feat(nix): nix and back again

I tried Nix, but it had too many downsides so I removed it.

1. Didn't like that all files are immutable and simple config changes
need a complete rebuild.
2. Setting up a new Mac didn't work as smoothly as promised. Not worth
the effort.
3. It sucked a lot to always have to type in the password twice on each
darwin-rebuild
4. It solves problems I never had.

.config/nvim/lua/config/autocmds.lua

@@ -0,0 +1,55 @@
+-- Autocmds are automatically loaded on the VeryLazy event
+-- Default autocmds that are always set: https://github.com/LazyVim/LazyVim/blob/main/lua/lazyvim/config/autocmds.lua
+-- Add any additional autocmds here
+
+-- Reload tmux config on save
+vim.api.nvim_create_autocmd("BufWritePost", {
+  pattern = { "*tmux.conf" },
+  command = "execute 'silent !tmux source <afile> --silent'",
+})
+
+-- Reload gitmux config on save
+vim.api.nvim_create_autocmd({ "BufRead" }, {
+  pattern = { "gitmux.conf" },
+  callback = function()
+    vim.cmd([[set filetype=sh]])
+  end,
+})
+
+-- Restart yabai on config save
+vim.api.nvim_create_autocmd("BufWritePost", {
+  pattern = { ".yabairc" },
+  command = "!yabai --restart-service",
+})
+
+-- Add specific settings for Markdown files
+vim.api.nvim_create_autocmd({ "BufNewFile", "BufFilePre", "BufRead" }, {
+  pattern = { "*.mdx", "*.md" },
+  callback = function()
+    vim.cmd([[set wrap linebreak nolist]])
+    vim.cmd([[SoftWrapMode]])
+  end,
+})
+
+-- Evenly resize windows after resizing
+vim.api.nvim_create_autocmd({ "VimResized" }, {
+  pattern = { "*" },
+  callback = function()
+    vim.cmd([[tabdo wincmd =]])
+  end,
+})
+
+-- Turn off paste mode when leaving insert mode
+vim.api.nvim_create_autocmd("InsertLeave", {
+  pattern = { "*" },
+  command = "set nopaste",
+})
+
+-- Change conceallevel for JSON files
+vim.api.nvim_create_autocmd("FileType", {
+  pattern = { "json", "jsonc" },
+  callback = function()
+    vim.wo.spell = false
+    vim.wo.conceallevel = 0
+  end,
+})