diff --git a/.gitignore b/.gitignore
index dabbdbc..6108db7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,18 +1,4 @@
-/*
+/secrets.nix
 
-!/.gitignore
-!/*.example.nix
-
-!/notes
-
-!/programs
-!/scripts
-
-!/system
-!/home
-
-!/wallpapers
-/wallpapers/*
-!/wallpapers/*.png
-!/wallpapers/build.sh
+/wallpapers/*.jpg
 
diff --git a/home/home.nix b/home/home.nix
index 1e4a18b..6754ae0 100644
--- a/home/home.nix
+++ b/home/home.nix
@@ -17,7 +17,7 @@ in
     model = "pc105";
     layout = "us,ru";
     variant = "dvorak,";
-    options = ["grp:win_space_toggle"];
+    options = [ "grp:win_space_toggle" ];
   };
 
   home.packages = with pkgs; [
@@ -25,25 +25,25 @@ in
     docker-compose
     libreoffice
 
-    asciinema       # record the terminal
-    neofetch        # command-line system information
+    asciinema # record the terminal
+    neofetch # command-line system information
     alacritty
 
     # tools
-    xh              # friendly and fast tool for sending HTTP requests
-    fd              # a simple, fast and user-friendly alternative to find
-    bat             # a cat clone with syntax highlighting and git integration
+    xh # friendly and fast tool for sending HTTP requests
+    fd # a simple, fast and user-friendly alternative to find
+    bat # a cat clone with syntax highlighting and git integration
 
     # haskell
     stylish-haskell # formatter
 
     # browser
-    librewolf       # a fork of firefox, focused on privacy, security and freedom
+    librewolf # a fork of firefox, focused on privacy, security and freedom
 
     # for work
     google-cloud-sdk
     kubectl
-    postgresql_12   # 🤷 I need only psql
+    postgresql_12 # 🤷 I need only psql
   ];
 
   # user interface
diff --git a/home/progs/alacritty/config.nix b/home/progs/alacritty/config.nix
index 7873324..3ec1a01 100644
--- a/home/progs/alacritty/config.nix
+++ b/home/progs/alacritty/config.nix
@@ -18,10 +18,11 @@
     multiplier = 3;
   };
 
-  font = 
+  font =
     let
       family = "Fira Code";
-    in {
+    in
+    {
       normal = {
         inherit family;
         style = "Regular";
@@ -40,5 +41,5 @@
       };
 
       size = 11.0;
-  };
+    };
 }
diff --git a/home/progs/alacritty/default.nix b/home/progs/alacritty/default.nix
index 541b7e3..a0a3342 100644
--- a/home/progs/alacritty/default.nix
+++ b/home/progs/alacritty/default.nix
@@ -15,7 +15,7 @@ in
       description = "Enable alacritty, GPU-accelerated terminal emulator";
     };
   };
-  
+
   config = mkIf cfg.enable {
     programs.alacritty = {
       enable = true;
diff --git a/home/progs/exa.nix b/home/progs/exa.nix
index 8a499eb..12d64a0 100644
--- a/home/progs/exa.nix
+++ b/home/progs/exa.nix
@@ -14,7 +14,7 @@ in
       description = "Add and configure exa, a modern replacement for ls";
     };
   };
-  
+
   config = mkIf cfg.enable {
     programs.exa.enable = true;
 
