nix-config/home/tmux/default.nix

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{ config, lib, pkgs, ... }:
let
cfg = config.my.home.tmux;
hasGUI = lib.any lib.id [
config.my.home.x.enable
(config.my.home.wm.windowManager != null)
];
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in
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{
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options.my.home.tmux = with lib; {
enable = my.mkDisableOption "tmux terminal multiplexer";
enabledPassthrough = mkEnableOption "tmux DCS passthrough sequence";
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};
config.programs.tmux = lib.mkIf cfg.enable {
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enable = true;
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keyMode = "vi"; # Home-row keys and other niceties
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clock24 = true; # I'm one of those heathens
escapeTime = 0; # Let vim do its thing instead
historyLimit = 50000; # Bigger buffer
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terminal = "tmux-256color"; # I want accurate termcap info
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plugins = with pkgs.tmuxPlugins; [
# Open high-lighted files in copy mode
open
# Better pane management
pain-control
# Better session management
sessionist
{
# X clipboard integration
plugin = yank;
extraConfig = ''
# Use 'clipboard' because of misbehaving apps (e.g: firefox)
set -g @yank_selection_mouse 'clipboard'
# Stay in copy mode after yanking
set -g @yank_action 'copy-pipe'
'';
}
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{
# Show when prefix has been pressed
plugin = prefix-highlight;
extraConfig = ''
# Also show when I'm in copy or sync mode
set -g @prefix_highlight_show_copy_mode 'on'
set -g @prefix_highlight_show_sync_mode 'on'
# Show prefix mode in status bar
set -g status-right '#{prefix_highlight} %a %Y-%m-%d %H:%M'
'';
}
];
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extraConfig = ''
# Better vim mode
bind-key -T copy-mode-vi 'v' send -X begin-selection
${
lib.optionalString
(!hasGUI)
"bind-key -T copy-mode-vi 'y' send -X copy-selection"
}
# Block selection in vim mode
bind-key -Tcopy-mode-vi 'C-v' send -X begin-selection \; send -X rectangle-toggle
# Allow any application to send OSC52 escapes to set the clipboard
set -s set-clipboard on
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# Longer session names in status bar
set -g status-left-length 16
${
lib.optionalString cfg.enabledPassthrough ''
# Allow any application to use the tmux DCS for passthrough
set -g allow-passthrough on
''
}
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'';
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};
}