replace nixpkgs-fmt with nixfmt-rfc-style

default.nix

@@ -1,4 +1,10 @@
-{ resholve, lib, coreutils, direnv, nix }:
+{
+  resholve,
+  lib,
+  coreutils,
+  direnv,
+  nix,
+}:
 
 # resholve does not yet support `finalAttrs` call pattern hence `rec`
 # https://github.com/abathur/resholve/issues/107
@@ -24,7 +30,10 @@ resholve.mkDerivation rec {
     default = {
       scripts = [ "share/${pname}/direnvrc" ];
       interpreter = "none";
-      inputs = [ coreutils nix ];
+      inputs = [
+        coreutils
+        nix
+      ];
       fake = {
         builtin = [
           "PATH_add"

flake.nix

@@ -2,7 +2,9 @@
   description = "A faster, persistent implementation of `direnv`'s `use_nix`, to replace the built-in one.";
 
   nixConfig.extra-substituters = [ "https://cache.thalheim.io" ];
-  nixConfig.extra-trusted-public-keys = [ "cache.thalheim.io-1:R7msbosLEZKrxk/lKxf9BTjOOH7Ax3H0Qj0/6wiHOgc=" ];
+  nixConfig.extra-trusted-public-keys = [
+    "cache.thalheim.io-1:R7msbosLEZKrxk/lKxf9BTjOOH7Ax3H0Qj0/6wiHOgc="
+  ];
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
@@ -16,9 +18,11 @@
     };
   };
 
-  outputs = inputs @ { flake-parts, ... }:
-    flake-parts.lib.mkFlake { inherit inputs; }
-      ({ lib, ... }: {
+  outputs =
+    inputs@{ flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } (
+      { lib, ... }:
+      {
         imports = [
           ./treefmt.nix
           ./pkgs/bash4/flake-module.nix
@@ -30,20 +34,26 @@
           "x86_64-darwin"
           "aarch64-darwin"
         ];
-        perSystem = { config, pkgs, self', ... }: {
+        perSystem =
+          {
+            config,
+            pkgs,
+            self',
+            ...
+          }:
+          {
             packages = {
               nix-direnv = pkgs.callPackage ./default.nix { };
               default = config.packages.nix-direnv;
-            test-runner-stable = pkgs.callPackage ./test-runner.nix {
-              nixVersion = "stable";
-            };
-            test-runner-latest = pkgs.callPackage ./test-runner.nix {
-              nixVersion = "latest";
-            };
+              test-runner-stable = pkgs.callPackage ./test-runner.nix { nixVersion = "stable"; };
+              test-runner-latest = pkgs.callPackage ./test-runner.nix { nixVersion = "latest"; };
             };
 
             devShells.default = pkgs.callPackage ./shell.nix {
-            packages = [ config.treefmt.build.wrapper pkgs.shellcheck ];
+              packages = [
+                config.treefmt.build.wrapper
+                pkgs.shellcheck
+              ];
             };
 
             checks =
@@ -54,13 +64,12 @@
               packages // devShells;
           };
         flake = {
-          overlays.default = final: _prev: {
-            nix-direnv = final.callPackage ./default.nix { };
-          };
+          overlays.default = final: _prev: { nix-direnv = final.callPackage ./default.nix { }; };
           templates.default = {
             path = ./templates/flake;
             description = "nix flake new -t github:Mic92/nix-direnv .";
           };
         };
-      });
+      }
+    );
 }

pkgs/bash4/default.nix

@@ -8,8 +8,11 @@ bash.overrideAttrs (_old: {
   };
 
   # generated with update-patch-set.sh from nixpkgs/pkgs/shells/bash
-  patches = import ./bash-4.4-patches.nix (nr: sha256: fetchurl {
+  patches = import ./bash-4.4-patches.nix (
+    nr: sha256:
+    fetchurl {
       url = "mirror://gnu/bash/bash-4.4-patches/bash44-${nr}";
       inherit sha256;
-  });
+    }
+  );
 })

