diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..5c04289a
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,3 @@
+watch_file nix
+
+use flake
diff --git a/.gitignore b/.gitignore
index 7cb883f2..b52db457 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 target
-
 /.env
+
+/.direnv
diff --git a/cli/js/package-lock.json b/cli/js/package-lock.json
index db5b6216..f6dd14e9 100644
--- a/cli/js/package-lock.json
+++ b/cli/js/package-lock.json
@@ -27,10 +27,10 @@
     },
     "../../node-wasm/js": {
       "name": "lumina-node",
-      "version": "0.7.0",
+      "version": "0.8.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "lumina-node-wasm": "0.7.0"
+        "lumina-node-wasm": "0.8.0"
       },
       "devDependencies": {
         "concat-md": "^0.5.1",
@@ -41,7 +41,7 @@
     },
     "../../node-wasm/pkg": {
       "name": "lumina-node-wasm",
-      "version": "0.7.0",
+      "version": "0.8.0",
       "license": "Apache-2.0"
     },
     "node_modules/@cosmjs/amino": {
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 00000000..c265e850
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,97 @@
+{
+  "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1739255730,
+        "narHash": "sha256-RkZx53J5UZu58DclU13tKzwo0oaTIiHgT+ncbaaCnT8=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "c023dde9e8b73c78348384661cf3d5e5f209558d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1738453229,
+        "narHash": "sha256-7H9XgNiGLKN1G1CgRh0vUL4AheZSYzPm+zmZ7vxbJdo=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "32ea77a06711b758da0ad9bd6a844c5740a87abd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1739138025,
+        "narHash": "sha256-M4ilIfGxzbBZuURokv24aqJTbdjPA9K+DtKUzrJaES4=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "b2243f41e860ac85c0b446eadc6930359b294e79",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1738452942,
+        "narHash": "sha256-vJzFZGaCpnmo7I6i416HaBLpC+hvcURh/BQwROcGIp8=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/072a6db25e947df2f31aab9eccd0ab75d5b2da11.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/072a6db25e947df2f31aab9eccd0ab75d5b2da11.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "fenix": "fenix",
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1739201154,
+        "narHash": "sha256-jP/Z+X28XQMqR6fWkIokJ45dVBkvsTe4dQOq5s/sA+4=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "f5e7172e96ff8a75af99ac570085d22a4afab09b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 00000000..7b7d40d4
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,24 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixpkgs-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    fenix.url = "github:nix-community/fenix";
+    fenix.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs =
+    inputs@{ flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      systems = [
+        "aarch64-linux"
+        "aarch64-darwin"
+        "x86_64-linux"
+      ];
+      perSystem = {
+        imports = [
+          ./nix/devshells.nix
+          ./nix/packages.nix
+        ];
+      };
+    };
+}
diff --git a/nix/devshells.nix b/nix/devshells.nix
new file mode 100644
index 00000000..903a60e2
--- /dev/null
+++ b/nix/devshells.nix
@@ -0,0 +1,97 @@
+{
+  inputs',
+  pkgs,
+  lib,
+  ...
+}:
+
+let
+  fenix = inputs'.fenix.packages;
+
+  # creates list of components taken from a toolchain for given channel
+  rustComponents =
+    channel:
+    [
+      "rustc"
+      "cargo"
+      "clippy"
+      "rustfmt"
+    ]
+    ++ lib.optionals (channel == "stable") [
+      "rust-analyzer"
+    ];
+
+  # creates list of the extra targets to be installed for given channel
+  rustExtraTargets =
+    channel:
+    [
+      "wasm32-unknown-unknown"
+    ]
+    ++ lib.optionals (channel == "stable") [
+      # android
+      "aarch64-linux-android"
+      "armv7-linux-androideabi"
+      "x86_64-linux-android"
+      "i686-linux-android"
+      # ios
+      "aarch64-apple-ios"
+      "aarch64-apple-ios-sim"
+    ];
+
+  # creates toolchain configuration for given channel
+  rustToolchain =
+    channel:
+    fenix.combine [
+      # components
+      (fenix."${channel}".withComponents (rustComponents channel))
+      # extra targets
+      (lib.lists.map (target: fenix.targets."${target}"."${channel}".rust-std) (rustExtraTargets channel))
+    ];
+
+  # wrapper for cargo to allow `+channel` syntax
+  cargoWrapper = pkgs.writeShellScriptBin "cargo" ''
+    case "$1" in
+      "+stable")
+        shift
+        exec env PATH="${rustToolchain "stable"}/bin:$PATH" cargo "$@"
+        ;;
+      "+nightly")
+        shift
+        exec env PATH="${rustToolchain "latest"}/bin:$PATH" cargo "$@"
+        ;;
+      "+"*)
+        echo "Channel $1 not installed. You may need to add it to the devShell" >&2
+        exit 1
+        ;;
+      *)
+        exec env PATH="${rustToolchain "stable"}/bin:$PATH" cargo "$@"
+        ;;
+    esac
+  '';
+in
+{
+  devShells.default = pkgs.mkShell {
+    packages = with pkgs; [
+      # c/gnu base
+      gnumake
+      pkg-config
+      stdenv
+
+      # rust - toolchain
+      cargoWrapper # first in PATH, to be invoked instead one from toolchain
+      (rustToolchain "stable")
+      # rust - wasm
+      binaryen # wasm-opt
+      wasm-bindgen-cli_0_2_100
+      wasm-pack
+      # rust - other
+      cargo-edit
+      cargo-ndk
+      cargo-udeps
+
+      # javascript
+      nodejs
+      nodePackages.typescript-language-server
+    ];
+  };
+}
diff --git a/nix/packages.nix b/nix/packages.nix
new file mode 100644
index 00000000..f398b4f3
--- /dev/null
+++ b/nix/packages.nix
@@ -0,0 +1,5 @@
+{ ... }:
+
+{
+  packages.default = { };
+}