From ca7868dc2977e2bdb4b1c909768c686d4ec0a412 Mon Sep 17 00:00:00 2001
From: Hans <laderud@hotmail.com>
Date: Sun, 2 May 2021 00:10:41 +0200
Subject: [PATCH] fzf: option for tmux usage in shell integration (#1926)

Added options for setting:
FZF_TMUX
FZF_TMUX_OPTS
environment variables, which changes behaviour of fzf shell integration.
---
 modules/programs/fzf.nix | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/modules/programs/fzf.nix b/modules/programs/fzf.nix
index f945c7d4d..9f1c6522d 100644
--- a/modules/programs/fzf.nix
+++ b/modules/programs/fzf.nix
@@ -88,6 +88,23 @@ in {
       '';
     };
 
+    tmux = {
+      enableShellIntegration = mkEnableOption ''
+        setting <literal>FZF_TMUX=1</literal> which causes shell integration to use fzf-tmux
+      '';
+
+      shellIntegrationOptions = mkOption {
+        type = types.listOf types.str;
+        default = [ ];
+        example = literalExample ''[ "-d 40%" ]'';
+        description = ''
+          If <option>programs.fzf.tmux.enableShellIntegration</option> is set to <literal>true</literal>,
+          shell integration will use these options for fzf-tmux.
+          See <command>fzf-tmux --help</command> for available options.
+        '';
+      };
+    };
+
     enableBashIntegration = mkOption {
       default = true;
       type = types.bool;
@@ -125,6 +142,8 @@ in {
         FZF_CTRL_T_OPTS = cfg.fileWidgetOptions;
         FZF_DEFAULT_COMMAND = cfg.defaultCommand;
         FZF_DEFAULT_OPTS = cfg.defaultOptions;
+        FZF_TMUX = if cfg.tmux.enableShellIntegration then "1" else null;
+        FZF_TMUX_OPTS = cfg.tmux.shellIntegrationOptions;
       });
 
     programs.bash.initExtra = mkIf cfg.enableBashIntegration ''