diff --git a/.envrc b/.envrc
index 4aa9dd8..1bebd0f 100644
--- a/.envrc
+++ b/.envrc
@@ -1,3 +1,4 @@
+# shellcheck shell=bash
 if ! has nix_direnv_version || ! nix_direnv_version 2.2.0; then
   source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.2.0/direnvrc" "sha256-5EwyKnkJNQeXrRkYbwwRBcXbibosCJqyIUuz9Xq+LRc="
 fi
diff --git a/.github/workflows/nix-fmt-checks.yaml b/.github/workflows/nix-fmt-checks.yaml
deleted file mode 100644
index af11b5c..0000000
--- a/.github/workflows/nix-fmt-checks.yaml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: Nix formatter checks
-
-on:
-  pull_request:
-  push:
-    branches:
-      - master
-      - staging # for bors
-      - trying # for bors
-jobs:
-  format-check:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Install Nix
-        uses: cachix/install-nix-action@v29
-
-      - name: Run nix formatter tool
-        run: nix fmt -- --fail-on-change
diff --git a/README.md b/README.md
index c1f8343..6cf61f0 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # nix-update
 
-Nix-update updates versions/source hashes of nix packages. It is
-designed to work with nixpkgs but also other package sets.
+Nix-update updates versions/source hashes of nix packages. It is designed to
+work with nixpkgs but also other package sets.
 
 ## Features
 
@@ -16,7 +16,8 @@ designed to work with nixpkgs but also other package sets.
   - RubyGems.org
   - Sourcehut
   - Savannah
-- update buildRustPackage's cargoHash/cargoSha256/cargoLock and cargoSetupHook's cargoDeps
+- update buildRustPackage's cargoHash/cargoSha256/cargoLock and cargoSetupHook's
+  cargoDeps
 - update buildGoModule's vendorHash/vendorSha256
 - update buildNpmPackage's npmDepsHash and npmConfigHook's npmDeps
 - update buildComposerProject's vendorHash
@@ -24,9 +25,9 @@ designed to work with nixpkgs but also other package sets.
 - update mixRelease's mixFodDeps
 - update fetchYarnDeps offlineCache output hash
 - update flake outputs (see `--flake`)
-- generate the following lockfile, Cargo.lock (see `--generate-lockfile` and `--lockfile-metadata-path`)
-- build and run the resulting package (see `--build`,
-  `--run` or `--shell`
+- generate the following lockfile, Cargo.lock (see `--generate-lockfile` and
+  `--lockfile-metadata-path`)
+- build and run the resulting package (see `--build`, `--run` or `--shell`
 - commit updated files (see `--commit` flag)
 - run update scripts (`passthru.updateScript`, see `--use-update-script` flag)
 - run package tests (see `--test` flag)
@@ -63,8 +64,8 @@ $ nix run github:Mic92/nix-update
 
 ## USAGE
 
-First change to your directory containing the nix expression (Could be a
-nixpkgs or your own repository). Than run `nix-update` as follows
+First change to your directory containing the nix expression (Could be a nixpkgs
+or your own repository). Than run `nix-update` as follows
 
 ```console
 $ nix-update attribute [--version version]
@@ -111,15 +112,16 @@ To only update sources hashes without updating the version:
 $ nix-update --version=skip nixpkgs-review
 ```
 
-To extract version information from versions with prefixes or suffixes,
-a regex can be used
+To extract version information from versions with prefixes or suffixes, a regex
+can be used
 
 ```console
 $ nix-update jq --version-regex 'jq-(.*)'
 ```
 
-By default `nix-update` will locate the file that needs to be patched using the `src` attribute of a derivation.
-In some cases this heurestic is wrong. One can override the behavior like that:
+By default `nix-update` will locate the file that needs to be patched using the
+`src` attribute of a derivation. In some cases this heurestic is wrong. One can
+override the behavior like that:
 
 ```console
 $ nix-update hello --override-filename pkgs/applications/misc/hello/default.nix
@@ -138,11 +140,12 @@ nix-update --url https://github.com/signalapp/Signal-Desktop --override-filename
 ```
 
 With the `--shell`, `--build`, `--test` and `--run` flags the update can be
-tested. Additionally, the `--review` flag can be used to
-initiate a run of [nixpkgs-review](https://github.com/Mic92/nixpkgs-review), which will ensure all
+tested. Additionally, the `--review` flag can be used to initiate a run of
+[nixpkgs-review](https://github.com/Mic92/nixpkgs-review), which will ensure all
 dependent packages can be built.
 
