feat(nix/wm): configure x session, xmonad, xmobar

.gitignore

@@ -23,3 +23,7 @@
 !/programs/alacritty
 /programs/alacritty/*
 !/programs/alacritty/alacritty.yml
+
+!/programs/xmonad
+/programs/xmonad/*
+!/programs/xmonad/*.hs

nix/home.nix

@@ -4,11 +4,30 @@ let
   secrets = import ./secrets.nix;
 in
 {
+  nixpkgs.overlays = [
+    (self: super: {
+      haskellPackages = super.haskellPackages.override {
+        overrides = hself: hsuper: {
+          xmonad = hsuper.xmonad_0_17_0;
+          xmonad-contrib = hsuper.xmonad-contrib_0_17_0;
+          xmonad-extras = hsuper.xmonad-extras_0_17_0;
+        };
+      };
+    })
+  ];
+
   # Home Manager needs a bit of information about you and the
   # paths it should manage.
   home.username = secrets.home.name;
   home.homeDirectory = secrets.home.dir;
 
+  home.keyboard = {
+    model = "pc105";
+    layout = "us,ru";
+    variant = "dvorak,";
+    options = ["grp:win_space_toggle"];
+  };
+
   # This value determines the Home Manager release that your
   # configuration is compatible with. This helps avoid breakage
   # when a new Home Manager release introduces backwards
@@ -19,12 +38,18 @@ in
   # changes in each release.
   home.stateVersion = "21.11";
 
-  home.packages = [
+  home.packages = with pkgs; [
-    pkgs.xh             # friendly and fast tool for sending HTTP requests
+    dmenu          # menu for x window system
-    pkgs.fd             # a simple, fast and user-friendly alternative to find
+    xmobar         # a minimalistic text based status bar
-    pkgs.bat            # a cat clone with syntax highlighting and git integration
+    flameshot      # powerful yet simple to use screenshot software
 
-    pkgs.postgresql_12  # 🤷 I need only psql
+    xh             # friendly and fast tool for sending HTTP requests
+    fd             # a simple, fast and user-friendly alternative to find
+    bat            # a cat clone with syntax highlighting and git integration
+
+    postgresql_12  # 🤷 I need only psql
+
+    librewolf      # a fork of firefox, focused on privacy, security and freedom
   ];
 
   home.sessionVariables = {
@@ -98,6 +123,24 @@ in
   };
 
   xdg.configFile = {
+    # add config for alacritty terminal
     "alacritty/alacritty.yml".source = ../programs/alacritty/alacritty.yml;
+
+    # add config for xmonad window manager
+    # "xmonad/xmonad.hs".source = ../programs/xmonad/xmonad.hs;
+    # "xmobar/xmobar.hs".source = ../programs/xmonad/xmobar.hs;
+  };
+
+  xsession = {
+    enable = true;
+
+    profileExtra = ''
+      systemctl --user restart setxkbmap.service
+    '';
+
+    windowManager.xmonad = {
+      enable = true;
+      enableContribAndExtras = true;
+    };
   };
 }

programs/xmonad/xmobar.hs

@@ -0,0 +1,21 @@
+Config { overrideRedirect = False
+        , font = "xft:Fira Code:size=12:antialias=true"
+        , bgColor  = "#5f5f5f"
+        , fgColor  = "#f8f8f2"
+        , position = Top
+        , commands = [ Run Cpu
+                        [ "-L", "3"
+                        , "-H", "50"
+                        , "--high"  , "red"
+                        , "--normal", "green"
+                        ] 10
+                     , Run Memory ["--template", "Mem: <usedratio>%"] 10
+                     , Run Swap [] 10
+                     , Run Date "%a %Y-%m-%d <fc=#8be9fd>%H:%M</fc>" "date" 10
+                     , Run XMonadLog
+                     ]
+        , sepChar  = "%"
+        , alignSep = "}{"
+        --, template = "%XMonadLog% }{ %alsa:default:Master% | %cpu% | %memory% * %swap% | %EGPF% | %date% "
+        , template = "%XMonadLog% }{ %cpu% | %memory% * %swap% | %date% "
+        }

