diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..37dda7d
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1703105089,
+        "narHash": "sha256-1F7hDLj58OQCADRtG2DRKpmJ8QVza0M0NK/kfLWLs3k=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "2b9c57d33e3d5be6262e124fc66e3a8bc650b93d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "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..e285037
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,26 @@
+{
+  description = "The CH592 HID_Keyboard EVT Example";
+
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    flake-utils,
+  }:
+    flake-utils.lib.eachSystem [
+      flake-utils.lib.system.x86_64-linux
+    ] (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
+      devShells = {
+        default = import ./shell.nix {
+          inherit pkgs;
+        };
+      };
+    });
+}
diff --git a/nix/libmcuupdate.nix b/nix/libmcuupdate.nix
new file mode 100644
index 0000000..d99ee2d
--- /dev/null
+++ b/nix/libmcuupdate.nix
@@ -0,0 +1,40 @@
+{ lib
+, stdenv
+, fetchurl
+, hidapi
+, libusb1
+, runtimeShell
+, mrs_toolchain_version ? "1.90"
+, mrs_toolchain_hash ? "sha256-PO7uddJg0L2Ugv7CYLpIyRKAiE+8oXU0nG3NAdYse6g="
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libmcuupdate";
+  version = mrs_toolchain_version;
+
+  src = fetchurl {
+    url = "http://file.mounriver.com/tools/MRS_Toolchain_Linux_x64_V${mrs_toolchain_version}.tar.xz";
+    hash = mrs_toolchain_hash;
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+  dontPatchELF = true;
+  dontStrip = true;
+
+  installPhase = ''
+    mkdir -p $out/lib
+    cp -r beforeinstall/libmcuupdate.so $out/lib/
+  '';
+
+  preFixup = ''
+    find $out -type f | while read f; do
+      patchelf "$f" > /dev/null 2>&1 || continue
+      patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
+      patchelf --set-rpath ${lib.makeLibraryPath [ "$out" stdenv.cc.cc hidapi libusb1 ]} "$f" || true
+    done
+  '';
+
+  meta = {
+  };
+}
diff --git a/nix/mrs-toolchain.nix b/nix/mrs-toolchain.nix
new file mode 100644
index 0000000..4d86e61
--- /dev/null
+++ b/nix/mrs-toolchain.nix
@@ -0,0 +1,37 @@
+{ lib
+, stdenv
+, fetchurl
+, runtimeShell
+, mrs_toolchain_version ? "1.90"
+, mrs_toolchain_hash ? "sha256-PO7uddJg0L2Ugv7CYLpIyRKAiE+8oXU0nG3NAdYse6g="
+}:
+
+stdenv.mkDerivation rec {
+  pname = "gcc-risc-v-embedded";
+  version = mrs_toolchain_version;
+
+  src = fetchurl {
+    url = "http://file.mounriver.com/tools/MRS_Toolchain_Linux_x64_V${mrs_toolchain_version}.tar.xz";
+    hash = mrs_toolchain_hash;
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+  dontPatchELF = true;
+  dontStrip = true;
+
+  installPhase = ''
+    mkdir -p $out/
+    cp -r RISC-V_Embedded_GCC/. $out
+  '';
+
+  preFixup = ''
+    find $out -type f | while read f; do
+      patchelf "$f" > /dev/null 2>&1 || continue
+      patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
+    done
+  '';
+
+  meta = {
+  };
+}
diff --git a/nix/wchisp.nix b/nix/wchisp.nix
new file mode 100644
index 0000000..f871144
--- /dev/null
+++ b/nix/wchisp.nix
@@ -0,0 +1,13 @@
+{ lib, fetchFromGitHub, rustPlatform }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "wchisp";
