Switch to NixOS and various fixes

modules/kakoune.nix

@@ -1,6 +1,6 @@
 { config, lib, pkgs, ... }:
 let
-  unstable = import <nixos-unstable> {};
+  nixpkgs = import <nixpkgs> {};
 in {
 	home.packages = with pkgs; [
 		kak-lsp
@@ -8,6 +8,11 @@ in {
 		gocode
 		gogetdoc
 		jq
+		aspell
+		aspellDicts.it
+		aspellDicts.en
+		aspellDicts.en-computers
+		aspellDicts.en-science
 	];
 
   programs.kakoune = {
@@ -66,11 +71,12 @@ in {
   		"require-module auto-pairs"
   		"require-module powerline"
    	];
-  	plugins = with pkgs.kakounePlugins; [
+  	plugins = (with pkgs.kakounePlugins; [
   		kak-auto-pairs
-  		unstable.kakounePlugins.powerline-kak
-  		unstable.kakounePlugins.prelude-kak
-  	];
+  	]) ++ (with nixpkgs; [
+  		kakounePlugins.prelude-kak
+  		kakounePlugins.powerline-kak
+  	]);
   };
 
   xdg.configFile."kak-lsp/kak-lsp.toml".source = ../configs/kak-lsp/kak-lsp.toml;