1 files changed, 146 insertions, 0 deletions
diff --git a/home-manager/modules/programs/fzf.nix b/home-manager/modules/programs/fzf.nix
new file mode 100644
index 00000000000..3aee57768ea
--- /dev/null
+++ b/home-manager/modules/programs/fzf.nix
@@ -0,0 +1,146 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.programs.fzf;
+
+in {
+  options.programs.fzf = {
+    enable = mkEnableOption "fzf - a command-line fuzzy finder";
+
+    defaultCommand = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      example = "fd --type f";
+      description = ''
+        The command that gets executed as the default source for fzf
+        when running.
+      '';
+    };
+
+    defaultOptions = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      example = [ "--height 40%" "--border" ];
+      description = ''
+        Extra command line options given to fzf by default.
+      '';
+    };
+
+    fileWidgetCommand = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      example = "fd --type f";
+      description = ''
+        The command that gets executed as the source for fzf for the
+        CTRL-T keybinding.
+      '';
+    };
+
+    fileWidgetOptions = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      example = [ "--preview 'head {}'" ];
+      description = ''
+        Command line options for the CTRL-T keybinding.
+      '';
+    };
+
+    changeDirWidgetCommand = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      example = "fd --type d";
+      description = ''
+        The command that gets executed as the source for fzf for the
+        ALT-C keybinding.
+      '';
+    };
+
+    changeDirWidgetOptions = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      example = [ "--preview 'tree -C {} | head -200'" ];
+      description = ''
+        Command line options for the ALT-C keybinding.
+      '';
+    };
+
+    historyWidgetCommand = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      description = ''
+        The command that gets executed as the source for fzf for the
+        CTRL-R keybinding.
+      '';
+    };
+
+    historyWidgetOptions = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      example = [ "--sort" "--exact" ];
+      description = ''
+        Command line options for the CTRL-R keybinding.
+      '';
+    };
+
+    enableBashIntegration = mkOption {
+      default = true;
+      type = types.bool;
+      description = ''
+        Whether to enable Bash integration.
+      '';
+    };
+
+    enableZshIntegration = mkOption {
+      default = true;
+      type = types.bool;
+      description = ''
+        Whether to enable Zsh integration.
+      '';
+    };
+
+    enableFishIntegration = mkOption {
+      default = true;
+      type = types.bool;
+      description = ''
+        Whether to enable Fish integration.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ pkgs.fzf ];
+
+    home.sessionVariables = mapAttrs (n: v: toString v)
+      (filterAttrs (n: v: v != [ ] && v != null) {
+        FZF_ALT_C_COMMAND = cfg.changeDirWidgetCommand;
+        FZF_ALT_C_OPTS = cfg.changeDirWidgetOptions;
+        FZF_CTRL_R_COMMAND = cfg.historyWidgetCommand;
+        FZF_CTRL_R_OPTS = cfg.historyWidgetOptions;
+        FZF_CTRL_T_COMMAND = cfg.fileWidgetCommand;
+        FZF_CTRL_T_OPTS = cfg.fileWidgetOptions;
+        FZF_DEFAULT_COMMAND = cfg.defaultCommand;
+        FZF_DEFAULT_OPTS = cfg.defaultOptions;
+      });
+
+    programs.bash.initExtra = mkIf cfg.enableBashIntegration ''
+      if [[ :$SHELLOPTS: =~ :(vi|emacs): ]]; then
+        . ${pkgs.fzf}/share/fzf/completion.bash
+        . ${pkgs.fzf}/share/fzf/key-bindings.bash
+      fi
+    '';
+
+    programs.zsh.initExtra = mkIf cfg.enableZshIntegration ''
+      if [[ $options[zle] = on ]]; then
+        . ${pkgs.fzf}/share/fzf/completion.zsh
+        . ${pkgs.fzf}/share/fzf/key-bindings.zsh
+      fi
+    '';
+
+    programs.fish.shellInit = mkIf cfg.enableFishIntegration ''
+      source ${pkgs.fzf}/share/fzf/key-bindings.fish && fzf_key_bindings
+    '';
+  };
+}