pkgs/bash4/flake-module.nix

@@ -1,13 +1,14 @@
-{ self, withSystem, ... }: {
-  flake.packages.x86_64-linux = withSystem "x86_64-linux"
-    ({ pkgs, ... }: {
+{ self, withSystem, ... }:
+{
+  flake.packages.x86_64-linux = withSystem "x86_64-linux" (
+    { pkgs, ... }:
+    {
       bash4 = pkgs.callPackage ./. { };
-      direnv-bash4 = pkgs.direnv.override {
-        bash = self.packages.x86_64-linux.bash4;
-      };
+      direnv-bash4 = pkgs.direnv.override { bash = self.packages.x86_64-linux.bash4; };
       test-runner-bash4 = pkgs.callPackage ../../test-runner.nix {
         nixVersion = "stable";
         direnv = self.packages.x86_64-linux.direnv-bash4;
       };
-    });
+    }
+  );
 }

shell.nix

@@ -1,4 +1,7 @@
-{ pkgs ? import <nixpkgs> { }, packages ? [ ] }:
+{
+  pkgs ? import <nixpkgs> { },
+  packages ? [ ],
+}:
 
 with pkgs;
 mkShell {

templates/flake/flake.nix

@@ -3,14 +3,15 @@
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
-  outputs = { nixpkgs, flake-utils, ... }:
-    flake-utils.lib.eachDefaultSystem (system:
+  outputs =
+    { nixpkgs, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
       in
       {
-        devShells.default = pkgs.mkShell {
-          packages = [ pkgs.bashInteractive ];
-        };
-      });
+        devShells.default = pkgs.mkShell { packages = [ pkgs.bashInteractive ]; };
+      }
+    );
 }

test-runner.nix

@@ -1,15 +1,23 @@
-{ writeShellScriptBin
-, direnv
-, python3
-, lib
-, coreutils
-, gnugrep
-, nixVersions
-, nixVersion
+{
+  writeShellScriptBin,
+  direnv,
+  python3,
+  lib,
+  coreutils,
+  gnugrep,
+  nixVersions,
+  nixVersion,
 }:
 writeShellScriptBin "test-runner-${nixVersion}" ''
   set -e
-  export PATH=${lib.makeBinPath [ direnv nixVersions.${nixVersion} coreutils gnugrep ]}
+  export PATH=${
+    lib.makeBinPath [
+      direnv
+      nixVersions.${nixVersion}
+      coreutils
+      gnugrep
+    ]
+  }
 
   echo run unittest
   ${lib.getExe' python3.pkgs.pytest "pytest"} .

tests/testenv/flake.nix

@@ -4,10 +4,9 @@
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
   # deadnix: skip
-  outputs = { self, nixpkgs, flake-utils }:
+  outputs =
+    { nixpkgs, flake-utils, ... }:
     flake-utils.lib.eachDefaultSystem (system: {
-      devShell = import ./shell.nix {
-        pkgs = nixpkgs.legacyPackages.${system};
-      };
+      devShell = import ./shell.nix { pkgs = nixpkgs.legacyPackages.${system}; };
     });
 }

tests/testenv/shell.nix

@@ -1,8 +1,9 @@
-{ pkgs ? import (builtins.getFlake (toString ./.)).inputs.nixpkgs { }
-, someArg ? null
-, shellHook ? ''
+{
+  pkgs ? import (builtins.getFlake (toString ./.)).inputs.nixpkgs { },
+  someArg ? null,
+  shellHook ? ''
     echo "Executing shellHook."
-  ''
+  '',
 }:
 pkgs.mkShellNoCC {
   inherit shellHook;
@@ -10,5 +11,7 @@ pkgs.mkShellNoCC {
   nativeBuildInputs = [ pkgs.hello ];
   SHOULD_BE_SET = someArg;
 
-  passthru = { subshell = pkgs.mkShellNoCC { THIS_IS_A_SUBSHELL = "OK"; }; };
+  passthru = {
+    subshell = pkgs.mkShellNoCC { THIS_IS_A_SUBSHELL = "OK"; };
+  };
 }

treefmt.nix

@@ -1,9 +1,10 @@
-{ inputs, ... }: {
-  imports = [
-    inputs.treefmt-nix.flakeModule
-  ];
+{ inputs, ... }:
+{
+  imports = [ inputs.treefmt-nix.flakeModule ];
 
-  perSystem = {
+  perSystem =
+    { pkgs, ... }:
+    {
       treefmt = {
         # Used to find the project root
         projectRootFile = ".git/config";
@@ -14,7 +15,8 @@
           mypy.enable = true;
           ruff.check = true;
           ruff.format = true;
-        nixpkgs-fmt.enable = true;
+          nixfmt.enable = true;
+          nixfmt.package = pkgs.nixfmt-rfc-style;
           shellcheck.enable = true;
           shfmt.enable = true;
           statix.enable = true;