diff --git a/.bestool.nix b/.bestool.nix
new file mode 100644
index 0000000..593bc85
--- /dev/null
+++ b/.bestool.nix
@@ -0,0 +1,26 @@
+{ lib
+, pkgs
+, rustPlatform
+,
+}:
+rustPlatform.buildRustPackage {
+  name = "bestool";
+
+  src = ./bestool;
+
+  cargoLock = {
+    lockFile = ./bestool/Cargo.lock;
+    allowBuiltinFetchGit = true;
+  };
+
+  nativeBuildInputs = with pkgs; [ pkg-config ];
+  buildInputs = with pkgs; [ systemd.dev ];
+
+  meta = with lib; {
+    description = "";
+    homepage = "https://github.com/Ralim/bestool";
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ shymega ];
+    license = licenses.mit;
+  };
+}
diff --git a/.github/workflows/ci-debug-builds-linux.yml b/.github/workflows/ci-debug-builds-linux.yml
new file mode 100644
index 0000000..0d664b6
--- /dev/null
+++ b/.github/workflows/ci-debug-builds-linux.yml
@@ -0,0 +1,60 @@
+---
+name: Nightly builder (Linux)
+
+on:
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build-nightlies-linux:
+    name: Nightly builds for Linux
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        target: [aarch64-unknown-linux-musl, x86_64-unknown-linux-musl]
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Cache Rust assets
+        id: rust-cache
+        uses: Swatinem/rust-cache@v2
+      - name: Configure Rust
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          default: true
+          override: true
+          target: ${{ matrix.target }}
+          profile: minimal
+      - name: Install Cross
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: brndnmtthws/rust-action-cargo-binstall@v1.1.0
+        with:
+          packages: cross
+      - name: Build bestool release for Linux.
+        id: build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: >-
+            --all --locked --verbose --target=${{ matrix.target }}
+          use-cross: true
+      - name: Create nightly release
+        continue-on-error: true
+        uses: actions/create-release@v1
+        with:
+          draft: false
+          prerelease: true
+          body: "Nightly build of `bestool` for Linux: ${{ matrix.target }}"
+          release_name: bestool-nightly-${{ matrix.target }}
+          tag_name: bestool-nightly-${{ matrix.target }}
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+      - name: Upload debug nightly build
+        run: gh release upload bestool-nightly-${{ matrix.target }} ${{ github.workspace }}/target/${{ matrix.target }}/debug/bestool --clobber
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/ci-debug-builds-macos.yml b/.github/workflows/ci-debug-builds-macos.yml
new file mode 100644
index 0000000..e7a9ae8
--- /dev/null
+++ b/.github/workflows/ci-debug-builds-macos.yml
@@ -0,0 +1,54 @@
+---
+name: Nightly builder (macOS)
+
+on:
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build-nightlies-macos:
+    name: Nightly builds for macOS
+    runs-on: macos-14
+    strategy:
+      fail-fast: true
+      matrix:
+        target: [aarch64-apple-darwin, x86_64-apple-darwin]
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Cache Rust assets
+        id: rust-cache
+        uses: Swatinem/rust-cache@v2
+      - name: Configure Rust
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          default: true
+          override: true
+          target: ${{ matrix.target }}
+          profile: minimal
+      - name: Build bestool release for macOS.
+        id: build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: >-
+            --all --locked --verbose --target=${{ matrix.target }}
+      - name: Create nightly release
+        continue-on-error: true
+        uses: actions/create-release@v1
+        with:
+          draft: false
+          prerelease: true
+          body: "Nightly build of `bestool` for macOS: ${{ matrix.target }}"
+          release_name: bestool-nightly-${{ matrix.target }}
+          tag_name: bestool-nightly-${{ matrix.target }}
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+      - name: Upload debug nightly build
+        run: gh release upload bestool-nightly-${{ matrix.target }} ${{ github.workspace }}/target/${{ matrix.target }}/debug/bestool --clobber
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/ci-debug-builds-windows.yml b/.github/workflows/ci-debug-builds-windows.yml
new file mode 100644
index 0000000..b06346f
--- /dev/null
+++ b/.github/workflows/ci-debug-builds-windows.yml
@@ -0,0 +1,54 @@
+---
+name: Nightly builder (Windows)
+
+on:
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build-nightlies-windows:
+    name: Nightly builds for Windows
+    runs-on: windows-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        target: [x86_64-pc-windows-gnu]
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Cache Rust assets
+        id: rust-cache
+        uses: Swatinem/rust-cache@v2
+      - name: Configure Rust
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          default: true
+          override: true
+          target: ${{ matrix.target }}
+          profile: minimal
+      - name: Build bestool release for Windows.