programs/xmonad/xmonad.hs

@@ -0,0 +1,350 @@
+--
+-- xmonad example config file.
+--
+-- A template showing all available configuration hooks,
+-- and how to override the defaults in your own xmonad.hs conf file.
+--
+-- Normally, you'd only override those defaults you care about.
+--
+
+import XMonad
+import XMonad.Hooks.EwmhDesktops
+import XMonad.Hooks.ManageDocks
+import XMonad.Hooks.DynamicLog
+import XMonad.Hooks.StatusBar
+import XMonad.Hooks.StatusBar.PP
+import XMonad.Util.Run
+import Data.Monoid
+import System.Exit
+
+import qualified XMonad.StackSet as W
+import qualified Data.Map        as M
+
+-- The preferred terminal program, which is used in a binding below and by
+-- certain contrib modules.
+--
+-- myTerminal      = "xterm"
+myTerminal      = "alacritty"
+
+-- Whether focus follows the mouse pointer.
+myFocusFollowsMouse :: Bool
+myFocusFollowsMouse = True
+
+-- Whether clicking on a window to focus also passes the click to the window
+myClickJustFocuses :: Bool
+myClickJustFocuses = False
+
+-- Width of the window border in pixels.
+--
+myBorderWidth   = 1
+
+-- modMask lets you specify which modkey you want to use. The default
+-- is mod1Mask ("left alt").  You may also consider using mod3Mask
+-- ("right alt"), which does not conflict with emacs keybindings. The
+-- "windows key" is usually mod4Mask.
+--
+myModMask       = mod1Mask
+
+-- The default number of workspaces (virtual screens) and their names.
+-- By default we use numeric strings, but any string may be used as a
+-- workspace name. The number of workspaces is determined by the length
+-- of this list.
+--
+-- A tagging example:
+--
+-- > workspaces = ["web", "irc", "code" ] ++ map show [4..9]
+--
+myWorkspaces    = ["1","2","3","4","5","6","7","8","9"]
+
+-- Border colors for unfocused and focused windows, respectively.
+--
+myNormalBorderColor  = "#dddddd"
+myFocusedBorderColor = "#ff0000"
+
+------------------------------------------------------------------------
+-- Key bindings. Add, modify or remove key bindings here.
+--
+myKeys conf@(XConfig {XMonad.modMask = modm}) = M.fromList $
+
+    -- launch a terminal
+    [ ((modm .|. shiftMask, xK_Return), spawn $ XMonad.terminal conf)
+
+    -- launch dmenu
+    , ((modm,               xK_p     ), spawn "dmenu_run")
+
+    -- launch gmrun
+    , ((modm .|. shiftMask, xK_p     ), spawn "gmrun")
+
+    -- close focused window
+    , ((modm .|. shiftMask, xK_c     ), kill)
+
+     -- Rotate through the available layout algorithms
+    , ((modm,               xK_space ), sendMessage NextLayout)
+
+    --  Reset the layouts on the current workspace to default
+    , ((modm .|. shiftMask, xK_space ), setLayout $ XMonad.layoutHook conf)
+
+    -- Resize viewed windows to the correct size
+    , ((modm,               xK_n     ), refresh)
+
+    -- Move focus to the next window
+    , ((modm,               xK_Tab   ), windows W.focusDown)
+
+    -- Move focus to the next window
+    , ((modm,               xK_j     ), windows W.focusDown)
+
+    -- Move focus to the previous window
+    , ((modm,               xK_k     ), windows W.focusUp  )
+
+    -- Move focus to the master window
+    , ((modm,               xK_m     ), windows W.focusMaster  )
+
+    -- Swap the focused window and the master window
+    , ((modm,               xK_Return), windows W.swapMaster)
+
+    -- Swap the focused window with the next window
+    , ((modm .|. shiftMask, xK_j     ), windows W.swapDown  )
+
+    -- Swap the focused window with the previous window
+    , ((modm .|. shiftMask, xK_k     ), windows W.swapUp    )
+
+    -- Shrink the master area
+    , ((modm,               xK_h     ), sendMessage Shrink)
+
+    -- Expand the master area
+    , ((modm,               xK_l     ), sendMessage Expand)
+
+    -- Push window back into tiling
+    , ((modm,               xK_t     ), withFocused $ windows . W.sink)
+
+    -- Increment the number of windows in the master area
+    , ((modm              , xK_comma ), sendMessage (IncMasterN 1))
+
+    -- Deincrement the number of windows in the master area
+    , ((modm              , xK_period), sendMessage (IncMasterN (-1)))
+
+    -- Toggle the status bar gap
+    -- Use this binding with avoidStruts from Hooks.ManageDocks.
+    -- See also the statusBar function from Hooks.DynamicLog.