diff --git a/home/progs/git.nix b/home/progs/git.nix
index d0153c7..076d279 100644
--- a/home/progs/git.nix
+++ b/home/progs/git.nix
@@ -12,7 +12,7 @@ in
       default = false;
       description = "Add git with my personal settings";
     };
-    
+
     userName = mkOption {
       type = types.str;
       description = "Set your global name";
@@ -29,7 +29,7 @@ in
       description = "The default GnuPG signing key fingerprint";
     };
   };
-  
+
   config = mkIf cfg.enable {
     programs.git = {
       enable = true;
diff --git a/home/progs/himalaya.nix b/home/progs/himalaya.nix
index 8e18f12..f3ea8b4 100644
--- a/home/progs/himalaya.nix
+++ b/home/progs/himalaya.nix
@@ -23,7 +23,7 @@ in
       description = "Add himalaya with my personal configuration";
     };
   };
-  
+
   config = mkIf cfg.enable {
     programs.himalaya = {
       enable = true;
diff --git a/home/progs/hledger.nix b/home/progs/hledger.nix
index a2ecbe4..9d88e19 100644
--- a/home/progs/hledger.nix
+++ b/home/progs/hledger.nix
@@ -21,7 +21,7 @@ in
       description = "Add and configure hledger tool to manage finance";
     };
   };
-  
+
   config = mkIf cfg.enable {
     home.packages = with pkgs; [
       hledger
diff --git a/home/progs/nvim/coc_settings.nix b/home/progs/nvim/coc_settings.nix
index d9b2226..a2e5082 100644
--- a/home/progs/nvim/coc_settings.nix
+++ b/home/progs/nvim/coc_settings.nix
@@ -11,12 +11,12 @@
   languageserver = {
     nix = {
       command = "rnix-lsp";
-      filetypes = ["nix"];
+      filetypes = [ "nix" ];
     };
 
     haskell = {
       command = "haskell-language-server-wrapper";
-      args = ["--lsp"];
+      args = [ "--lsp" ];
       rootPatterns = [
         "stack.yaml"
         ".cabal"
diff --git a/home/progs/nvim/default.nix b/home/progs/nvim/default.nix
index ac38e40..1fd7c32 100644
--- a/home/progs/nvim/default.nix
+++ b/home/progs/nvim/default.nix
@@ -12,31 +12,30 @@ let
   plugins = pkgs.vimPlugins // customPlugins;
 
   myVimPlugins = with plugins; [
-    coc-tsserver          # typescript LSP
-    coc-eslint            # eslint LSP
-    coc-rust-analyzer     # rust LSP
+    coc-tsserver # typescript LSP
+    coc-eslint # eslint LSP
+    coc-rust-analyzer # rust LSP
 
-    editorconfig-vim      # use project .editorconfig to configure editor
-    lightline-vim         # configurable status line
-    material-vim          # modern theme with true colors support
-    vim-nix               # nix support
-    vim-easymotion        # highlights keys to move quickly
-    vim-gitgutter         # shows git diff markers in the sign column
-    nerdtree              # tree explorer
-    nerdtree-git-plugin   # shows files git status on the NerdTree
-    neoformat             # formating code
-    nvim-treesitter       # treesitter configurations and abstraction layer
-    fzf-vim               # fuzzy finder
-    blamer-nvim           # A git blame plugin
+    editorconfig-vim # use project .editorconfig to configure editor
+    lightline-vim # configurable status line
+    material-vim # modern theme with true colors support
+    vim-nix # nix support
+    vim-easymotion # highlights keys to move quickly
+    vim-gitgutter # shows git diff markers in the sign column
+    nerdtree # tree explorer
+    nerdtree-git-plugin # shows files git status on the NerdTree
+    neoformat # formating code
+    nvim-treesitter # treesitter configurations and abstraction layer
+    fzf-vim # fuzzy finder
+    blamer-nvim # A git blame plugin
   ];
 
   # Additional language servers that we should install mannually
   lspPackages = with pkgs; [ rnix-lsp ];
   # Additional tools
-  toolsPackages = with pkgs; [
-    fzf ripgrep           # required for `fzf-vim` plugin
-  ];
-  additionalPackages = lspPackages ++ toolsPackages;
+  fzfToolsPackages = with pkgs; [ fzf ripgrep ];
+
+  additionalPackages = lspPackages ++ fzfToolsPackages;
 
   vimConfig = builtins.readFile ./config.vim;
 in
@@ -54,10 +53,10 @@ in
       description = "Set neovim as default editor";
     };
   };
-  
+
   config = mkIf cfg.enable {
     home.packages = additionalPackages;
-      
+
     programs.neovim = {
       enable = true;
       extraConfig = vimConfig;
@@ -79,4 +78,3 @@ in
     };
   };
 }
-
diff --git a/home/progs/nvim/lua/basic.lua b/home/progs/nvim/lua/basic.lua
index 113e16c..c348629 100644
--- a/home/progs/nvim/lua/basic.lua
+++ b/home/progs/nvim/lua/basic.lua
@@ -3,15 +3,15 @@
 -- Basic Settings
 --
 