+  version = "0.3-git";
+  src = fetchFromGitHub {
+    owner = "ch32-rs";
+    repo = pname;
+    rev = "4b4787243ef9bc87cbbb0d95c7482b4f7c9838f1";
+    hash = "sha256-Ju2DBv3R4O48o8Fk/AFXOBIsvGMK9hJ8Ogxk47f7gcU=";
+  };
+  cargoHash = "sha256-MbCLQBk7aJXcUOalsNbSxozvI2Tx3kerLXgi4l7BKoc=";
+}
diff --git a/nix/xpack-riscv-none-elf-gcc.nix b/nix/xpack-riscv-none-elf-gcc.nix
new file mode 100644
index 0000000..2e782f9
--- /dev/null
+++ b/nix/xpack-riscv-none-elf-gcc.nix
@@ -0,0 +1,37 @@
+{ lib
+, stdenv
+, fetchurl
+, runtimeShell
+, xpack_toolchain_version ? "13.2.0-1"
+, xpack_toolchain_hash ? "sha256-1+/1xdd4hzw9SG5dLIBbglgucwgfk+2zdaHvXYR2S0M="
+}:
+
+stdenv.mkDerivation rec {
+  pname = "gcc-risc-v-elf";
+  version = xpack_toolchain_version;
+
+  src = fetchurl {
+    url = "https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases/download/v${version}/xpack-riscv-none-elf-gcc-${version}-linux-x64.tar.gz";
+    hash = xpack_toolchain_hash;
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+  dontPatchELF = true;
+  dontStrip = true;
+
+  installPhase = ''
+    mkdir -p $out/
+    cp -r * $out
+  '';
+
+  preFixup = ''
+    find $out -type f | while read f; do
+      patchelf "$f" > /dev/null 2>&1 || continue
+      patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
+    done
+  '';
+
+  meta = {
+  };
+}
diff --git a/nix/xpack-riscv-none-embed-gcc-8.2.nix b/nix/xpack-riscv-none-embed-gcc-8.2.nix
new file mode 100644
index 0000000..f15413c
--- /dev/null
+++ b/nix/xpack-riscv-none-embed-gcc-8.2.nix
@@ -0,0 +1,41 @@
+{ lib
+, stdenv
+, fetchurl
+, runtimeShell
+# , xpack_toolchain_version ? "8.3.0-2.3"
+# , xpack_toolchain_hash ? "sha256-cI0Mtf8S61rQcBU1lMT3dxzYbUtnIad7I/j+aVyPlAI="
+# , ext ? "tar.gz"
+    , xpack_toolchain_version ? "8.2.0-3.1"
+, xpack_toolchain_hash ? "sha256-PUD6tQ662EJP+FdI8l0uruUPhqXVIiq9ekWi5JDx5PU="
+, ext ? "tgz"
+}:
+
+stdenv.mkDerivation rec {
+  pname = "gcc-risc-v-elf";
+  version = xpack_toolchain_version;
+
+  src = fetchurl {
+    url = "https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases/download/v${version}/xpack-riscv-none-embed-gcc-${version}-linux-x64.${ext}";
+    hash = xpack_toolchain_hash;
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+  dontPatchELF = true;
+  dontStrip = true;
+
+  installPhase = ''
+    mkdir -p $out/
+    cp -r riscv-none-embed-gcc/8.2.0-3.1/* $out
+  '';
+
+  preFixup = ''
+    find $out -type f | while read f; do
+      patchelf "$f" > /dev/null 2>&1 || continue
+      patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
+    done
+  '';
+
+  meta = {
+  };
+}
diff --git a/nix/xpack-riscv-none-embed-gcc.nix b/nix/xpack-riscv-none-embed-gcc.nix
new file mode 100644
index 0000000..3bf31dc
--- /dev/null
+++ b/nix/xpack-riscv-none-embed-gcc.nix
@@ -0,0 +1,38 @@
+{ lib
+, stdenv
+, fetchurl
+, runtimeShell
+, xpack_toolchain_version ? "8.3.0-2.3"
+, xpack_toolchain_hash ? "sha256-cI0Mtf8S61rQcBU1lMT3dxzYbUtnIad7I/j+aVyPlAI="
+, ext ? "tar.gz"
+}:
+
+stdenv.mkDerivation rec {
+  pname = "gcc-risc-v-elf";
+  version = xpack_toolchain_version;
+
+  src = fetchurl {