-In order to ensure consistent formatting, the `--format` flag will invoke [nixfmt](https://github.com/NixOS/nixfmt) (`nixfmt-rfc-style` in nixpkgs).
+In order to ensure consistent formatting, the `--format` flag will invoke
+[nixfmt](https://github.com/NixOS/nixfmt) (`nixfmt-rfc-style` in nixpkgs).
 
 ```console
 # Also runs nix-build
@@ -160,8 +163,7 @@ $ nix-update --format nixpkgs-review
 ```
 
 Nix-update also can optionally generate a commit message in the form
-`attribute: old_version -> new_version` with the applied
-version update:
+`attribute: old_version -> new_version` with the applied version update:
 
 ```console
 $ nix-update --commit bitcoin-abc
@@ -170,10 +172,10 @@ $ nix-update --commit bitcoin-abc
 1 file changed, 2 insertions(+), 2 deletions(-)
 ```
 
-By default, nix-update will attempt to update to the next stable version
-of a package. Alphas, betas, release candidates and similar unstable
-releases will be ignored. This can be affected by changing the parameter
-`version` from its default value `stable` to `unstable`.
+By default, nix-update will attempt to update to the next stable version of a
+package. Alphas, betas, release candidates and similar unstable releases will be
+ignored. This can be affected by changing the parameter `version` from its
+default value `stable` to `unstable`.
 
 ```console
 $ nix-update sbt
@@ -197,7 +199,8 @@ $ nix-update sbt --use-update-script --update-script-args "--argstr skip-prompt
 
 ## Development setup
 
-First clone the repo to your preferred location (in the following, we assume `~/` - your home):
+First clone the repo to your preferred location (in the following, we assume
+`~/` - your home):
 
 ```console
 $ git clone https://github.com/Mic92/nix-update/ ~/nix-update
@@ -210,13 +213,15 @@ $ cd ~/nix-update
 $ nix develop
 ```
 
-Change to the repository that contains the nix files you want to update, i.e. nixpkgs:
+Change to the repository that contains the nix files you want to update, i.e.
+nixpkgs:
 
 ```console
 $ cd nixpkgs
 ```
 
-Now you can run `nix-update` just by specifying the full path to its executable wrapper:
+Now you can run `nix-update` just by specifying the full path to its executable
+wrapper:
 
 ```console
 $ ~/git/nix-update/bin/nix-update --commit hello
@@ -228,9 +233,9 @@ $ ~/git/nix-update/bin/nix-update --commit hello
 
 ## Known Bugs
 
-nix-update might not work correctly if a file contain multiple packages
-as it performs naive search and replace to update version numbers. This
-might be a problem if:
+nix-update might not work correctly if a file contain multiple packages as it
+performs naive search and replace to update version numbers. This might be a
+problem if:
 
 - A file contains the same version string for multiple packages.
 - `name` is used instead of `pname` and/or `${version}` is injected into `name`.
@@ -242,8 +247,7 @@ Related discussions:
 
 ## Related projects:
 
-- [nixpkgs-update](https://github.com/ryantm/nixpkgs-update) is
-  optimized for mass-updates in nixpkgs while nix-update is better
-  suited for interactive usage that might require user-intervention
-  i.e. fixing the build and testing the result. nix-update is also not
-  limited to nixpkgs.
+- [nixpkgs-update](https://github.com/ryantm/nixpkgs-update) is optimized for
+  mass-updates in nixpkgs while nix-update is better suited for interactive
+  usage that might require user-intervention i.e. fixing the build and testing
+  the result. nix-update is also not limited to nixpkgs.
diff --git a/bin/create-release.sh b/bin/create-release.sh
index cc2efce..7d5536f 100755
--- a/bin/create-release.sh
+++ b/bin/create-release.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
 cd "$SCRIPT_DIR/.."
 
 version=${1:-}
-if [[ -z "$version" ]]; then
+if [[ -z $version ]]; then
   echo "USAGE: $0 version" >&2
   exit 1
 fi
@@ -18,13 +18,13 @@ fi
 