+    --
+    -- , ((modm              , xK_b     ), sendMessage ToggleStruts)
+
+    -- Quit xmonad
+    , ((mod4Mask .|. shiftMask, xK_q ), io (exitWith ExitSuccess))
+
+    -- Restart xmonad
+    , ((modm              , xK_q     ), spawn "xmonad --recompile; xmonad --restart")
+
+    -- Run xmessage with a summary of the default keybindings (useful for beginners)
+    , ((modm .|. shiftMask, xK_slash ), xmessage help)
+
+    -- Cut screenshot
+    , ((modm .|. shiftMask, xK_s     ), safeSpawn "flameshot" ["gui"])
+
+    ]
+    ++
+
+    --
+    -- mod-[1..9], Switch to workspace N
+    -- mod-shift-[1..9], Move client to workspace N
+    --
+    [((m .|. modm, k), windows $ f i)
+        | (i, k) <- zip (XMonad.workspaces conf) [xK_1 .. xK_9]
+        , (f, m) <- [(W.greedyView, 0), (W.shift, shiftMask)]]
+    ++
+
+    --
+    -- mod-{w,e,r}, Switch to physical/Xinerama screens 1, 2, or 3
+    -- mod-shift-{w,e,r}, Move client to screen 1, 2, or 3
+    --
+    [((m .|. modm, key), screenWorkspace sc >>= flip whenJust (windows . f))
+        | (key, sc) <- zip [xK_w, xK_e, xK_r] [0..]
+        , (f, m) <- [(W.view, 0), (W.shift, shiftMask)]]
+
+
+------------------------------------------------------------------------
+-- Mouse bindings: default actions bound to mouse events
+--
+myMouseBindings (XConfig {XMonad.modMask = modm}) = M.fromList $
+
+    -- mod-button1, Set the window to floating mode and move by dragging
+    [ ((modm, button1), (\w -> focus w >> mouseMoveWindow w
+                                       >> windows W.shiftMaster))
+
+    -- mod-button2, Raise the window to the top of the stack
+    , ((modm, button2), (\w -> focus w >> windows W.shiftMaster))
+
+    -- mod-button3, Set the window to floating mode and resize by dragging
+    , ((modm, button3), (\w -> focus w >> mouseResizeWindow w
+                                       >> windows W.shiftMaster))
+
+    -- you may also bind events to the mouse scroll wheel (button4 and button5)
+    ]
+
+------------------------------------------------------------------------
+-- Layouts:
+
+-- You can specify and transform your layouts by modifying these values.
+-- If you change layout bindings be sure to use 'mod-shift-space' after
+-- restarting (with 'mod-q') to reset your layout state to the new
+-- defaults, as xmonad preserves your old layout settings by default.
+--
+-- The available layouts.  Note that each layout is separated by |||,
+-- which denotes layout choice.
+--
+myLayout = avoidStruts (tiled ||| Mirror tiled ||| Full)
+  where
+     -- default tiling algorithm partitions the screen into two panes
+     tiled   = Tall nmaster delta ratio
+
+     -- The default number of windows in the master pane
+     nmaster = 1
+
+     -- Default proportion of screen occupied by master pane
+     ratio   = 1/2
+
+     -- Percent of screen to increment by when resizing panes
+     delta   = 3/100
+
+------------------------------------------------------------------------
+-- Window rules:
+
+-- Execute arbitrary actions and WindowSet manipulations when managing
+-- a new window. You can use this to, for example, always float a
+-- particular program, or have a client always appear on a particular
+-- workspace.
+--
+-- To find the property name associated with a program, use
+-- > xprop | grep WM_CLASS
+-- and click on the client you're interested in.
+--
+-- To match on the WM_NAME, you can use 'title' in the same way that
+-- 'className' and 'resource' are used below.
+--
+myManageHook = composeAll
+    [ className =? "MPlayer"        --> doFloat
+    , className =? "Gimp"           --> doFloat
+    , resource  =? "desktop_window" --> doIgnore
+    , resource  =? "kdesktop"       --> doIgnore ]
+
+------------------------------------------------------------------------
+-- Event handling
+
+-- * EwmhDesktops users should change this to ewmhDesktopsEventHook
+--
+-- Defines a custom handler function for X Events. The function should
+-- return (All True) if the default handler is to be run afterwards. To
+-- combine event hooks use mappend or mconcat from Data.Monoid.
+--
+myEventHook = mempty
+
+------------------------------------------------------------------------
+-- Status bars and logging
+
