[xmonad] Full example of IndependentScreens

[wagnerdm at seas.upenn.edu]

Great! Now that there's some code to critique, I can help a bit. =)

To fix the scoping errors:

import qualified Data.Map as M
import qualified XMonad.StackSet as W

You'll also want to make these changes:

On the line defining myKeys, make sure you keep the keys from the  
default configuration:

myKeys conf@(...as before...) = keys defaultConfig `M.union` M.fromList
     [ ...as before... ]

Also, as mentioned in the documentation, you'll want to use  
workspaces' instead of XMonad.workspaces when defining your  
keybindings, so change that line to:
         | (i, k) <- zip (workspaces' conf) [xK_1 .. xK_9]

Additionally, I expect that IndependentScreens is mostly useless if  
you have only one screen. I don't know how many screens you do have,  
but assuming it's two, the line inside of main should look like this:

         , workspaces = withScreens 2 ["Monitor", "Work"]

If you have three screens, change the 2 to 3, etc. Finally, you have  
to make sure to inform xmonad of your custom bindings in myKeys, so  
add a line right after that like this:

         , keys = myKeys

Good luck! Let us know how it goes after these changes.
~d

Quoting Ola Karlsson <skalle.karlsson at gmail.com>:

> Hi Linux..
>
> Thx for answering my newbie questions.. Haskell is something brand new and
> strange to me so am just hacking around at random in the config.hs with
> little luck..
>
> Did read the usage part and ended up with this config...
>
> import XMonad
> import XMonad.Config.Gnome
> import XMonad.Layout.IndependentScreens
> myKeys conf@(XConfig {XMonad.modMask = modMask}) = M.fromList $
>
> --      ++
>       [ ((m .|. modMask, k ), windows $ f i)
>               | (i, k) <- zip (XMonad.workspaces conf) [xK_1 .. xK_9]
>               , (f,m) <- [(W.greedyView, 0), (W.shift, shiftMask)]]
>
>
> main = xmonad gnomeConfig
>         { terminal = "urxvt -rv +sb"
>         , modMask = mod4Mask
>         , workspaces = withScreens 1 ["Monitor" , "Work"]
>         }
>
> With this I end up with
>
> xmonad.hs:5:51: Not in scope: `M.fromList'
>
> xmonad.hs:10:15: Not in scope: `W.greedyView'
>
> xmonad.hs:10:34: Not in scope: `W.shift'
>
> And am stuck.. :(
>
> /Ola
>
>
> On Thu, Apr 7, 2011 at 3:09 PM, Linus Arver <linusarver at gmail.com> wrote:
>
>> >    Have one problem though , Multiple Screens , can't wrap my head around
>> how
>> >    xmonad handles that default and want to go for the way I'm used to
>> have it
>> >    work with separate workspaces for each screen..
>>
>> In Xmonad, there are N workspaces (you can define as many as you like).
>> Most people have 9 of them, because that's the default config. I
>> personally have 22 workspaces (hotkeyed to modm + 1-9, F1-F12). Each
>> workspace can have N windows in it. Anyway, each screen (monitor) can
>> view any 1 workspace at a time. That's all there's to it...
>>
>> >    Found the IndependentScreens thing in the documentation but can't
>> figure
>> >    out how to get it in the configuration so needs some help..
>>
>> The "Usage" section at
>>
>> http://xmonad.org/xmonad-docs/xmonad-contrib/XMonad-Layout-IndependentScreens.html
>> seems to have everything you're looking for. After editing your
>> xmonad.hs, just run "ghci" on it: ghci xmonad.hs. If you get any errors,
>> then your config is messed up.
>>
>> >    Could someone give me a working example of a Gnome enables xmonad
>> config
>> >    that uses IndependentScreens?
>>
>> A quick google search got me this:
>> http://www.haskell.org/pipermail/xmonad/2009-December/009466.html
>> Maybe you should ask the user there about it...
>>
>> Personally though, I'd just stick with the default. There are lots of
>> neat contrib modules out there (e.g., CycleWS) that rely on the default
>> setup (1 set of workspaces). You'd have to hack all of those modules to
>> get them working with your IndependentScreens setup.
>>
>> -Linus
>>
>