From 6d1f12b22de7eb8d7af7a642cdf23a14c13d51d2 Mon Sep 17 00:00:00 2001
From: aviac <aviac@mailbox.org>
Date: Thu, 21 Aug 2025 17:41:14 +0200
Subject: [PATCH] chore(nix): make rustfmt-nightly available to default dev
 shell

I verified this by running `rustfmt --version` on my system. Note that I
don't have a system-wide install of rust and only rely on dev shells, so
this can't possibly come from somewhere else.

```
$ rustfmt --version
rustfmt 1.8.0-nightly (6677875279 2025-07-02)
```
---
 flake.nix | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/flake.nix b/flake.nix
index 25629621..d6beb84e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,13 +31,17 @@
           inherit system;
         };
 
+        fnx = inputs.fenix.packages.${system};
         # The Rust toolchain to use
-        toolchain = inputs.fenix.packages.${system}.fromToolchainFile {
-          file = ./rust-toolchain.toml;
+        toolchain = fnx.combine [
+          (fnx.fromToolchainFile {
+            file = ./rust-toolchain.toml;
 
-          # See also `rust-toolchain.toml`
-          sha256 = "sha256-+9FmLhAOezBZCOziO0Qct1NOrfpjNsXxc/8I0c7BdKE=";
-        };
+            # See also `rust-toolchain.toml`
+            sha256 = "sha256-+9FmLhAOezBZCOziO0Qct1NOrfpjNsXxc/8I0c7BdKE=";
+          })
+          fnx.complete.rustfmt
+        ];
 
         mkScope =
           pkgs: