From 95c9a3f1928c4ce714780072c9cd7d9b865d2097 Mon Sep 17 00:00:00 2001
From: Reed Krantz <programming@krantz.one>
Date: Sat, 21 Feb 2026 15:45:21 -0600
Subject: [PATCH] feat(rust): add a manifest variable that contains the
 Cargo.toml values

---
 rust/flake.nix | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/rust/flake.nix b/rust/flake.nix
index 8159481..1274973 100644
--- a/rust/flake.nix
+++ b/rust/flake.nix
@@ -27,9 +27,14 @@
 
       systems = ["aarch64-linux" "x86_64-linux" "aarch64-darwin" "x86_64-darwin"];
 
-      perSystem = {pkgs, ...}: let
+      perSystem = {
+        pkgs,
+        lib,
+        ...
+      }: let
         craneLib = crane.mkLib pkgs;
         src = craneLib.cleanCargoSource ./.;
+        manifest = (lib.importTOML "${src}/Cargo.toml").package;
 
         # runtime dependencies
         buildInputs = with pkgs; [
@@ -66,7 +71,7 @@
           programs.alejandra.enable = true;
           programs.rustfmt = {
             enable = true;
-            edition = (builtins.fromTOML (builtins.readFile "${src}/Cargo.toml")).package.edition;
+            edition = manifest.edition;
           };
         };