 # ensure we are up-to-date
 uncommitted_changes=$(git diff --compact-summary)
-if [[ -n "$uncommitted_changes" ]]; then
+if [[ -n $uncommitted_changes ]]; then
   echo -e "There are uncommitted changes, exiting:\n${uncommitted_changes}" >&2
   exit 1
 fi
 git pull git@github.com:Mic92/nix-update master
 unpushed_commits=$(git log --format=oneline origin/master..master)
-if [[ "$unpushed_commits" != "" ]]; then
+if [[ $unpushed_commits != "" ]]; then
   echo -e "\nThere are unpushed changes, exiting:\n$unpushed_commits" >&2
   exit 1
 fi
diff --git a/default.nix b/default.nix
index ea3f7d7..9ffc0c3 100644
--- a/default.nix
+++ b/default.nix
@@ -1,7 +1,7 @@
-{ pkgs ? import <nixpkgs> { }
+{
+  pkgs ? import <nixpkgs> { },
 }:
 
-
 pkgs.python311.pkgs.buildPythonApplication {
   pname = "nix-update";
   version = "1.0.0";
@@ -21,7 +21,11 @@ pkgs.python311.pkgs.buildPythonApplication {
   makeWrapperArgs = [
     "--prefix PATH"
     ":"
-    (pkgs.lib.makeBinPath [ pkgs.nixVersions.stable or pkgs.nix_2_4 pkgs.nixpkgs-review pkgs.nix-prefetch-git ])
+    (pkgs.lib.makeBinPath [
+      pkgs.nixVersions.stable or pkgs.nix_2_4
+      pkgs.nixpkgs-review
+      pkgs.nix-prefetch-git
+    ])
   ];
   shellHook = ''
     # workaround because `python setup.py develop` breaks for me
diff --git a/flake.lock b/flake.lock
index 5e12936..d88499a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -22,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1727429674,
-        "narHash": "sha256-2/wcpn7a8xEx/c1/ih1DHTyVLOUME7xLRfi0mOBT35s=",
+        "lastModified": 1727617520,
+        "narHash": "sha256-uNfh3aMyCekMpjtL/PZtl2Hz/YqNuUpCBEzVxt1QYck=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e0f477a570df7375172a08ddb9199c90853c63f0",
+        "rev": "7eee17a8a5868ecf596bbb8c8beb527253ea8f4d",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index ecedf50..f1d629c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,34 +10,45 @@
     treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = inputs @ { flake-parts, ... }:
-    flake-parts.lib.mkFlake { inherit inputs; } ({ lib, ... }: {
-      imports = [ ./treefmt.nix ];
-      systems = [
-        "aarch64-linux"
-        "x86_64-linux"
-        "riscv64-linux"
+  outputs =
+    inputs@{ flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } (
+      { lib, ... }:
+      {
+        imports = [ ./treefmt.nix ];
+        systems = [
+          "aarch64-linux"
+          "x86_64-linux"
+          "riscv64-linux"
 
-        "x86_64-darwin"
-        "aarch64-darwin"
-      ];
-      perSystem = { config, pkgs, self', ... }: {
-        packages.nix-update = pkgs.callPackage ./. { };
-        packages.default = config.packages.nix-update;
+          "x86_64-darwin"
+          "aarch64-darwin"
+        ];
+        perSystem =
+          {
+            config,
+            pkgs,
+            self',
+            ...
+          }:
+          {
+            packages.nix-update = pkgs.callPackage ./. { };
+            packages.default = config.packages.nix-update;
 
-        devShells.default = pkgs.mkShell {
-          inputsFrom = [ config.packages.default ];
+            devShells.default = pkgs.mkShell {
+              inputsFrom = [ config.packages.default ];
 
-          # Make tests use our pinned Nixpkgs
-          env.NIX_PATH = "nixpkgs=${pkgs.path}";
-        };
+              # Make tests use our pinned Nixpkgs
+              env.NIX_PATH = "nixpkgs=${pkgs.path}";
+            };
 
-        checks =
-          let
-            packages = lib.mapAttrs' (n: lib.nameValuePair "package-${n}") self'.packages;
-            devShells = lib.mapAttrs' (n: lib.nameValuePair "devShell-${n}") self'.devShells;
-          in
-          packages // devShells;
-      };
-    });
+            checks =
+              let
+                packages = lib.mapAttrs' (n: lib.nameValuePair "package-${n}") self'.packages;
+                devShells = lib.mapAttrs' (n: lib.nameValuePair "devShell-${n}") self'.devShells;
+              in
+              packages // devShells;
+          };
+      }
+    );
 }
diff --git a/tests/testpkgs/bitbucket.nix b/tests/testpkgs/bitbucket.nix
index 3333479..e3c0ffe 100644
--- a/tests/testpkgs/bitbucket.nix
+++ b/tests/testpkgs/bitbucket.nix
@@ -1,4 +1,8 @@
-{ stdenv, fetchFromBitbucket, isSnapshot }:
+{
+  stdenv,
+  fetchFromBitbucket,
+  isSnapshot,
+}:
 
 let
   # Why this package? No reason, I just found a small package that uses tags
@@ -8,20 +12,19 @@ let
   # As of 2024-04-23, latest version is 9.0.1, so we will be testing that it
   # finds a version greater than 9.0.0. The rev from 2021-03-02 is an untagged
   # commit.
-  version =
-    if (isSnapshot)
-    then "0.16-unstable-2022-10-01"
-    else "9.0.0";
-  rev =
-    if (isSnapshot)
-    then "55b1b849a57341a303ae47eb67c7ecf8c283b7f8"
-    else "v9.0.0";
+  version = if (isSnapshot) then "0.16-unstable-2022-10-01" else "9.0.0";
+  rev = if (isSnapshot) then "55b1b849a57341a303ae47eb67c7ecf8c283b7f8" else "v9.0.0";
 in
 stdenv.mkDerivation rec {
   pname = repo;
   inherit version;
   src = fetchFromBitbucket {
-    inherit owner repo version rev;
+    inherit
+      owner
+      repo
+      version
+      rev
+      ;
     # dont care about hash
     hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
   };
diff --git a/tests/testpkgs/cargo-lock-generate/simple/default.nix b/tests/testpkgs/cargo-lock-generate/simple/default.nix
index c0729f0..b1b668f 100644
--- a/tests/testpkgs/cargo-lock-generate/simple/default.nix
+++ b/tests/testpkgs/cargo-lock-generate/simple/default.nix
@@ -1,6 +1,7 @@
-{ python3Packages
-, rustPlatform
-, fetchFromGitHub
+{
+  python3Packages,
+  rustPlatform,
+  fetchFromGitHub,
 }:
 
 python3Packages.buildPythonPackage rec {
diff --git a/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path-outside-workspace/default.nix b/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path-outside-workspace/default.nix
index f63def8..cda51ca 100644
--- a/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path-outside-workspace/default.nix
+++ b/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path-outside-workspace/default.nix
@@ -1,6 +1,7 @@
-{ python3Packages
-, rustPlatform
-, fetchFromGitHub
+{
+  python3Packages,
+  rustPlatform,
+  fetchFromGitHub,
 }:
 
 python3Packages.buildPythonPackage rec {
diff --git a/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path/default.nix b/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path/default.nix
index b601016..1931817 100644
--- a/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path/default.nix
+++ b/tests/testpkgs/cargo-lock-generate/with-lockfile-metadata-path/default.nix
@@ -1,6 +1,7 @@
-{ python3Packages
-, rustPlatform
-, fetchFromGitHub
+{
+  python3Packages,
+  rustPlatform,
+  fetchFromGitHub,
 }:
 
 python3Packages.buildPythonPackage rec {
diff --git a/tests/testpkgs/composer-old.nix b/tests/testpkgs/composer-old.nix
index 1643872..593f278 100644
--- a/tests/testpkgs/composer-old.nix
+++ b/tests/testpkgs/composer-old.nix
@@ -1,5 +1,6 @@
-{ fetchFromGitHub
-, php
+{
+  fetchFromGitHub,
+  php,
 }:
 
 php.buildComposerProject (finalAttrs: {
diff --git a/tests/testpkgs/composer.nix b/tests/testpkgs/composer.nix
index 672fbfe..98cfc74 100644
--- a/tests/testpkgs/composer.nix
+++ b/tests/testpkgs/composer.nix
@@ -1,6 +1,4 @@
-{ fetchFromGitHub
-, php
-}:
+{ fetchFromGitHub, php }:
 