+    url = "https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases/download/v${version}/xpack-riscv-none-embed-gcc-${version}-linux-x64.${ext}";
+    hash = xpack_toolchain_hash;
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+  dontPatchELF = true;
+  dontStrip = true;
+
+  installPhase = ''
+    mkdir -p $out/
+    cp -r * $out
+  '';
+
+  preFixup = ''
+    find $out -type f | while read f; do
+      patchelf "$f" > /dev/null 2>&1 || continue
+      patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
+    done
+  '';
+
+  meta = {
+  };
+}
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..e24a5b4
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,72 @@
+{ pkgs ? import <nixpkgs> {}
+, mrs_toolchain_version ? "1.90"
+, mrs_toolchain_hash ? "sha256-PO7uddJg0L2Ugv7CYLpIyRKAiE+8oXU0nG3NAdYse6g="
+}:
+
+let
+  libmcuupdate = pkgs.callPackage ./nix/libmcuupdate.nix {
+    inherit 
+      mrs_toolchain_version
+      mrs_toolchain_hash;
+  };
+  mrs-toolchain = pkgs.callPackage ./nix/mrs-toolchain.nix {
+    inherit 
+      mrs_toolchain_version
+      mrs_toolchain_hash;
+  };
+  xpack-riscv-none-embed-gcc-8_2 = pkgs.callPackage ./nix/xpack-riscv-none-embed-gcc-8.2.nix {
+    xpack_toolchain_version = "8.2.0-3.1";
+    xpack_toolchain_hash = "sha256-PUD6tQ662EJP+FdI8l0uruUPhqXVIiq9ekWi5JDx5PU=";
+    ext = "tgz";
+  };
+  xpack-riscv-none-embed-gcc-8_3 = pkgs.callPackage ./nix/xpack-riscv-none-embed-gcc.nix {
+    xpack_toolchain_version = "8.3.0-2.3";
+    xpack_toolchain_hash = "sha256-cI0Mtf8S61rQcBU1lMT3dxzYbUtnIad7I/j+aVyPlAI=";
+  };
+  xpack-riscv-none-embed-gcc-10_1 = pkgs.callPackage ./nix/xpack-riscv-none-embed-gcc.nix {
+    xpack_toolchain_version = "10.1.0-1.2";
+    xpack_toolchain_hash = "sha256-xg3oiAzqnfIHst+CDTfOq44CtIeD5znCyM/h8qBv4xA=";
+  };
+  xpack-riscv-none-embed-gcc = pkgs.callPackage ./nix/xpack-riscv-none-embed-gcc.nix {
+    xpack_toolchain_version = "10.2.0-1.2";
+    xpack_toolchain_hash = "sha256-1yvc0e7kHcWiCKigOXa3DQFFEN61iQyehzjoBLoj+YU=";
+  };
+  xpack-riscv-none-elf-gcc-11_3 = pkgs.callPackage ./nix/xpack-riscv-none-elf-gcc.nix {
+    xpack_toolchain_version = "11.3.0-1";
+    xpack_toolchain_hash = "sha256-HJn7FXP/LtXe/85ky5a7knLzUfBUaExJ39WtQcbdgE0=";
+  };
+  xpack-riscv-none-elf-gcc-12_3 = pkgs.callPackage ./nix/xpack-riscv-none-elf-gcc.nix {
+    xpack_toolchain_version = "12.3.0-2";
+    xpack_toolchain_hash = "sha256-mSHWPARhGVSvAWucp0zVLBzLgygA0yHWfk5lHxYUbRY=";
+  };
+  xpack-riscv-none-elf-gcc = pkgs.callPackage ./nix/xpack-riscv-none-elf-gcc.nix {
+    xpack_toolchain_version = "13.2.0-1";
+    xpack_toolchain_hash = "sha256-1+/1xdd4hzw9SG5dLIBbglgucwgfk+2zdaHvXYR2S0M=";
+  };
+  python = pkgs.python3.withPackages (python-packages: with python-packages; [
+    cbor2
+    click
+    cryptography
+    intelhex
+    pyyaml
+  ]);
+  wchisp = pkgs.callPackage ./nix/wchisp.nix {};
+in
+
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    hidapi
+    libjaylink
+    libusb1
+    mbedtls
+    ncurses5
+    cmake
+    ccache
+  ] ++ [
+    libmcuupdate
+    mrs-toolchain
+    xpack-riscv-none-elf-gcc
+    python
+    wchisp
+  ];
+}