-vim.cmd 'filetype off'
+vim.cmd("filetype off")
 
 -- Leaders
-vim.g.mapleader = ','
-vim.g.maplocalleader = '-'
+vim.g.mapleader = ","
+vim.g.maplocalleader = "-"
 
 -- Better Unix support
-vim.opt.viewoptions = {'folds', 'options', 'cursor', 'unix', 'slash'}
-vim.opt.encoding = 'utf-8'
+vim.opt.viewoptions = { "folds", "options", "cursor", "unix", "slash" }
+vim.opt.encoding = "utf-8"
 
 -- True color support
 vim.opt.termguicolors = true
@@ -20,13 +20,13 @@ vim.opt.termguicolors = true
 -- Available styles: default, planight, ocean, lighter
 -- darker, default-community, palenight-community, ocean-community,
 -- lighter-community, darker-community
-vim.g.material_theme_style = 'default'
-vim.g.lightline = { colorscheme = 'material_vim' }
-vim.cmd 'colorscheme material'
+vim.g.material_theme_style = "default"
+vim.g.lightline = { colorscheme = "material_vim" }
+vim.cmd("colorscheme material")
 
 -- Other options
-vim.cmd 'syntax on'
-vim.opt.backspace = {'indent', 'eol', 'start'}
+vim.cmd("syntax on")
+vim.opt.backspace = { "indent", "eol", "start" }
 vim.opt.laststatus = 2
 vim.opt.showmode = false
 
@@ -37,13 +37,13 @@ vim.opt.softtabstop = 2
 vim.opt.shiftwidth = 2
 
 -- Fixes broken cursor on Linux
-vim.opt.guicursor = ''
+vim.opt.guicursor = ""
 
 -- Disable mouse / touchpad
-vim.opt.mouse = ''
+vim.opt.mouse = ""
 
 -- Incremental substitutin
-vim.opt.inccommand = 'split'
+vim.opt.inccommand = "split"
 
 -------------------------------------------------------------------------------
 --
@@ -67,17 +67,17 @@ vim.opt.showmatch = true
 -- Time during which the matching parenthesis is shown.
 vim.opt.matchtime = 2
 -- Sensible default line auto cutting and formatting.
-vim.opt.formatoptions = 'jtcrq'
+vim.opt.formatoptions = "jtcrq"
 -- Copy/Past to/from clipboard.
-vim.opt.clipboard = 'unnamedplus'
+vim.opt.clipboard = "unnamedplus"
 -- Highlight line cursor is currently on.
 vim.opt.cursorline = true
 -- Invisible characters representation when :set list
 vim.opt.listchars = {
-  tab = '→ ',
-  trail = '~',
-  nbsp = '␣',
-  eol = '¬',
+	tab = "→ ",
+	trail = "~",
+	nbsp = "␣",
+	eol = "¬",
 }
 
 -- Search
@@ -89,7 +89,7 @@ vim.opt.ignorecase = true
 vim.opt.smartcase = true
 
 -- Spell
-vim.opt.spelllang = 'en,ru'
+vim.opt.spelllang = "en,ru"
 
 -- Fold level
 vim.opt.foldlevel = 99
@@ -101,105 +101,110 @@ vim.opt.foldnestmax = 5
 --
 -- File type specified
 --
-local bufReadFile = {'BufNewFile', 'BufRead'}
+local bufReadFile = { "BufNewFile", "BufRead" }
 
 -- Set up a line limiter for each lang
-local line_limiter_augroup = vim.api.nvim_create_augroup('line_limiter', {})
+local line_limiter_augroup = vim.api.nvim_create_augroup("line_limiter", {})
 local function set_line_limiter(limit, patterns)
-  vim.api.nvim_create_autocmd(bufReadFile, {
-    pattern = patterns,
-    group = line_limiter_augroup,
-    callback = function () vim.wo.colorcolumn = tostring(limit) end,
-  })
+	vim.api.nvim_create_autocmd(bufReadFile, {
+		pattern = patterns,
+		group = line_limiter_augroup,
+		callback = function()
+			vim.wo.colorcolumn = tostring(limit)
+		end,
+	})
 end
 