 php.buildComposerProject2 (finalAttrs: {
   pname = "phpunit";
diff --git a/tests/testpkgs/crate.nix b/tests/testpkgs/crate.nix
index f0ee56e..d2de3f1 100644
--- a/tests/testpkgs/crate.nix
+++ b/tests/testpkgs/crate.nix
@@ -1,4 +1,8 @@
-{ rustPlatform, fetchCrate, hello }:
+{
+  rustPlatform,
+  fetchCrate,
+  hello,
+}:
 
 rustPlatform.buildRustPackage rec {
   pname = "fd-find";
diff --git a/tests/testpkgs/default.nix b/tests/testpkgs/default.nix
index 3580d54..f3fa54c 100644
--- a/tests/testpkgs/default.nix
+++ b/tests/testpkgs/default.nix
@@ -1,11 +1,17 @@
-{ pkgs ? import <nixpkgs> { } }:
+{
+  pkgs ? import <nixpkgs> { },
+}:
 {
   bitbucket = pkgs.callPackage ./bitbucket.nix { isSnapshot = false; };
   bitbucket-snapshot = pkgs.callPackage ./bitbucket.nix { isSnapshot = true; };
   cargoLock.expand = pkgs.callPackage ./cargo-lock-expand { };
   cargoLock.generate.simple = pkgs.callPackage ./cargo-lock-generate/simple { };
-  cargoLock.generate.with-lockfile-metadata-path = pkgs.callPackage ./cargo-lock-generate/with-lockfile-metadata-path { };
-  cargoLock.generate.with-lockfile-metadata-path-outside-workspace = pkgs.callPackage ./cargo-lock-generate/with-lockfile-metadata-path-outside-workspace { };
+  cargoLock.generate.with-lockfile-metadata-path =
+    pkgs.callPackage ./cargo-lock-generate/with-lockfile-metadata-path
+      { };
+  cargoLock.generate.with-lockfile-metadata-path-outside-workspace =
+    pkgs.callPackage ./cargo-lock-generate/with-lockfile-metadata-path-outside-workspace
+      { };
   cargoLock.update = pkgs.callPackage ./cargo-lock-update { };
   composer = pkgs.callPackage ./composer.nix { };
   composer-old = pkgs.callPackage ./composer-old.nix { };
diff --git a/tests/testpkgs/flake.nix b/tests/testpkgs/flake.nix
index 50e33be..3097c45 100644
--- a/tests/testpkgs/flake.nix
+++ b/tests/testpkgs/flake.nix
@@ -1,7 +1,9 @@
 {
-  outputs = { self, nixpkgs }: {
-    packages = nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed (system: {
-      crate = nixpkgs.legacyPackages.${system}.callPackage (self + "/crate.nix") { };
-    });
-  };
+  outputs =
+    { self, nixpkgs }:
+    {
+      packages = nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed (system: {
+        crate = nixpkgs.legacyPackages.${system}.callPackage (self + "/crate.nix") { };
+      });
+    };
 }
diff --git a/tests/testpkgs/npm.nix b/tests/testpkgs/npm.nix
index d5628b6..fb65ba9 100644
--- a/tests/testpkgs/npm.nix
+++ b/tests/testpkgs/npm.nix
@@ -1,6 +1,4 @@
-{ fetchFromGitHub
-, buildNpmPackage
-}:
+{ fetchFromGitHub, buildNpmPackage }:
 
 buildNpmPackage rec {
   pname = "jellyfin-web";
diff --git a/tests/testpkgs/pnpm.nix b/tests/testpkgs/pnpm.nix
index 1a31737..8ee397e 100644
--- a/tests/testpkgs/pnpm.nix
+++ b/tests/testpkgs/pnpm.nix
@@ -1,6 +1,7 @@
-{ fetchFromGitHub
-, pnpm_9
-, stdenv
+{
+  fetchFromGitHub,
+  pnpm_9,
+  stdenv,
 }:
 
 stdenv.mkDerivation rec {
diff --git a/tests/testpkgs/pypi.nix b/tests/testpkgs/pypi.nix
index a8f81de..0fd831f 100644
--- a/tests/testpkgs/pypi.nix
+++ b/tests/testpkgs/pypi.nix
@@ -1,4 +1,10 @@
-{ buildPythonPackage, fetchPypi, twisted, mock, pytestCheckHook }:
+{
+  buildPythonPackage,
+  fetchPypi,
+  twisted,
+  mock,
+  pytestCheckHook,
+}:
 
