diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..69125b4
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1768564909,
+        "narHash": "sha256-Kell/SpJYVkHWMvnhqJz/8DqQg2b6PguxVWOuadbHCc=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "e4bae1bd10c9c57b2cf517953ab70060a828ee6f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/justfile b/justfile
index 5579821..5779a64 100644
--- a/justfile
+++ b/justfile
@@ -1,2 +1,8 @@
 neville:
     julia -i "./neville-algo-ml.jl"
+
+test_langs:
+    cargo run
+    uv run python ./main.py
+    julia ./neville-algo-ml.jl
+    nix flake info
diff --git a/uv.lock b/uv.lock
new file mode 100644
index 0000000..65a2d07
--- /dev/null
+++ b/uv.lock
@@ -0,0 +1,8 @@
+version = 1
+revision = 3
+requires-python = ">=3.13"
+
+[[package]]
+name = "minis"
+version = "0.1.0"
+source = { virtual = "." }