+        id: build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: >-
+            --all --locked --verbose --target=${{ matrix.target }}
+      - name: Create nightly release
+        continue-on-error: true
+        uses: actions/create-release@v1
+        with:
+          draft: false
+          prerelease: true
+          body: "Nightly build of `bestool` for Windows: ${{ matrix.target }}"
+          release_name: bestool-nightly-${{ matrix.target }}
+          tag_name: bestool-nightly-${{ matrix.target }}
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+      - name: Upload debug nightly build
+        run: gh release upload bestool-nightly-${{ matrix.target }} ${{ github.workspace }}/target/${{ matrix.target }}/debug/bestool.exe --clobber
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/ci-debug-builds.yml b/.github/workflows/ci-debug-builds.yml
new file mode 100644
index 0000000..254402f
--- /dev/null
+++ b/.github/workflows/ci-debug-builds.yml
@@ -0,0 +1,43 @@
+---
+name: Nightly Builders
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: 0 0 * * 1
+
+jobs:
+  check_date:
+    runs-on: ubuntu-latest
+    name: Check latest commit
+    if: ${{ github.event_name == 'schedule' }}
+    outputs:
+      should_run: ${{ steps.should_run.outputs.should_run }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - id: should_run
+        continue-on-error: true
+        name: Check latest commit is less than a day
+        run: test -z $(git rev-list  --after="24 hours"  ${{ github.sha }}) && echo
+          "::set-output name=should_run::false"
+
+  build-macos-debug:
+    needs: check_date
+    if: ${{ needs.check_date.outputs.should_run != 'false' }}
+    uses: ./.github/workflows/ci-debug-builds-macos.yml
+    secrets: inherit
+
+  build-linux-debug:
+    needs: check_date
+    if: ${{ needs.check_date.outputs.should_run != 'false' }}
+    uses: ./.github/workflows/ci-debug-builds-linux.yml
+    secrets: inherit
+
+  build-windows-debug:
+    needs: check_date
+    if: ${{ needs.check_date.outputs.should_run != 'false' }}
+    uses: ./.github/workflows/ci-debug-builds-windows.yml
+    secrets: inherit
diff --git a/.github/workflows/ci-tests-common.yml b/.github/workflows/ci-tests-common.yml
new file mode 100644
index 0000000..fa94e43
--- /dev/null
+++ b/.github/workflows/ci-tests-common.yml
@@ -0,0 +1,34 @@
+---
+name: CI tests (Common)
+
+on:
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  run-tests:
+    name: Common CI tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Configure Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          components: clippy,rustfmt
+          override: true
+          default: true
+      - name: Install `cargo-audit`
+        run: cargo install --locked cargo-audit
+      - name: Install `cargo-vet`
+        run: cargo install --locked cargo-vet --version "0.9.0"
+      - name: Run `cargo-vet`
+        run: cargo vet --locked
+        working-directory: src/oldbestool
+      - name: Run `cargo-audit`
+        run: cargo audit -D unsound -D yanked -D unmaintained  --ignore "RUSTSEC-2020-0168" 
+        working-directory: src/oldbestool
diff --git a/.github/workflows/ci-tests-linux.yml b/.github/workflows/ci-tests-linux.yml
new file mode 100644
index 0000000..36e25f2
--- /dev/null
+++ b/.github/workflows/ci-tests-linux.yml
@@ -0,0 +1,59 @@
+---
+name: CI tests (Linux)
+
+on:
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  run-linux-tests:
+    name: CI tests for ${{ matrix.target }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        target: [aarch64-unknown-linux-musl, x86_64-unknown-linux-musl]
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Cache Rust assets
+        id: rust-cache
+        uses: Swatinem/rust-cache@v2
+      - name: Configure Rust
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          components: clippy,rustfmt
+          override: true
+          target: ${{ matrix.target }}
+          default: true
+      - name: Install Cross
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: brndnmtthws/rust-action-cargo-binstall@v1.1.0
+        with:
+          packages: cross
+
+      - name: Run Linux tests of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --target=${{ matrix.target }}
+          use-cross: true
+
+      - name: Run Linux checks of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --target=${{ matrix.target }}
+          use-cross: true
+
