swiftformat: Leverage Swift stdenv

Previously, a generic clang stdenv was required. We erroneously continued to use such instead of switching to the new Swift-specific one.

flake.lock

@@ -92,11 +92,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1737480538,
-        "narHash": "sha256-rk/cmrvq3In0TegW9qaAxw+5YpJhRWt2p74/6JStrw0=",
+        "lastModified": 1737575492,
+        "narHash": "sha256-qa/D3NC1JoApnUuLrq1gseBmIxeg6icm/ojPgggMDVQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "4481a16d1ac5bff4a77c608cefe08c9b9efe840d",
+        "rev": "cefb1889b96ddd1dac3dd4734e894f4cadab7802",
         "type": "github"
       },
       "original": {
@@ -127,11 +127,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1737423230,
-        "narHash": "sha256-WEOiNmkcmlaeXy2HGW1PYxYmCPiHdsI7a7SpjhBYxRg=",
+        "lastModified": 1737504076,
+        "narHash": "sha256-/B4XJnzYU/6K1ZZOBIgsa3K4pqDJrnC2579c44c+4rI=",
         "owner": "LnL7",
         "repo": "nix-darwin",
-        "rev": "46d0fa4ded0a7532f19870f9bbedaf62269fe3f7",
+        "rev": "65cc1fa8e36ceff067daf6cfb142331f02f524d3",
         "type": "github"
       },
       "original": {
@@ -142,11 +142,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1737062831,
-        "narHash": "sha256-Tbk1MZbtV2s5aG+iM99U8FqwxU/YNArMcWAv6clcsBc=",
+        "lastModified": 1737469691,
+        "narHash": "sha256-nmKOgAU48S41dTPIXAq0AHZSehWUn6ZPrUKijHAMmIk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "5df43628fdf08d642be8ba5b3625a6c70731c19c",
+        "rev": "9e4d5190a9482a1fb9d18adf0bdb83c6e506eaab",
         "type": "github"
       },
       "original": {

pkgs/swiftformat.nix

@@ -1,6 +1,6 @@
 { clangStdenv, lib, fetchFromGitHub, swift, swiftpm, swiftPackages }:
 
-clangStdenv.mkDerivation rec {
+swiftPackages.stdenv.mkDerivation rec {
   pname = "swiftformat";
   version = "0.55.5";