Merge pull request #200752 from laalsaas/fzf

nixos/doc/manual/from_md/release-notes/rl-2305.section.xml

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     <itemizedlist spacing="compact">
       <listitem>
         <para>
-          Create the first release note entry in this section!
+          <link xlink:href="https://github.com/junegunn/fzf">fzf</link>,
+          a command line fuzzyfinder. Available as
+          <link linkend="opt-programs.fzf.fuzzyCompletion">programs.fzf</link>.
         </para>
       </listitem>
     </itemizedlist>

nixos/doc/manual/release-notes/rl-2305.section.md

···
 
 <!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->
 
-- Create the first release note entry in this section!
+- [fzf](https://github.com/junegunn/fzf), a command line fuzzyfinder. Available as [programs.fzf](#opt-programs.fzf.fuzzyCompletion).
 
 ## Backward Incompatibilities {#sec-release-23.05-incompatibilities}
 

nixos/modules/module-list.nix

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   ./programs/flexoptix-app.nix
   ./programs/freetds.nix
   ./programs/fuse.nix
+  ./programs/fzf.nix
   ./programs/gamemode.nix
   ./programs/geary.nix
   ./programs/git.nix

nixos/modules/programs/fzf.nix

···
+{pkgs, config, lib, ...}:
+with lib;
+let
+  cfg = config.programs.fzf;
+in {
+  options = {
+    programs.fzf = {
+      fuzzyCompletion = mkOption {
+        type = types.bool;
+        description = lib.mdDoc "Whether to use fzf for fuzzy completion";
+        default = false;
+        example = true;
+      };
+      keybindings = mkOption {
+        type = types.bool;
+        description = lib.mdDoc "Whether to set up fzf keybindings";
+        default = false;
+        example = true;
+      };
+    };
+  };
+  config = {
+    environment.systemPackages = optional (cfg.keybindings || cfg.fuzzyCompletion) pkgs.fzf;
+    programs.bash.interactiveShellInit = optionalString cfg.fuzzyCompletion ''
+      source ${pkgs.fzf}/share/fzf/completion.bash
+    '' + optionalString cfg.keybindings ''
+      source ${pkgs.fzf}/share/fzf/key-bindings.bash
+    '';
+
+    programs.zsh.interactiveShellInit = optionalString cfg.fuzzyCompletion ''
+      source ${pkgs.fzf}/share/fzf/completion.zsh
+    '' + optionalString cfg.keybindings ''
+      source ${pkgs.fzf}/share/fzf/key-bindings.zsh
+    '';
+  };
+  meta.maintainers = with maintainers; [ laalsaas ];
+}

pkgs/tools/misc/fzf/default.nix

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-{ lib, buildGoModule, fetchFromGitHub, writeText, runtimeShell, ncurses, perl }:
-
+{ lib
+, buildGoModule
+, fetchFromGitHub
+, writeText
+, runtimeShell
+, installShellFiles
+, ncurses
+, perl
+}:
 buildGoModule rec {
   pname = "fzf";
   version = "0.35.1";
···
 
   outputs = [ "out" "man" ];
 
-  fishHook = writeText "load-fzf-keybindings.fish" "fzf_key_bindings";
+  nativeBuildInputs = [ installShellFiles ];
 
   buildInputs = [ ncurses ];
 
···
       --replace " perl -n " " ${perl}/bin/perl -n "
   '';
 
-  preInstall = ''
-    mkdir -p $out/share/fish/{vendor_functions.d,vendor_conf.d}
-    cp shell/key-bindings.fish $out/share/fish/vendor_functions.d/fzf_key_bindings.fish
-    cp ${fishHook} $out/share/fish/vendor_conf.d/load-fzf-key-bindings.fish
-  '';
+  postInstall = ''
+    install bin/fzf-tmux $out/bin
 
-  postInstall = ''
-    cp bin/fzf-tmux $out/bin
+    installManPage man/man1/fzf.1 man/man1/fzf-tmux.1
 
-    mkdir -p $man/share/man
-    cp -r man/man1 $man/share/man
+    install -D plugin/* -t $out/share/vim-plugins/${pname}/plugin
 
-    mkdir -p $out/share/vim-plugins/${pname}
-    cp -r plugin $out/share/vim-plugins/${pname}
+    # Install shell integrations
+    install -D shell/* -t $out/share/fzf/
+    install -D shell/key-bindings.fish $out/share/fish/vendor_functions.d/fzf_key_bindings.fish
+    mkdir -p $out/share/fish/vendor_conf.d
+    echo fzf_key_bindings > $out/share/fish/vendor_conf.d/load-fzf-key-bindings.fish
 
-    cp -R shell $out/share/fzf
     cat <<SCRIPT > $out/bin/fzf-share
     #!${runtimeShell}
     # Run this script to find the fzf shared folder where all the shell