diff --git a/pkgs/development/tools/language-servers/pylyzer/default.nix b/pkgs/development/tools/language-servers/pylyzer/default.nix
new file mode 100644
index 000000000000..3e5dabbf9bff
--- /dev/null
+++ b/pkgs/development/tools/language-servers/pylyzer/default.nix
@@ -0,0 +1,62 @@
+{ lib
+, stdenv
+, rustPlatform
+, fetchFromGitHub
+, git
+, python3
+, makeWrapper
+, darwin
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "pylyzer";
+  version = "0.0.26";
+
+  src = fetchFromGitHub {
+    owner = "mtshiba";
+    repo = "pylyzer";
+    rev = "v${version}";
+    hash = "sha256-ZEmTSSYHQWk0IVJXlrtGb+j2hbb9ZtDLCtajOR7BMoU=";
+  };
+
+  cargoHash = "sha256-/QMzPvLcAjpai2YX58+YM/+KhYZRuK59hPYAEHeTTa4=";
+
+  nativeBuildInputs = [
+    git
+    python3
+    makeWrapper
+  ];
+
+  buildInputs = [
+    python3
+  ] ++ lib.optionals stdenv.isDarwin [
+    darwin.apple_sdk.frameworks.Security
+  ];
+
+  preBuild = ''
+    export HOME=$TMPDIR
+  '';
+
+  postInstall = ''
+    mkdir -p $out/lib
+    cp -r $HOME/.erg/ $out/lib/erg
+  '';
+
+  checkFlags = [
+    # this test causes stack overflow
+    # > thread 'exec_import' has overflowed its stack
+    "--skip=exec_import"
+  ];
+
+  postFixup = ''
+    wrapProgram $out/bin/pylyzer --set ERG_PATH $out/lib/erg
+  '';
+
+  meta = with lib; {
+    description = "A fast static code analyzer & language server for Python";
+    homepage = "https://github.com/mtshiba/pylyzer";
+    changelog = "https://github.com/mtshiba/pylyzer/releases/tag/v${version}";
+    license = licenses.mit;
+    maintainers = with maintainers; [ natsukium ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0bfebbf56bd3..b908cfc67fd2 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17419,6 +17419,8 @@ with pkgs;
 
   nil = callPackage ../development/tools/language-servers/nil { };
 
+  pylyzer = callPackage ../development/tools/language-servers/pylyzer { };
+
   rnix-lsp = callPackage ../development/tools/language-servers/rnix-lsp { };
 
   svls = callPackage ../development/tools/language-servers/svls { };