feat(Justfile): cachix recipe and apply locally without ssh

nix/os/cachix.nix

@@ -0,0 +1,14 @@
+
+# WARN: this file will get overwritten by $ cachix use <name>
+{ pkgs, lib, ... }:
+
+let
+  folder = ./cachix;
+  toImport = name: value: folder + ("/" + name);
+  filterCaches = key: value: value == "regular" && lib.hasSuffix ".nix" key;
+  imports = lib.mapAttrsToList toImport (lib.filterAttrs filterCaches (builtins.readDir folder));
+in {
+  inherit imports;
+  nix.binaryCaches = ["https://cache.nixos.org/"];
+}
+    

nix/os/cachix/nixpkgs-wayland.nix

@@ -0,0 +1,12 @@
+
+{
+  nix = {
+    binaryCaches = [
+      "https://nixpkgs-wayland.cachix.org"
+    ];
+    binaryCachePublicKeys = [
+      "nixpkgs-wayland.cachix.org-1:3lwxaILxMRkVhehr5StQprHdEo4IrE8sRho9R9HOLYA="
+    ];
+  };
+}
+