age-plugin-se: use `llvmPackages.stdenv`

GCC doesn’t know what an `-fblocks` or `-fmodules` is. Probably
SwiftPM should hard‐code Clang but I’m tired.

Emily a1a2f97a 2153141b

Changed files
+2 -1
pkgs
by-name
ag
age-plugin-se
+2 -1
pkgs/by-name/ag/age-plugin-se/package.nix
···
{
lib,
fetchFromGitHub,
+
llvmPackages,
swiftPackages,
swift,
swiftpm,
nix-update-script,
}:
let
-
inherit (swiftPackages) stdenv;
+
inherit (llvmPackages) stdenv;
in
stdenv.mkDerivation (finalAttrs: {
pname = "age-plugin-se";