+      - name: Run Linux Clippy tests of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --target=${{ matrix.target }}
+          use-cross: true
diff --git a/.github/workflows/ci-tests-macos.yml b/.github/workflows/ci-tests-macos.yml
new file mode 100644
index 0000000..20f17ce
--- /dev/null
+++ b/.github/workflows/ci-tests-macos.yml
@@ -0,0 +1,48 @@
+---
+name: CI tests (macOS)
+
+on:
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  run-macos-tests:
+    name: CI tests for ${{ matrix.target }}
+    runs-on: macos-14
+    strategy:
+      fail-fast: true
+      matrix:
+        target: [aarch64-apple-darwin, x86_64-apple-darwin]
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Cache Rust assets
+        id: rust-cache
+        uses: Swatinem/rust-cache@v2
+      - name: Configure Rust
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          components: clippy,rustfmt
+          override: true
+          target: ${{ matrix.target }}
+          default: true
+      - name: Run macOS tests of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --target=${{ matrix.target }}
+      - name: Run macOS checks of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --target=${{ matrix.target }}
+      - name: Run macOS Clippy tests of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --target=${{ matrix.target }}
diff --git a/.github/workflows/ci-tests-nix.yml b/.github/workflows/ci-tests-nix.yml
new file mode 100644
index 0000000..ca153bf
--- /dev/null
+++ b/.github/workflows/ci-tests-nix.yml
@@ -0,0 +1,22 @@
+---
+name: CI tests (Nix)
+
+on:
+  workflow_call:
+
+jobs:
+  run-tests:
+    name: Nix CI tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v25
+      - name: Build Nix package
+        run: nix build
+      - name: Check Flake formatting
+        run: nix run nixpkgs#nixpkgs-fmt -- --check ./
+      - name: Check Flake with Nix
+        run: nix flake check
+      - name: Check Flake with Statix
+        run: nix run nixpkgs#statix -- check ./
diff --git a/.github/workflows/ci-tests-windows.yml b/.github/workflows/ci-tests-windows.yml
new file mode 100644
index 0000000..a72bcd5
--- /dev/null
+++ b/.github/workflows/ci-tests-windows.yml
@@ -0,0 +1,48 @@
+---
+name: CI tests (Windows)
+
+on:
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  run-windows-tests:
+    name: CI tests for ${{ matrix.target }}
+    runs-on: windows-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        target: [x86_64-pc-windows-gnu]
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Cache Rust assets
+        id: rust-cache
+        uses: Swatinem/rust-cache@v2
+      - name: Configure Rust
+        if: ${{ steps.rust-cache.outputs.cache-hit != 'true' }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          components: clippy,rustfmt
+          override: true
+          target: ${{ matrix.target }}
+          default: true
+      - name: Run Windows tests of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --target=${{ matrix.target }}
+      - name: Run Windows checks of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --target=${{ matrix.target }}
+      - name: Run Windows Clippy tests of `bestool`
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --target=${{ matrix.target }}
diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
new file mode 100644
index 0000000..2a02964
--- /dev/null
+++ b/.github/workflows/ci-tests.yml
@@ -0,0 +1,28 @@
+---
+name: CI Tests
+
+on:
+  push:
+    paths: ["src/", "Cargo.toml", "Cargo.lock"]
+  workflow_dispatch:
+
+jobs:
+  test-macos:
+    uses: ./.github/workflows/ci-tests-macos.yml
+    secrets: inherit
+  
+  test-nix:
+    uses: ./.github/workflows/ci-tests-nix.yml
+    secrets: inherit
+
+  test-linux:
+    uses: ./.github/workflows/ci-tests-linux.yml
+    secrets: inherit
+
+  test-windows:
+    uses: ./.github/workflows/ci-tests-windows.yml
+    secrets: inherit
+
+  test-common:
+    uses: ./.github/workflows/ci-tests-common.yml
+    secrets: inherit
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
deleted file mode 100644
index a0db7d1..0000000
--- a/.github/workflows/test.yml
+++ /dev/null
@@ -1,51 +0,0 @@
-name: Tests & Build
-on: [push, pull_request]
-
-jobs:
-  test:
-    name: cargo test
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - run: sudo apt-get update && sudo apt-get install -y libudev-dev
-      - run: cargo test 
-        working-directory: bestool
-  audit:
-    name: cargo audits
