add tmux

programs/default.nix

@@ -1,4 +1,5 @@
 [
   ./git
 #  ./neovim
+  ./tmux
 ]

programs/neovim/init.lua

@@ -38,6 +38,7 @@ local function load_plugins()
     use 'gennaro-tedesco/nvim-jqx'
     use 'kristijanhusak/orgmode.nvim'
     use 'p00f/nvim-ts-rainbow'
+    use 'christoomey/vim-tmux-navigator'
   end)
 end
 

programs/tmux/default.nix

@@ -0,0 +1,38 @@
+{ config, pkgs, ... }:
+
+let
+  tmuxConfig = builtins.readFile ./tmux.conf;
+
+in
+{
+  programs.tmux = {
+    enable = true;
+    baseIndex = 1;
+    escapeTime = 10;
+    historyLimit = 10000;
+    keyMode = "vi";
+    prefix = "C-a";
+    terminal = "xterm-256color";
+    extraConfig = tmuxConfig;
+    plugins = with pkgs; [
+      {
+        plugin = tmuxPlugins.resurrect;
+        extraConfig = "set -g @resurrect-strategy-nvim 'session'";
+      }
+      {
+        plugin = tmuxPlugins.continuum;
+        extraConfig = "set -g @continuum-restore 'on'";
+      }
+      {
+        plugin = tmuxPlugins.sensible;
+      }
+      {
+        plugin = tmuxPlugins.vim-tmux-navigator;
+      }
+      {
+        plugin = tmuxPlugins.onedark-theme;
+      }
+    ];
+  };
+}
+

programs/tmux/tmux.conf

@@ -0,0 +1,110 @@
+##########################
+#  Configuration
+###########################
+
+# use 256 xterm for pretty colors. This enables same colors from iTerm2 within tmux.
+# This is recommended in neovim :healthcheck
+# set -g default-terminal "screen-256color"
+# set -ga terminal-overrides ",xterm-256color:Tc"
+
+# disable mouse
+set -g mouse off
+
+# decrease command delay (increases vim responsiveness)
+set -sg escape-time 1
+
+# increase repeat time for repeatable commands
+set -g repeat-time 1000
+
+# start pane index at 1 instead of 0
+setw -g pane-base-index 1
+
+# highlight window when it has new activity
+setw -g monitor-activity on
+set -g visual-activity on
+
+# re-number windows when one is closed
+set -g renumber-windows on
+
+# enable pbcopy and pbpaste
+# https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard/blob/master/README.md
+# set-option -g default-command "reattach-to-user-namespace -l zsh"
+
+###########################
+#  Key Bindings
+###########################
+
+# Tmux prefix
+# Current solution is to keep the default
+# and have term map C-; to C-b. This is the nicest
+# bind I've found and this is the only way to enable it in tmux
+# unbind C-b
+# set -g prefix C-a
+# bind C-a send-prefix
+
+# Copy vim style
+# create 'v' alias for selecting text
+bind Escape copy-mode
+bind C-[ copy-mode
+bind -T copy-mode-vi 'v' send -X begin-selection
+# copy with 'enter' or 'y' and send to mac os clipboard: http://goo.gl/2Bfn8
+unbind -T copy-mode-vi Enter
+bind -T copy-mode-vi Enter send -X copy-pipe-and-cancel "reattach-to-user-namespace pbcopy"
+bind -T copy-mode-vi 'y' send -X copy-pipe-and-cancel "reattach-to-user-namespace pbcopy"
+# paste
+bind p paste-buffer
+# paste from system clipboard MacOS
+# bind C-v run \"tmux set-buffer \"$(reattach-to-user-namespace pbpaste)\"; tmux paste-buffer"
+
+# panes: window splitting 
+unbind %
+bind | split-window -h
+unbind '"'
+bind - split-window -v
+
+# Switch panes with hjkl
+bind h select-pane -L
+bind j select-pane -D
+bind k select-pane -U
+bind l select-pane -R
+
+# Quick window selection
+bind -r C-h select-window -t :-
+bind -r C-l select-window -t :+
+
+# resize panes
+bind -r H resize-pane -L 5
+bind -r J resize-pane -D 5
+bind -r K resize-pane -U 5
+bind -r L resize-pane -R 5
+
+## Quickly switch panes
+unbind ^J
+bind ^J select-pane -t :.+
+
+############################
+## Status Bar
+############################
+
+# enable UTF-8 support in status bar
+set -gq status-utf8 on
+
+# center the status bar
+set -g status-justify centre
+
+# show session, window, pane in left status bar
+set -g status-left-length 40
+set -g status-left '#[fg=green] #S #[fg=yellow]#I/#[fg=cyan]#P '
+
+# update status bar info
+set -g status-interval 60
+
+###########################
+# Colors
+###########################
+
+# onedark color scheme
+set -g @onedark_widgets "#(date +%s)"
+set -g @onedark_time_format "%I:%M %p"
+set -g @onedark_date_format "%D"
+