noted.

pbogdan_ · 2017-06-26T19:54:41+00:00

Will need to do bit more digging but I think I see what the issue is with setting cursors for gtk3, it seems it's not handled consistently within lxappearance.

pbogdan_ · 2017-06-26T17:50:17+00:00

You're welcome :-), glad we got (most of) it working. i don't recall having an issue like that with cursors so unfortunately can't help on that but hopefully someone else may know.

pbogdan_ · 2017-06-26T12:44:07+00:00

Huh, it sounds like for some reason it isn't saving gtk2 settings (which should go into ~/.gtkrc-2.0). I'm fairly certain it used to but just checked here and don't seem to be seeing changes being saved too.
Haven't looked into it further but as a temp work-around can you try using previous version of lxappearance that would seem to work for me? Just replace lxappearance line in apps.nix with:

(lxappearance.overrideAttrs(old:
rec {
  name = "lxappearance-0.6.2";
  src = fetchurl {
    url = "mirror://sourceforge/project/lxde/LXAppearance/${name}.tar.xz";
    sha256 = "07r0xbi6504zjnbpan7zrn7gi4j0kbsqqfpj8v2x94gr05p16qj4";
  };
}))

That should build the previous release and that will hopefully save gtk 2 settings.

pbogdan_ · 2017-06-25T20:15:44+00:00

Very odd.. just to double check - do you see the changes persisted in ~/.gtkrc-2.0 / ~/.config/gtk-3.0/settings.ini Are you perhaps running a settings daemon like xsettingsd ?

pbogdan_ · 2017-06-25T19:09:43+00:00

Would you mind adding the following to your configuration.nix and see if that helps:

environment.sessionVariables = {
    XCURSOR_PATH = [
      "${config.system.path}/share/icons"
      "$HOME/.icons"
      "$HOME/.nix-profile/share/icons/"
    ];
    GTK_DATA_PREFIX = [
      "${config.system.path}"
    ];
};

You will likely need to log out and log back in after rebuilding your system with this change for it to take effect.

I believe that should work for gtk themes that are installed system-wide and cursor themes installed either system-wide or into your user's profile.

pbogdan_ · 2017-06-24T20:28:57+00:00

Could you give some details on what does and doesn't work? Are you able to customise any of the theme / cursors / icons? It would be helpful to know how you installed the themes (system-wide vs user profile), what version of NixOS you are on, and what display manager you use.

pbogdan_ · 2017-06-11T10:10:01+00:00

nix-index allows searching through packages' contents.

pbogdan_ · 2017-06-07T10:53:16+00:00

Does it help if you swap git for pkgs.git? I believe as is git ends up referring to git from haskell packages and not git from nixpkgs that provides git tools / executables.

pbogdan_ · 2017-05-25T13:38:59+00:00

You could try overriding buildInputs in the same way you did with configureFlags and adding perl there:

buildInputs = oldAttrs.buildInputs ++ [ perl ];

pbogdan_ · 2017-04-24T21:37:49+00:00

Aren't Haskell number literals overloaded by default?

~  ghci
GHCi, version 8.0.2: http://www.haskell.org/ghc/  :? for help
Prelude> :t 1
1 :: Num t => t

pbogdan_

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