create scripts folder

scripts/bmenu.nix

@@ -0,0 +1,83 @@
+{ config, pkgs, lib, ... }:
+let inherit (pkgs.uservars) key theme color accent font;
+in pkgs.writeScriptBin "bmenu" ''
+  #!${pkgs.fish}/bin/fish
+
+  # wrapper around bemenu
+  # bmenu *       - use as dmenu, -p for custom prompt (man bemenu)
+  # bmenu run     - select from .desktop files and run it
+  # bmenu start   - internal option
+
+  set swaymsg ${pkgs.sway}/bin/swaymsg
+  set swaymsg ${pkgs.sway}/bin/swaymsg
+
+  if test "$argv[1]" = "run"
+      test -n "$argv[2]" && set t "$argv[2]" || set t "terminal"
+
+      test -n "$i3SOCK" && set wrapper 'i3-msg exec --'
+      test -n "$SWAYSOCK" && set wrapper 'swaymsg exec --'
+
+      exec ${pkgs.j4-dmenu-desktop}/bin/j4-dmenu-desktop \
+          --dmenu="bmenu start -p Iniciar:" \
+          --term "$t" \
+          --wrapper="$wrapper" \
+          --no-generic
+  end
+
+  if test -n "$SWAYSOCK"
+      swaymsg -t get_tree |
+          ${pkgs.jq}/bin/jq -je '..|select(.focused? and .fullscreen_mode? == 1)|""' &&
+          ${pkgs.sway}/bin/swaymsg -q fullscreen off &&
+          set fullscreen
+
+      ${pkgs.sway}/bin/swaymsg -t get_outputs |
+          ${pkgs.jq}/bin/jq -r 'map(.focused)|reverse|index(true)' |
+          read focused_output
+
+      test -n "$focused_output"
+      and set focused_output "-m $focused_output"
+  end
+
+  function clean_exit
+      set -q fullscreen
+      and swaymsg -q fullscreen on &
+  end
+
+  trap clean_exit EXIT
+
+  # t  title
+  # f  filter
+  # n  normal
+  # h  highlighted
+  # s  selected
+  # sc scrollbar
+
+      set fn "${font.mono} ${toString font.size.small}"
+
+      set tb "${color.bg}${theme.opacityHex}"
+      set tf "${accent.color}"
+
+      set fb "${color.bg}${theme.opacityHex}"
+      set ff "${color.txt}"
+
+      set nb "${color.bg}${theme.opacityHex}"
+      set nf "${color.txt}"
+      set hb "${accent.color}"
+      set hf "${accent.fg}"
+
+  ${pkgs.dhist}/bin/dhist wrap -- ${pkgs.bemenu}/bin/bemenu \
+      $focused_output\
+      --ignorecase\
+      --bottom\
+      --no-overlap\
+      --list 20\
+      --prefix '>'\
+      --fn "$fn"\
+      --tb "$tb" --tf "$tf" \
+      --fb "$fb" --ff "$ff" \
+      --nb "$nb" --nf "$nf" \
+      --hb "$hb" --hf "$hf" \
+      $argv
+
+  # vim: ft=fish
+''

scripts/default.nix

@@ -0,0 +1,6 @@
+{ config, lib, ... }: (_: pkgs: {
+  bmenu = import ./bmenu.nix { inherit config pkgs lib; };
+  _diffr = import ./diffr.nix { inherit config pkgs lib; };
+  kak-pager = import ./kak-pager.nix { inherit config pkgs lib; };
+  terminal = import ./terminal.nix { inherit config pkgs lib; };
+})

scripts/diffr.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, lib, ... }:
+pkgs.writeShellScriptBin "diffr" ''
+  exec ${pkgs.diffr}/bin/diffr \
+      --colors 'refine-added:foreground:green:underline' \
+      --colors 'refine-added:background:none' \
+      --colors 'refine-removed:foreground:red:underline' \
+      --colors 'refine-removed:background:none' \
+      --colors 'added:foreground:green' \
+      --colors 'added:background:none' \
+      --colors 'removed:foreground:red' \
+      --colors 'removed:background:none' \
+      $@
+''

scripts/kak-pager.nix

@@ -0,0 +1,36 @@
+{ config, pkgs, lib, ... }:
+pkgs.writeScriptBin "kak-pager" ''
+  #!/usr/bin/env fish
+
+  if test (count $argv) -ne 0
+      for i in $argv
+          cat "$i"
+      end | eval (status filename)
+      exit 0
+  end
+
+  set term_line_count (tput lines)
+
+  while read line
+      set -a input_lines "$line"
+
+      set input_line_count (printf "%s\n" $input_lines | wc -l)
+
+      if test "$term_line_count" -lt "$input_line_count"
+          begin
+              printf "%s\n" $input_lines
+              cat
+          end | kak -e '
+              exec <a-o>
+              map global normal q :q<ret>;
+              rmhl global/number-lines;
+              set global scrolloff 10,0;
+          '
+
+          exit 0
+      end
+
+  end
+
+  printf "%s\n" $input_lines
+''

scripts/terminal.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+pkgs.writeScriptBin "terminal" ''
+  #!/bin/sh
+
+  CLASS="terminal"
+
+  while test $# -gt 0;do
+      case $1 in
+          -c|--class)
+              shift
+              CLASS=$1
+              shift
+              ;;
+          *)
+              break
+              ;;
+      esac
+  done
+
+  test $# -gt 0 &&
+      exec alacritty --class "$CLASS" -e $@ ||
+      exec alacritty --class "$CLASS"
+''