dump_syms: refactor

this shouldn't create any rebuilds

pkgs/by-name/du/dump_syms/package.nix

@@ -12,17 +12,14 @@
   thunderbird-unwrapped,
 }:
 
-let
+rustPlatform.buildRustPackage (finalAttrs: {
   pname = "dump_syms";
   version = "2.3.6";
-in
-rustPlatform.buildRustPackage {
-  inherit pname version;
 
   src = fetchFromGitHub {
     owner = "mozilla";
     repo = "dump_syms";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     hash = "sha256-ABfjLV6WMIiaSiyfR/uxL6+VyO/pO6oZjbJSAxRGXuE=";
   };
 
@@ -50,11 +47,11 @@ rustPlatform.buildRustPackage {
   __structuredAttrs = true;
 
   meta = {
-    changelog = "https://github.com/mozilla/dump_syms/blob/v${version}/CHANGELOG.md";
+    changelog = "https://github.com/mozilla/dump_syms/blob/v${finalAttrs.version}/CHANGELOG.md";
     description = "Command-line utility for parsing the debugging information the compiler provides in ELF or stand-alone PDB files";
     mainProgram = "dump_syms";
     license = lib.licenses.asl20;
     homepage = "https://github.com/mozilla/dump_syms/";
     maintainers = with lib.maintainers; [ hexa ];
   };
-}
+})