 set_line_limiter(101, {
-  '*.nix',
-  '*.vim',
-  '*.lua',
-  '*.ts',
-  '*.tsx',
-  '*.js',
-  '*.jsx',
-  '*.rs',
+	"*.nix",
+	"*.vim",
+	"*.lua",
+	"*.ts",
+	"*.tsx",
+	"*.js",
+	"*.jsx",
+	"*.rs",
 })
 set_line_limiter(81, {
-  '*.json',
-  '*.yml',
-  '*.yaml',
-  '*.md',
-  '*.html',
-  '*.css',
+	"*.json",
+	"*.yml",
+	"*.yaml",
+	"*.md",
+	"*.html",
+	"*.css",
 })
 
 -- Spell check for markdown files
-local spell_check_augroup = vim.api.nvim_create_augroup('spell_check', {})
+local spell_check_augroup = vim.api.nvim_create_augroup("spell_check", {})
 vim.api.nvim_create_autocmd(bufReadFile, {
-  pattern = { '*.md' },
-  group = spell_check_augroup,
-  callback = function () vim.wo.spell = true end,
+	pattern = { "*.md" },
+	group = spell_check_augroup,
+	callback = function()
+		vim.wo.spell = true
+	end,
 })
 
 -- Set up fold method for each lang
-local folding_augroup = vim.api.nvim_create_augroup('folding', {})
+local folding_augroup = vim.api.nvim_create_augroup("folding", {})
 vim.api.nvim_create_autocmd(bufReadFile, {
-  group = folding_augroup,
-  pattern = {
-    '*.js',
-    '*.jsx',
-    '*.ts',
-    '*.tsx',
-  },
-  callback = function ()
-    vim.cmd 'syntax on'
-    vim.wo.foldmethod = 'syntax'
-  end,
+	group = folding_augroup,
+	pattern = {
+		"*.js",
+		"*.jsx",
+		"*.ts",
+		"*.tsx",
+	},
+	callback = function()
+		vim.cmd("syntax on")
+		vim.wo.foldmethod = "syntax"
+	end,
 })
 
-
 -------------------------------------------------------------------------------
 --
 -- Bindings
 --
-local function clear_search_hl() vim.opt.hlsearch = false end
-vim.keymap.set('n', '<C-z>', clear_search_hl, { desc = 'Clear search highlighting' })
+local function clear_search_hl()
+	vim.opt.hlsearch = false
+end
+vim.keymap.set("n", "<C-z>", clear_search_hl, { desc = "Clear search highlighting" })
 
 -- Enable fast navigation between windows
-vim.keymap.set('n', '<C-h>', '<C-W>h')
-vim.keymap.set('n', '<C-l>', '<C-W>l')
-vim.keymap.set('n', '<C-j>', '<C-W>j')
-vim.keymap.set('n', '<C-k>', '<C-W>k')
+vim.keymap.set("n", "<C-h>", "<C-W>h")
+vim.keymap.set("n", "<C-l>", "<C-W>l")
+vim.keymap.set("n", "<C-j>", "<C-W>j")
+vim.keymap.set("n", "<C-k>", "<C-W>k")
 
 -- Disable the annoying and useless ex-mode
-vim.keymap.set('n', 'Q', '<nop>')
-vim.keymap.set('n', 'gQ', '<nop>')
+vim.keymap.set("n", "Q", "<nop>")
+vim.keymap.set("n", "gQ", "<nop>")
 
