nixos/fzf: bring back keybindings and completion option removed in #298692

Also drop with lib

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

···
 
 - [frigate](https://frigate.video), an open source NVR built around real-time AI object detection. Available as [services.frigate](#opt-services.frigate.enable).
 
-- [fzf](https://github.com/junegunn/fzf), a command line fuzzyfinder. Available as [programs.fzf](#opt-programs.fzf.enable).
+- [fzf](https://github.com/junegunn/fzf), a command line fuzzyfinder. Available as [programs.fzf](#opt-programs.fzf.fuzzyCompletion).
 
 - [gemstash](https://github.com/rubygems/gemstash), a RubyGems.org cache and private gem server. Available as [services.gemstash](#opt-services.gemstash.enable).
 

nixos/doc/manual/release-notes/rl-2405.section.md

···
 
 - `xxd` has been moved from `vim` default output to its own output to reduce closure size. The canonical way to reference it across all platforms is `unixtools.xxd`.
 
-- `programs.fzf.keybindings` and `programs.fzf.fuzzyCompletion` got replaced by `programs.fzf.enable` as shell-completion is included in the fzf-binary now there is no easy option to load completion and keybindings separately. Please consult fzf-documentation on how to configure/disable certain keybindings.
-
 - The `stalwart-mail` package has been updated to v0.5.3, which includes [breaking changes](https://github.com/stalwartlabs/mail-server/blob/v0.5.3/UPGRADING.md).
 
 - `services.zope2` has been removed as `zope2` is unmaintained and was relying on Python2.

nixos/modules/programs/fzf.nix

···
 { pkgs, config, lib, ... }:
 
-with lib;
-
 let
   cfg = config.programs.fzf;
-
 in
 {
-  imports = [
-    (lib.mkRemovedOptionModule [ "programs" "fzf" "keybindings" ] ''
-      Use "programs.fzf.enable" instead, due to fzf upstream-change it's not possible to load shell-completion and keybindings separately.
-      If you want to change/disable certain keybindings please check the fzf-documentation.
-    '')
-    (lib.mkRemovedOptionModule [ "programs" "fzf" "fuzzyCompletion" ] ''
-      Use "programs.fzf.enable" instead, due to fzf upstream-change it's not possible to load shell-completion and keybindings separately.
-      If you want to change/disable certain keybindings please check the fzf-documentation.
-    '')
-  ];
-
   options = {
-    programs.fzf.enable = mkEnableOption (mdDoc "fuzzy completion with fzf and keybindings");
+    programs.fzf = {
+      fuzzyCompletion = lib.mkEnableOption (lib.mdDoc "fuzzy completion with fzf");
+      keybindings = lib.mkEnableOption (lib.mdDoc "fzf keybindings");
+    };
   };
 
-  config = mkIf cfg.enable {
-    environment.systemPackages = [ pkgs.fzf ];
-
-    programs.bash.interactiveShellInit = ''
-      eval "$(${getExe pkgs.fzf} --bash)"
-    '';
-
-    programs.fish.interactiveShellInit = ''
-      ${getExe pkgs.fzf} --fish | source
-    '';
+  config = lib.mkIf (cfg.keybindings || cfg.fuzzyCompletion) {
+    environment.systemPackages = lib.mkIf (cfg.keybindings || cfg.fuzzyCompletion) [ pkgs.fzf ];
 
-    programs.zsh = {
-      interactiveShellInit = optionalString (!config.programs.zsh.ohMyZsh.enable) ''
-        eval "$(${getExe pkgs.fzf} --zsh)"
+    programs = {
+      bash.interactiveShellInit = lib.optionalString cfg.fuzzyCompletion ''
+        source ${pkgs.fzf}/share/fzf/completion.bash
+      '' + lib.optionalString cfg.keybindings ''
+        source ${pkgs.fzf}/share/fzf/key-bindings.bash
       '';
 
-      ohMyZsh.plugins = mkIf (config.programs.zsh.ohMyZsh.enable) [ "fzf" ];
+      zsh = {
+        interactiveShellInit = lib.optionalString (!config.programs.zsh.ohMyZsh.enable)
+        (lib.optionalString cfg.fuzzyCompletion ''
+          source ${pkgs.fzf}/share/fzf/completion.zsh
+        '' + lib.optionalString cfg.keybindings ''
+          source ${pkgs.fzf}/share/fzf/key-bindings.zsh
+        '');
+
+        ohMyZsh.plugins = lib.mkIf config.programs.zsh.ohMyZsh.enable [ "fzf" ];
+      };
     };
   };
 
-  meta.maintainers = with maintainers; [ laalsaas ];
+  meta.maintainers = with lib.maintainers; [ laalsaas ];
 }

pkgs/tools/misc/fzf/default.nix

···
     install -D plugin/* -t $out/share/vim-plugins/${pname}/plugin
     mkdir -p $out/share/nvim
     ln -s $out/share/vim-plugins/${pname} $out/share/nvim/site
+
+    # 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
+    cat << EOF > $out/share/fish/vendor_conf.d/load-fzf-key-bindings.fish
+      status is-interactive; or exit 0
+      fzf_key_bindings
+    EOF
   '';
 
   passthru.tests.version = testers.testVersion {