diff --git a/pkgs/development/libraries/libpulsar/default.nix b/pkgs/by-name/li/libpulsar/package.nix
similarity index 78%
rename from pkgs/development/libraries/libpulsar/default.nix
rename to pkgs/by-name/li/libpulsar/package.nix
index 93880415725f..40426343b9aa 100644
--- a/pkgs/development/libraries/libpulsar/default.nix
+++ b/pkgs/by-name/li/libpulsar/package.nix
@@ -1,38 +1,43 @@
 {
   lib,
-  asioSupport ? true,
+  stdenv,
+  fetchFromGitHub,
+
   asio_1_32_0,
   boost,
   boost186,
-  log4cxxSupport ? false,
   log4cxx,
-  snappySupport ? false,
   snappy,
-  zlibSupport ? true,
   zlib,
-  zstdSupport ? true,
   zstd,
   gtest,
-  gtestSupport ? false,
   cmake,
   curl,
-  fetchFromGitHub,
-  protobuf,
+  protobuf_21,
   jsoncpp,
   openssl,
   pkg-config,
-  stdenv,
+
+  asioSupport ? true,
+  log4cxxSupport ? false,
+  snappySupport ? false,
+  zlibSupport ? true,
+  zstdSupport ? true,
+  gtestSupport ? false,
 }:
 
+let
+  protobuf = protobuf_21;
+in
 stdenv.mkDerivation (finalAttrs: {
   pname = "libpulsar";
-  version = "3.7.2";
+  version = "4.1.0";
 
   src = fetchFromGitHub {
     owner = "apache";
     repo = "pulsar-client-cpp";
-    rev = "v${finalAttrs.version}";
-    hash = "sha256-3kUyimyv0Si3zUFaIsIVdulzH8l2fxe6BO9a5L6n8I8=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-+gGddndiRot2kW7KGuKfWA85mh8e+9PetnEBQvfZB1I=";
   };
 
   nativeBuildInputs = [
@@ -40,18 +45,28 @@ stdenv.mkDerivation (finalAttrs: {
     pkg-config
     protobuf # protoc
   ]
-  ++ lib.optional gtestSupport gtest.dev;
+  ++ lib.optionals gtestSupport [
+    (lib.getDev gtest)
+  ];
 
   buildInputs = [
+    curl
     jsoncpp
     openssl
-    curl
     protobuf
   ]
-  ++ lib.optional snappySupport snappy.dev
-  ++ lib.optional zlibSupport zlib
-  ++ lib.optional zstdSupport zstd
-  ++ lib.optional log4cxxSupport log4cxx
+  ++ lib.optionals snappySupport [
+    (lib.getDev snappy)
+  ]
+  ++ lib.optionals zlibSupport [
+    zlib
+  ]
+  ++ lib.optionals zstdSupport [
+    zstd
+  ]
+  ++ lib.optionals log4cxxSupport [
+    log4cxx
+  ]
   ++ lib.optionals asioSupport [
     # io_service was removed in 1.33.0
     asio_1_32_0
@@ -85,9 +100,9 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   meta = {
-    homepage = "https://pulsar.apache.org/docs/next/client-libraries-cpp/";
     description = "Apache Pulsar C++ library";
-    changelog = "https://github.com/apache/pulsar-client-cpp/releases/tag/v${finalAttrs.version}";
+    homepage = "https://pulsar.apache.org/docs/next/client-libraries-cpp/";
+    changelog = "https://github.com/apache/pulsar-client-cpp/releases/tag/${finalAttrs.src.tag}";
     platforms = lib.platforms.all;
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ corbanr ];
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8ff417d307aa..41c691b58039 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6761,10 +6761,6 @@ with pkgs;
     libprom
     ;
 
-  libpulsar = callPackage ../development/libraries/libpulsar {
-    protobuf = protobuf_21;
-  };
-
   libsigcxx = callPackage ../development/libraries/libsigcxx { };
 
   libsigcxx30 = callPackage ../development/libraries/libsigcxx/3.0.nix { };