diff --git a/flake.nix b/flake.nix
index d2e93e8..4c9828c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,64 +10,69 @@
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, rust-overlay, flake-utils }:
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        overlays = [ (import rust-overlay) ];
-        pkgs = import nixpkgs { inherit system overlays; };
-        isLinux = pkgs.lib.hasInfix "linux" system;
+  outputs = {
+    self,
+    nixpkgs,
+    rust-overlay,
+    flake-utils,
+  }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      overlays = [(import rust-overlay)];
+      pkgs = import nixpkgs {inherit system overlays;};
+      isLinux = pkgs.lib.hasInfix "linux" system;
 
-        rustToolchain = pkgs.rust-bin.stable.latest.default.override {
-          extensions = [ "rust-src" "clippy" "rustfmt" ];
-          targets = pkgs.lib.optionals isLinux [ "x86_64-unknown-linux-musl" ];
-        };
-      in
-      {
-        devShells.default = pkgs.mkShell ({
-          nativeBuildInputs = [
-            rustToolchain
-            pkgs.pkg-config
-          ] ++ pkgs.lib.optionals isLinux [
-            # Provide cc (gcc) for building proc-macro / build-script crates
-            # that target the host (x86_64-unknown-linux-gnu).
-            pkgs.gcc
-            # musl-gcc wrapper for the static musl target.
-            pkgs.pkgsMusl.stdenv.cc
-          ];
+      rustToolchain = pkgs.rust-bin.stable.latest.default.override {
+        extensions = ["rust-src" "clippy" "rustfmt"];
+        targets = pkgs.lib.optionals isLinux ["x86_64-unknown-linux-musl"];
+      };
+    in {
+      devShells.default = pkgs.mkShell ({
+          nativeBuildInputs =
+            [
+              rustToolchain
+              pkgs.pkg-config
+            ]
+            ++ pkgs.lib.optionals isLinux [
+              # Provide cc (gcc) for building proc-macro / build-script crates
+              # that target the host (x86_64-unknown-linux-gnu).
+              pkgs.gcc
+              # musl-gcc wrapper for the static musl target.
+              pkgs.pkgsMusl.stdenv.cc
+            ];
 
           RUST_BACKTRACE = "1";
-        } // pkgs.lib.optionalAttrs isLinux {
+        }
+        // pkgs.lib.optionalAttrs isLinux {
           # Tell Cargo which linker to use for each target so it never
           # falls back to rust-lld (which can't find glibc on NixOS).
-          CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER =
-            "${pkgs.gcc}/bin/gcc";
-          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER =
-            "${pkgs.pkgsMusl.stdenv.cc}/bin/cc";
+          CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER = "${pkgs.gcc}/bin/gcc";
+          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER = "${pkgs.pkgsMusl.stdenv.cc}/bin/cc";
 
           # Default build target: static musl binary.
           CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";
         });
 
-        packages.default =
-          if isLinux then
-            (pkgs.pkgsMusl.makeRustPlatform {
-              cargo = rustToolchain;
-              rustc = rustToolchain;
-            }).buildRustPackage {
-              pname = "improvise";
-              version = "0.1.0";
-              src = ./.;
-              cargoLock.lockFile = ./Cargo.lock;
-            }
-          else
-            (pkgs.makeRustPlatform {
-              cargo = rustToolchain;
-              rustc = rustToolchain;
-            }).buildRustPackage {
-              pname = "improvise";
-              version = "0.1.0";
-              src = ./.;
-              cargoLock.lockFile = ./Cargo.lock;
-            };
-      });
+      packages.default =
+        if isLinux
+        then
+          (pkgs.pkgsMusl.makeRustPlatform {
+            cargo = rustToolchain;
+            rustc = rustToolchain;
+          }).buildRustPackage {
+            pname = "improvise";
+            version = "0.1.0";
+            src = ./.;
+            cargoLock.lockFile = ./Cargo.lock;
+          }
+        else
+          (pkgs.makeRustPlatform {
+            cargo = rustToolchain;
+            rustc = rustToolchain;
+          }).buildRustPackage {
+            pname = "improvise";
+            version = "0.1.0";
+            src = ./.;
+            cargoLock.lockFile = ./Cargo.lock;
+          };
+    });
 }