initial app add

Signed-off-by: ahuston-0 <aliceghuston@gmail.com>

flake.nix

@@ -0,0 +1,39 @@
+{
+  description = "Application packaged using poetry2nix";
+
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable-small";
+    poetry2nix = {
+      url = "github:nix-community/poetry2nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    pre-commit-hooks = {
+      url = "github:cachix/pre-commit-hooks.nix";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        # nixpkgs-stable.follows = "nixpkgs-stable";
+        # flake-compat.follows = "flake-compat";
+      };
+    };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, poetry2nix,pre-commit-hooks }@inputs:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        # see https://github.com/nix-community/poetry2nix/tree/master#api for more functions and examples.
+        pkgs = nixpkgs.legacyPackages.${system};
+        inherit (poetry2nix.lib.mkPoetry2Nix { inherit pkgs; }) mkPoetryApplication;
+      in
+      rec {
+        packages = {
+          myapp = mkPoetryApplication { projectDir = self; };
+          default = self.packages.${system}.myapp;
+        };
+
+        formatter = pkgs.nixfmt-rfc-style;
+
+        devShells = import ./shell.nix {inherit self inputs system checks;};
+        checks = import ./checks.nix {inherit inputs system formatter;};
+      });
+}