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          components: clippy,rustfmt
-      - run: sudo apt-get update && sudo apt-get install -y libudev-dev
-      - run: cargo install cargo-audit 
-        working-directory: bestool
-      - run: cargo clippy -- -D warnings --no-deps
-        working-directory: bestool
-      # Ignoring mach being unmaintained for now as limited options + its only for MacOS
-      - run: cargo audit -D unsound -D yanked -D unmaintained  --ignore "RUSTSEC-2020-0168"
-        working-directory: bestool
-  vet:
-    name: cargo vet
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          components: clippy,rustfmt
-      - run: sudo apt-get update && sudo apt-get install -y libudev-dev
-      - run: cargo install --locked cargo-vet --version "0.9.0"
-        working-directory: bestool
-      - run: cargo vet --locked
-        working-directory: bestool
-  build:
-    name: cargo build
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - run: sudo apt-get update && sudo apt-get install -y libudev-dev
-      - run: cargo build
-        working-directory: bestool
diff --git a/bestool/res/chunk1.bin b/bestool/res/chunk1.bin
new file mode 100644
index 0000000..13535bc
Binary files /dev/null and b/bestool/res/chunk1.bin differ
diff --git a/bestool/res/chunk2.bin b/bestool/res/chunk2.bin
new file mode 100644
index 0000000..0e9a20d
Binary files /dev/null and b/bestool/res/chunk2.bin differ
diff --git a/bestool/res/programmer.bin b/bestool/res/programmer.bin
new file mode 100644
index 0000000..34eaf62
Binary files /dev/null and b/bestool/res/programmer.bin differ
diff --git a/bestool/src/beslink/bootloader.rs b/bestool/src/beslink/bootloader.rs
index 1196d35..6013eae 100644
--- a/bestool/src/beslink/bootloader.rs
+++ b/bestool/src/beslink/bootloader.rs
@@ -4,7 +4,7 @@ use std::io::Write;
 use tracing::error;
 use tracing::info;
 //Embed the bin file for future
-const PROGRAMMER_BINARY: &[u8; 75928] = include_bytes!("../../../programmer.bin");
+const PROGRAMMER_BINARY: &[u8; 75928] = include_bytes!("../../res/programmer.bin");
 
 pub fn load_programmer_runtime_binary_blob(
     serial_port: &mut Box<dyn SerialPort>,
diff --git a/bestool/src/beslink/write_flash.rs b/bestool/src/beslink/write_flash.rs
index 575bf9e..21a0b83 100644
--- a/bestool/src/beslink/write_flash.rs
+++ b/bestool/src/beslink/write_flash.rs
@@ -196,8 +196,8 @@ mod tests {
     use crate::beslink::write_flash::get_flash_chunk_msg;
 
     //Embed the bin file for future
-    const CHUNK1_TEST: &[u8; 32768] = include_bytes!("../../../chunk1.bin");
-    const CHUNK2_TEST: &[u8; 32768] = include_bytes!("../../../chunk2.bin");
+    const CHUNK1_TEST: &[u8; 32768] = include_bytes!("../../res/chunk1.bin");
+    const CHUNK2_TEST: &[u8; 32768] = include_bytes!("../../res/chunk2.bin");
 
     #[test]
     fn test_get_flash_chunk_msg() {
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..7aef5d9
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,78 @@
+{
+  "nodes": {
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1733328505,
+        "narHash": "sha256-NeCCThCEP3eCl2l/+27kNNK7QrwZB1IJCrXfrbv5oqU=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "ff81ac966bb2cae68946d5ed5fc4994f96d0ffec",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1740019556,
+        "narHash": "sha256-vn285HxnnlHLWnv59Og7muqECNMS33mWLM14soFIv2g=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "dad564433178067be1fbdfcce23b546254b6d641",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..c6e2401
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,42 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    flake-compat = {
+      url = "github:edolstra/flake-compat";
+      flake = false;
+    };
+  };
+  outputs =
+    { self
+    , nixpkgs
+    , flake-utils
+    , ...
+    }:
+    flake-utils.lib.eachDefaultSystem
+      (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+      in
+      with pkgs; {
+        packages.bestool = callPackage ./.bestool.nix { };
+        packages.default = self.packages.${system}.bestool;
+
+        devShells.default = mkShell {
+          inputsFrom = lib.singleton self.packages.${system}.default;
+          buildInputs = [
+            cargo-edit
+            clippy
+            rustfmt
+          ];
+          RUST_SRC_PATH = rustPlatform.rustLibSrc;
+        };
+        })
+    // {
+      overlays.default = final: prev: {
+        inherit (self.packages.${final.system}) bestool;
+      };
+    };
+}