 -- Disable arrow keys
-vim.keymap.set('n', '<Up>', '<nop>')
-vim.keymap.set('n', '<Down>', '<nop>')
-vim.keymap.set('n', '<Left>', '<nop>')
-vim.keymap.set('n', '<Right>', '<nop>')
-vim.keymap.set('v', '<Up>', '<nop>')
-vim.keymap.set('v', '<Down>', '<nop>')
-vim.keymap.set('v', '<Left>', '<nop>')
-vim.keymap.set('v', '<Right>', '<nop>')
+vim.keymap.set("n", "<Up>", "<nop>")
+vim.keymap.set("n", "<Down>", "<nop>")
+vim.keymap.set("n", "<Left>", "<nop>")
+vim.keymap.set("n", "<Right>", "<nop>")
+vim.keymap.set("v", "<Up>", "<nop>")
+vim.keymap.set("v", "<Down>", "<nop>")
+vim.keymap.set("v", "<Left>", "<nop>")
+vim.keymap.set("v", "<Right>", "<nop>")
 -- ... instead of insert mode for rus lang
-vim.keymap.set('i', '<Up>', '<nop>')
-vim.keymap.set('i', '<Down>', '<nop>')
-vim.keymap.set('i', '<Left>', '<nop>')
-vim.keymap.set('i', '<Right>', '<nop>')
+vim.keymap.set("i", "<Up>", "<nop>")
+vim.keymap.set("i", "<Down>", "<nop>")
+vim.keymap.set("i", "<Left>", "<nop>")
+vim.keymap.set("i", "<Right>", "<nop>")
 
 -- Disable page up / down
-vim.keymap.set('n', '<PageUp>', '<nop>')
-vim.keymap.set('n', '<PageDown>', '<nop>')
-vim.keymap.set('v', '<PageUp>', '<nop>')
-vim.keymap.set('v', '<PageDown>', '<nop>')
-vim.keymap.set('i', '<PageUp>', '<nop>')
-vim.keymap.set('i', '<PageDown>', '<nop>')
+vim.keymap.set("n", "<PageUp>", "<nop>")
+vim.keymap.set("n", "<PageDown>", "<nop>")
+vim.keymap.set("v", "<PageUp>", "<nop>")
+vim.keymap.set("v", "<PageDown>", "<nop>")
+vim.keymap.set("i", "<PageUp>", "<nop>")
+vim.keymap.set("i", "<PageDown>", "<nop>")
 
 -------------------------------------------------------------------------------
 --
 -- Abbreviatures
 --
-vim.cmd 'cabbrev bsp belowright split'
-vim.cmd 'cabbrev rvsp belowright vsplit'
+vim.cmd("cabbrev bsp belowright split")
+vim.cmd("cabbrev rvsp belowright vsplit")
diff --git a/home/progs/nvim/lua/coc.lua b/home/progs/nvim/lua/coc.lua
index e497bfa..23368b1 100644
--- a/home/progs/nvim/lua/coc.lua
+++ b/home/progs/nvim/lua/coc.lua
@@ -4,10 +4,10 @@ vim.opt.updatetime = 300
 -- Coc don't use completeopt
 vim.opt.completeopt = {}
 -- don't give |ins-completion-menu| messages.
-vim.opt.shortmess:append('c')
+vim.opt.shortmess:append("c")
 
 -- always show signcolumns
-vim.opt.signcolumn = 'yes'
+vim.opt.signcolumn = "yes"
 
 -- Some server have issues with backup files, see coc#649
 vim.opt.backup = false
@@ -17,42 +17,42 @@ vim.opt.writebackup = false
 vim.opt.cmdheight = 2
 
 -- Use <c-space> for trigger completion.
-vim.keymap.set('i', '<C-space>', vim.fn['coc#refresh'], {
-  silent = true,
-  expr = true
+vim.keymap.set("i", "<C-space>", vim.fn["coc#refresh"], {
+	silent = true,
+	expr = true,
 })
 
 -- Use <cr> for confirm completion, `<C-g>u` means break undo chain at current
 -- position. Coc only does snippet and additional edit on confirm.
 local function confirm_coc_completion()
-  if vim.call'coc#pum#visible' == 1 then
-    vim.call'coc#pum#confirm'
-    return ""
-  else 
-    return "<CR>"
-  end
+	if vim.call("coc#pum#visible") == 1 then
+		vim.call("coc#pum#confirm")
+		return ""
+	else
+		return "<CR>"
+	end
 end
-vim.keymap.set('i', '<CR>', confirm_coc_completion, { expr = true, silent = true })
+vim.keymap.set("i", "<CR>", confirm_coc_completion, { expr = true, silent = true })
 
 local sr_opts = { silent = true, remap = true }
 -- Use `[c` and `]c` for navigate diagnostics
-vim.keymap.set('n', '[c', '<Plug>(coc-diagnostic-prev)', sr_opts)
-vim.keymap.set('n', ']c', '<Plug>(coc-diagnostic-next)', sr_opts)
+vim.keymap.set("n", "[c", "<Plug>(coc-diagnostic-prev)", sr_opts)
+vim.keymap.set("n", "]c", "<Plug>(coc-diagnostic-next)", sr_opts)
 
