vim: even better diffs

modules/base/vim.nix

@@ -75,7 +75,7 @@
 
           -- Better diffs
           vim.opt.diffopt:append({"linematch:60", "algorithm:patience"})
-          vim.opt.fillchars:append({ diff = " " })
+          vim.opt.fillchars:append({ diff = "╱" })
 
           -- Show search-replace preview live
           vim.opt.inccommand = "split"
@@ -658,6 +658,9 @@
             lua
             */
             ''
+              require("diffview").setup({
+                enhanced_diff_hl = true,
+              })
               vim.keymap.set("n", "<Leader>gd", vim.cmd.DiffviewOpen)
             '';
         }