Use uni instead of custom emoji generation using gemoji

flake.nix

@@ -70,6 +70,7 @@
       customPackages = callPackage: {
         jdtls = callPackage ./packages/jdtls { };
         kotlin-language-server = callPackage ./packages/kotlin-language-server { };
+        uni = callPackage ./packages/uni { };
       }; in
     utils.lib.mkFlake {
       inherit self inputs;

modules/graphical/sway/launcher.nix

@@ -1,31 +1,5 @@
 { pkgs, stdenv }:
 let
-  gemoji = pkgs.buildRubyGem {
-    pname = "gemoji";
-    gemName = "gemoji";
-    source.sha256 = "1xv38sxql1fmaxi5lzj6v98l2aqhi6bqkhi6kqd0k38vw40l3yqc";
-    type = "gem";
-    version = "4.0.0.rc2";
-  };
-  emojiList = stdenv.mkDerivation {
-    name = "emoji_list";
-    buildInputs = [ pkgs.ruby gemoji ];
-    unpackPhase = "true";
-    buildPhase = ''
-      cat > extract_emoji.rb <<HERE
-      require 'emoji'
-      File.open('emoji_list.txt', 'w') do |f|
-        Emoji.all.each do |e|
-          f.puts("#{e.raw} #{e.description} #{e.name}#{(" " + e.tags.join(" ")) if e.tags.any?} (#{e.category})")
-        end
-      end
-      HERE
-      ruby extract_emoji.rb
-    '';
-    installPhase = ''
-      cp emoji_list.txt $out
-    '';
-  };
   script = pkgs.substituteAll {
     src = ./launcher.zsh;
     inherit (pkgs)
@@ -37,9 +11,9 @@ let
       pass
       slurp
       sway
+      uni
       zsh
       ;
-    inherit emojiList;
     wfRecorder = pkgs.wf-recorder;
     wlClipboard = pkgs.wl-clipboard;
     xdgUserDirs = pkgs.xdg-user-dirs;

modules/graphical/sway/launcher.zsh

@@ -19,7 +19,7 @@ calc() {
 }
 
 emoji_options() {
-  cat @emojiList@ | sed "s/^/emoji /"
+  @uni@/bin/uni emoji all | sed "s/^/emoji /"
 }
 
 emoji() {

packages/uni/default.nix

@@ -0,0 +1,24 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "uni";
+  version = "2.4.0";
+
+  src = fetchFromGitHub {
+    owner = "arp242";
+    repo = "uni";
+    rev = "v${version}";
+    sha256 = "ZBVUrS1/jUO0iLbK6P5ACw1vS5QPbSMkG9ZTdKrb8eo=";
+  };
+
+  vendorSha256 = "+gRESx8KCwfxCztY/68UO8KV+bJmjq3gbsrCFHBZyEI=";
+
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://github.com/arp242/uni";
+    description = "Query the Unicode database from the commandline, with good support for emojis";
+    license = licenses.mit;
+    maintainers = with maintainers; [ chvp ];
+  };
+}