[Nix-dev] Correct XMonad Configuration

[Taeer Bar-Yam]

Correction: perhaps this will help: https://github.com/NixOS/nixos/issues/194
That is, try adding pkgs.xlibs.xmessage to environment.systemPackages
  --Taeer
> On Jan 11, 2016, at 11:39 AM, Taeer Bar-Yam <tb442 at cornell.edu> wrote:
> 
> Are you on the unstable channel? You might want to consider switching to it.
> Using:
> $ nix-channel --remove nixos
> $ nix-channel --add https://nixos.org/channels/nixos-unstable nixos
> 
> I ran into the same exact issue, and I'm pretty sure there was a workaround using the stable channel (which I don't remember, sorry), but that this problem has been actually fixed in the unstable channel, and in fact, this is my entire xmonad setup (in configuration.nix):
>    windowManager.default = "xmonad";
>    windowManager.xmonad = {
>      enable = true;
>      enableContribAndExtras = true;
>    };
> I don't even need extraPackages.
> 
> Hope that helps,
>  --Taeer
> 
>> On Jan 10, 2016, at 10:05 AM, Sergiu Ivanov <sivanov at colimite.fr> wrote:
>> 
>> 
>> Dear NixOS Community,
>> 
>> My name is Sergiu; I teach Computer Science and do research in
>> Theoretical Computer Science.  I have some experience with Haskell
>> development.  I came across NixOS quite some time ago and now I finally
>> have the opportunity to install it and maybe even try to contribute :-)
>> 
>> I attach my configuration.nix; here's the XMonad-related snippet:
>> 
>> 
>> services.xserver.windowManager.xmonad = {
>>   enable = true;
>>   enableContribAndExtras = true;
>>   extraPackages = self: [
>>     self.xmonad-contrib
>>     self.xmonad-extras
>>   ];
>> };
>> 
>> 
>> When I try to xmonad --recompile the following xmonad.hs:
>> 
>> 
>> import XMonad
>> main = xmonad defaultConfig
>>        { terminal = "termite"
>>        , modMask = mod4Mask
>>        , focusedBorderColor = "blue"
>>        }
>> 
>> 
>> I get the error message that the module XMonad could not be found.
>> 
>> I would like to minimise the number of Haskell packages installed at the
>> system level, so I don't add any to environment.systemPackages.  Yet,
>> adding xmonad, xmonad-contrib, and xmonad-extras to
>> environment.systemPackages (and haskellPlatform, FWIW) doesn't change
>> anything for me (I still get the error).
>> 
>> I tried cabal installing xmonad, xmonad-contrib, and xmonad-extras in a
>> Cabal sandbox, but I got an error about missing X11 libraries.
>> 
>> I haven't tried ghcWithPackages yet, because I'm really not sure it's
>> going to help me: after all, I'm not compiling my xmonad.hs with GHC (at
>> least I don't seem to be).  And then people seem to have been able to
>> address the issue without ghcWithPackages [0].
>> 
>> Do you see anything flagrant with my setup?
>> 
>> -- 
>> Sergiu
>> 
>> <configuration.nix>
>> [0] https://github.com/NixOS/nixos/issues/194
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>