+-- Perform an arbitrary action on each internal state change or X event.
+-- See the 'XMonad.Hooks.DynamicLog' extension for examples.
+--
+myLogHook = return ()
+
+------------------------------------------------------------------------
+-- Startup hook
+
+-- Perform an arbitrary action each time xmonad starts or is restarted
+-- with mod-q.  Used by, e.g., XMonad.Layout.PerWorkspace to initialize
+-- per-workspace layout choices.
+--
+-- By default, do nothing.
+myStartupHook = return ()
+
+------------------------------------------------------------------------
+-- Now run xmonad with all the defaults we set up.
+
+-- Run xmonad with the settings you specify. No need to modify this.
+--
+main = xmonad . ewmhFullscreen . ewmh . xmobarProp $ defaults
+
+-- A structure containing your configuration settings, overriding
+-- fields in the default config. Any you don't override, will
+-- use the defaults defined in xmonad/XMonad/Config.hs
+--
+-- No need to modify this.
+--
+defaults = def {
+      -- simple stuff
+        terminal           = myTerminal,
+        focusFollowsMouse  = myFocusFollowsMouse,
+        clickJustFocuses   = myClickJustFocuses,
+        borderWidth        = myBorderWidth,
+        modMask            = myModMask,
+        workspaces         = myWorkspaces,
+        normalBorderColor  = myNormalBorderColor,
+        focusedBorderColor = myFocusedBorderColor,
+
+      -- key bindings
+        keys               = myKeys,
+        mouseBindings      = myMouseBindings,
+
+      -- hooks, layouts
+        layoutHook         = myLayout,
+        manageHook         = myManageHook,
+        handleEventHook    = myEventHook,
+        logHook            = myLogHook,
+        startupHook        = myStartupHook
+    }
+
+-- | Finally, a copy of the default bindings in simple textual tabular format.
+help :: String
+help = unlines ["The default modifier key is 'alt'. Default keybindings:",
+    "## CUSTOM",
+    "-- Screenshot",
+    "mod-Shift-s      Launch 'flameshot' to screenshot",
+    "",
+    "## DEFAULT",
+    "-- launching and killing programs",
+    "mod-Shift-Enter  Launch xterminal",
+    "mod-p            Launch dmenu",
+    "mod-Shift-p      Launch gmrun",
+    "mod-Shift-c      Close/kill the focused window",
+    "mod-Space        Rotate through the available layout algorithms",
+    "mod-Shift-Space  Reset the layouts on the current workSpace to default",
+    "mod-n            Resize/refresh viewed windows to the correct size",
+    "mod-Shift-/      Show this help message with the default keybindings",
+    "",
+    "-- move focus up or down the window stack",
+    "mod-Tab        Move focus to the next window",
+    "mod-Shift-Tab  Move focus to the previous window",
+    "mod-j          Move focus to the next window",
+    "mod-k          Move focus to the previous window",
+    "mod-m          Move focus to the master window",
+    "",
+    "-- modifying the window order",
+    "mod-Return   Swap the focused window and the master window",
+    "mod-Shift-j  Swap the focused window with the next window",
+    "mod-Shift-k  Swap the focused window with the previous window",
+    "",
+    "-- resizing the master/slave ratio",
+    "mod-h  Shrink the master area",
+    "mod-l  Expand the master area",
+    "",
+    "-- floating layer support",
+    "mod-t  Push window back into tiling; unfloat and re-tile it",
+    "",
+    "-- increase or decrease number of windows in the master area",
+    "mod-comma  (mod-,)   Increment the number of windows in the master area",
+    "mod-period (mod-.)   Deincrement the number of windows in the master area",
+    "",
+    "-- quit, or restart",
+    "mod-Shift-q  Quit xmonad",
+    "mod-q        Restart xmonad",
+    "mod-[1..9]   Switch to workSpace N",
+    "",
+    "-- Workspaces & screens",
+    "mod-Shift-[1..9]   Move client to workspace N",
+    "mod-{w,e,r}        Switch to physical/Xinerama screens 1, 2, or 3",
+    "mod-Shift-{w,e,r}  Move client to screen 1, 2, or 3",
+    "",
+    "-- Mouse bindings: default actions bound to mouse events",
+    "mod-button1  Set the window to floating mode and move by dragging",
+    "mod-button2  Raise the window to the top of the stack",
+    "mod-button3  Set the window to floating mode and resize by dragging"]
+