ftxui: modernize

Signed-off-by: phanirithvij <phanirithvij2000@gmail.com>

pkgs/by-name/ft/ftxui/package.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+
   cmake,
   doxygen,
   gbenchmark,
@@ -9,14 +10,14 @@
   gtest,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "ftxui";
   version = "6.1.9";
 
   src = fetchFromGitHub {
     owner = "ArthurSonzogni";
     repo = "ftxui";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-plJxTLhOhUyuay5uYv4KLK9UTmM2vsoda+iDXVa4b+k=";
   };
 
@@ -33,20 +34,20 @@ stdenv.mkDerivation rec {
     gbenchmark
   ];
 
+  doCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
+
   cmakeFlags = [
     (lib.cmakeBool "FTXUI_BUILD_EXAMPLES" false)
     (lib.cmakeBool "FTXUI_BUILD_DOCS" true)
-    (lib.cmakeBool "FTXUI_BUILD_TESTS" doCheck)
+    (lib.cmakeBool "FTXUI_BUILD_TESTS" finalAttrs.doCheck)
   ];
 
-  doCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
-
   meta = {
     homepage = "https://github.com/ArthurSonzogni/FTXUI";
-    changelog = "https://github.com/ArthurSonzogni/FTXUI/blob/v${version}/CHANGELOG.md";
+    changelog = "https://github.com/ArthurSonzogni/FTXUI/blob/v${finalAttrs.version}/CHANGELOG.md";
     description = "Functional Terminal User Interface library for C++";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ phanirithvij ];
     platforms = lib.platforms.all;
   };
-}
+})