add support for flakes

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1624561540,
+        "narHash": "sha256-izJ2PYZMGMsSkg+e7c9A1x3t/yOLT+qzUM6WQsc2tqo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c6a049a3d32293b24c0f894a840872cf67fd7c11",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,21 @@
+{
+  description = "My personal NUR repository";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  outputs = { self, nixpkgs }:
+    let
+      systems = [
+        "x86_64-linux"
+        "i686-linux"
+        "x86_64-darwin"
+        "aarch64-linux"
+        "armv6l-linux"
+        "armv7l-linux"
+      ];
+      forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
+    in
+    {
+      packages = forAllSystems (system: import ./default.nix {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    };
+}