initial python packaging and nix flake

flake.nix

@@ -0,0 +1,47 @@
+{
+  description = "custominstall";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    pyctr.url = "github:ihaveamac/pyctr/master";
+    pyctr.inputs.nixpkgs.follows = "nixpkgs";
+    hax-nur.url = "github:ihaveamac/nur-packages/master";
+    hax-nur.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs =
+    inputs@{
+      self,
+      nixpkgs,
+      pyctr,
+      hax-nur,
+    }:
+    let
+      systems = [
+        "x86_64-linux"
+        "i686-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+        "aarch64-linux"
+        "armv6l-linux"
+        "armv7l-linux"
+      ];
+      forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
+    in
+    {
+      legacyPackages = forAllSystems (
+        system:
+        (import ./default.nix {
+          pkgs = import nixpkgs { inherit system; };
+          pyctr = pyctr.packages.${system}.pyctr;
+          save3ds = hax-nur.packages.${system}.save3ds;
+        })
+        // {
+          default = self.legacyPackages.${system}.custominstall;
+        }
+      );
+      packages = forAllSystems (
+        system: nixpkgs.lib.filterAttrs (_: v: nixpkgs.lib.isDerivation v) self.legacyPackages.${system}
+      );
+    };
+}