add flake.nix

Author: DavHau

default.nix

@@ -1,4 +1,8 @@
-with import <nixpkgs> {};
+{
+  pkgs ? import <nixpkgs> {},
+}:
+
+with pkgs;
 stdenv.mkDerivation {
   name = "nixos-shell";
   src = builtins.filterSource

flake.lock

@@ -0,0 +1,22 @@
+{
+  description = "Spawns lightweight nixos vms in a shell";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+  };
+
+  outputs = inp:
+  let
+    lib = inp.nixpkgs.lib;
+    supportedSystems = [ "x86_64-linux" ];
+  in
+  lib.foldl' lib.recursiveUpdate {} (lib.forEach supportedSystems (system: rec {
+
+    packages."${system}".nixos-shell = import ./default.nix {
+      pkgs = inp.nixpkgs.legacyPackages."${system}";
+    };
+
+    defaultPackage."${system}" = packages."${system}".nixos-shell;
+
+  }));
+}