Add nix stuff

flake.lock

@@ -0,0 +1,26 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1665613119,
+        "narHash": "sha256-VTutbv5YKeBGWou6ladtgfx11h6et+Wlkdyh4jPJ3p0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e06bd4b64bbfda91d74f13cb5eca89485d47528f",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-22.05",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,12 @@
+{
+  description = "scalable stuff";
+
+  inputs.nixpkgs.url = "nixpkgs/nixos-22.05";
+
+  outputs = { self, nixpkgs }: let
+    system = "x86_64-linux";
+    pkgs = nixpkgs.legacyPackages.${system};
+  in {
+    devShells.${system}.default = pkgs.callPackage ./shell.nix {};
+  };
+}

shell.nix

@@ -0,0 +1,13 @@
+{ pkgs ? import <nixpkgs> {}, ... }:
+pkgs.mkShell {
+  packages = with pkgs; [
+    scala
+    sbt
+  ];
+
+  shellHook = ''
+    export PS1="\[\e[31m\][\[\e[m\]\[\e[35m\]l\[\e[m\]\[\e[33m\]m\[\e[m\]\[\e[32m\]a\[\e[m\]\[\e[36m\]o\[\e[m\]\[\e[34m\]>\[\e[m\] "
+  '';
+
+  # TODO: move the ivy2 package cache here so it doesn't mess up the home dir.
+}