[neovim] Adds configs. Auto-sessions doesn't load properly.

home-manager/features/neovim.nix

@@ -0,0 +1,42 @@
+{ pkgs, lib, ... }:
+let
+  fromGitHub = repo: ref: rev: pkgs.vimUtils.buildVimPlugin {
+    pname = "${lib.strings.sanitizeDerivationName repo}";
+    version = ref;
+    src = builtins.fetchGit {
+      url = "https://github.com/${repo}.git";
+      ref = ref;
+      rev = rev;
+    };
+  };
+in
+{
+  home.file.".config/nvim" = {
+    source = ./config/neovim;
+    recursive = true;
+  };
+
+  programs.neovim = {
+    enable = true;
+    viAlias = true;
+    vimAlias = true;
+    defaultEditor = true;
+
+    plugins = with pkgs.vimPlugins; [
+      nvim-treesitter
+      surround-nvim
+      telescope-nvim
+      plenary-nvim # dependency of telescope
+      rnvimr
+      (fromGitHub "decaycs/decay.nvim" "HEAD" "457014541ebcfb29bd660592a0b02f22c9e2d0e2")
+      auto-session
+    ];
+
+    extraPackages = with pkgs; [
+      gcc # For treesitter complation
+      ripgrep # Search support
+      wayclip # Clipboard support
+      fd # finder for telescope
+    ];
+  };
+}