 buildPythonPackage rec {
   pname = "python-mpd2";
diff --git a/tests/testpkgs/savanna.nix b/tests/testpkgs/savanna.nix
index 63dc9a9..be0dcbb 100644
--- a/tests/testpkgs/savanna.nix
+++ b/tests/testpkgs/savanna.nix
@@ -1,4 +1,8 @@
-{ stdenv, fetchurl, gamin }:
+{
+  stdenv,
+  fetchurl,
+  gamin,
+}:
 
 stdenv.mkDerivation rec {
   pname = "fileschanged";
diff --git a/tests/testpkgs/sourcehut.nix b/tests/testpkgs/sourcehut.nix
index d3c6238..2495145 100644
--- a/tests/testpkgs/sourcehut.nix
+++ b/tests/testpkgs/sourcehut.nix
@@ -1,4 +1,12 @@
-{ buildGoModule, fetchFromSourcehut, lib, jq, installShellFiles, makeWrapper, scdoc }:
+{
+  buildGoModule,
+  fetchFromSourcehut,
+  lib,
+  jq,
+  installShellFiles,
+  makeWrapper,
+  scdoc,
+}:
 
 buildGoModule rec {
   pname = "ijq";
@@ -13,9 +21,17 @@ buildGoModule rec {
 
   vendorHash = "sha256-7UuQXnQdlUMC0ZIgHydQ5bZMB5XrE7dhx5+1NI+zFkM=";
 
-  nativeBuildInputs = [ installShellFiles makeWrapper scdoc ];
+  nativeBuildInputs = [
+    installShellFiles
+    makeWrapper
+    scdoc
+  ];
 
-  ldflags = [ "-s" "-w" "-X main.Version=${version}" ];
+  ldflags = [
+    "-s"
+    "-w"
+    "-X main.Version=${version}"
+  ];
 
   postBuild = ''
     scdoc < ijq.1.scd > ijq.1
diff --git a/treefmt.nix b/treefmt.nix
index e5b57ee..a6f5ab9 100644
--- a/treefmt.nix
+++ b/treefmt.nix
@@ -1,46 +1,28 @@
-{ lib, inputs, ... }: {
-  imports = [
-    inputs.treefmt-nix.flakeModule
-  ];
+{ inputs, ... }:
+{
+  imports = [ inputs.treefmt-nix.flakeModule ];
 
-  perSystem = { pkgs, ... }: {
-    treefmt = {
-      # Used to find the project root
-      projectRootFile = "flake.lock";
+  perSystem =
+    { pkgs, ... }:
+    {
+      treefmt = {
+        # Used to find the project root
+        projectRootFile = "flake.lock";
 
-      programs.prettier.enable = true;
-      programs.mypy.enable = true;
+        programs.deno.enable =
+          pkgs.lib.meta.availableOn pkgs.stdenv.hostPlatform pkgs.deno && !pkgs.deno.meta.broken;
+        programs.mypy.enable = true;
 
-      settings.formatter = {
-        nix = {
-          command = "sh";
-          options = [
-            "-eucx"
-            ''
-              # First deadnix
-              ${lib.getExe pkgs.deadnix} --edit "$@"
-              # Then nixpkgs-fmt
-              ${lib.getExe pkgs.nixpkgs-fmt} "$@"
-            ''
-            "--"
-          ];
-          includes = [ "*.nix" ];
-          excludes = [ "nix/sources.nix" ];
-        };
+        programs.yamlfmt.enable = true;
 
-        python = {
-          command = "sh";
-          options = [
-            "-eucx"
-            ''
-              ${lib.getExe pkgs.ruff} check "$@"
-              ${lib.getExe pkgs.ruff} format "$@"
-            ''
-            "--" # this argument is ignored by bash
-          ];
-          includes = [ "*.py" ];
-        };
+        programs.nixfmt.enable = pkgs.lib.meta.availableOn pkgs.stdenv.buildPlatform pkgs.nixfmt-rfc-style.compiler;
+        programs.deadnix.enable = true;
+        programs.ruff.format = true;
+        programs.ruff.check = true;
+
+        programs.shellcheck.enable = pkgs.lib.meta.availableOn pkgs.stdenv.buildPlatform pkgs.shellcheck.compiler;
+        programs.shfmt.enable = true;
+        settings.formatter.shfmt.includes = [ "*.envrc" ];
       };
     };
-  };
 }