From e3bf9306c4733f49a5ab9ba0a52555b60c0eb6d5 Mon Sep 17 00:00:00 2001
From: Felix Albrigtsen <felix@albrigtsen.it>
Date: Thu, 28 Dec 2023 16:23:44 +0100
Subject: [PATCH] neovim: add peristant undo file

---
 home/neovim.nix | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/home/neovim.nix b/home/neovim.nix
index 61cbb19..fbfae80 100644
--- a/home/neovim.nix
+++ b/home/neovim.nix
@@ -1,5 +1,7 @@
 { pkgs, lib, inputs, config, ...}:
-{
+let
+  undoDir = "${config.home.homeDirectory}/.vim/undo";
+in {
   programs.neovim = {
     enable = true;
     defaultEditor = true;
@@ -41,6 +43,11 @@
       set tabstop=2
       set expandtab
 
+      set undofile
+      set undodir=${undoDir}
+      set undolevels=1000
+      set undoreload=10000
+
       " Integrate status with lightline
       let g:lightline = {
         \   'active': {
@@ -117,4 +124,7 @@
       map <Leader><Space> :noh<CR>
     '';
   };
+
+  # Create undo directory
+  home.activation.vimUndoDir = lib.hm.dag.entryAfter ["writeBoundary"] "mkdir -p ${undoDir}";
 }