holy moly we're almost there

profiles/cachix/default.nix

@@ -0,0 +1,11 @@
+{ pkgs, lib, ... }:
+let
+  folder = ./.;
+  toImport = name: value: folder + ("/" + name);
+  filterCaches = key: value: value == "regular" && lib.hasSuffix ".nix" key && key != "default.nix";
+  imports = lib.mapAttrsToList toImport (lib.filterAttrs filterCaches (builtins.readDir folder));
+in
+{
+  inherit imports;
+  nix.binaryCaches = [ "https://cache.nixos.org/" ];
+}

profiles/cachix/nix-community.nix

@@ -0,0 +1,10 @@
+{
+  nix = {
+    binaryCaches = [
+      "https://nix-community.cachix.org"
+    ];
+    binaryCachePublicKeys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+}

profiles/cachix/nrdxp.nix

@@ -0,0 +1,10 @@
+{
+  nix = {
+    binaryCaches = [
+      "https://nrdxp.cachix.org"
+    ];
+    binaryCachePublicKeys = [
+      "nrdxp.cachix.org-1:Fc5PSqY2Jm1TrWfm88l6cvGWwz3s93c6IOifQWnhNW4="
+    ];
+  };
+}