 -- Remap keys for gotos
-vim.keymap.set('n', 'gd', '<Plug>(coc-definition)', sr_opts)
-vim.keymap.set('n', 'gy', '<Plug>(coc-type-definition)', sr_opts)
-vim.keymap.set('n', 'gi', '<Plug>(coc-implementation)', sr_opts)
-vim.keymap.set('n', 'gr', '<Plug>(coc-references)', sr_opts)
+vim.keymap.set("n", "gd", "<Plug>(coc-definition)", sr_opts)
+vim.keymap.set("n", "gy", "<Plug>(coc-type-definition)", sr_opts)
+vim.keymap.set("n", "gi", "<Plug>(coc-implementation)", sr_opts)
+vim.keymap.set("n", "gr", "<Plug>(coc-references)", sr_opts)
 
 -- Remap for do code action of current line
-vim.keymap.set('n', '<localleader>a', '<Plug>(coc-codeaction)')
+vim.keymap.set("n", "<localleader>a", "<Plug>(coc-codeaction)")
 -- Remap for rename current word
-vim.keymap.set('n', '<localleader>n', '<Plug>(coc-rename)')
+vim.keymap.set("n", "<localleader>n", "<Plug>(coc-rename)")
 
 -- Mapping for CocList
-vim.keymap.set('n', '<localleader>cl', ':CocList<CR>')
-vim.keymap.set('n', '<localleader>cd', ':CocList diagnostics<CR>')
-vim.keymap.set('n', '<localleader>cc', ':CocList commands<CR>')
-vim.keymap.set('n', '<localleader>co', ':CocList outline<CR>')
-vim.keymap.set('n', '<localleader>cs', ':CocList symbols<CR>')
+vim.keymap.set("n", "<localleader>cl", ":CocList<CR>")
+vim.keymap.set("n", "<localleader>cd", ":CocList diagnostics<CR>")
+vim.keymap.set("n", "<localleader>cc", ":CocList commands<CR>")
+vim.keymap.set("n", "<localleader>co", ":CocList outline<CR>")
+vim.keymap.set("n", "<localleader>cs", ":CocList symbols<CR>")
diff --git a/home/progs/nvim/lua/plugins.lua b/home/progs/nvim/lua/plugins.lua
index 3362405..690b3f0 100644
--- a/home/progs/nvim/lua/plugins.lua
+++ b/home/progs/nvim/lua/plugins.lua
@@ -3,27 +3,27 @@
 -- NerdTree
 --
 
-vim.g.NERDTreeDirArrowExpandable = '▸'
-vim.g.NERDTreeDirArrowCollapsible = '▾'
+vim.g.NERDTreeDirArrowExpandable = "▸"
+vim.g.NERDTreeDirArrowCollapsible = "▾"
 
 vim.g.NERDTreeMiniamlUI = 1
 vim.g.NERDTreeDirArrows = 1
 
 -- Nerdtree git plugin symbols
 vim.g.NERDTreeGitStatusIndicatorMapCustom = {
-  Modified  = 'ᵐ',
-  Staged    = 'ˢ',
-  Untracked = 'ᵘ',
-  Renamed   = 'ʳ',
-  Unmerged  = 'ᶴ',
-  Deleted   = 'ˣ',
-  Dirty     = '˜',
-  Clean     = 'ᵅ',
-  Unknown   = '?',
+	Modified = "ᵐ",
+	Staged = "ˢ",
+	Untracked = "ᵘ",
+	Renamed = "ʳ",
+	Unmerged = "ᶴ",
+	Deleted = "ˣ",
+	Dirty = "˜",
+	Clean = "ᵅ",
+	Unknown = "?",
 }
 
-vim.keymap.set('n', '<leader>nt', ':NERDTreeToggle<CR>')
-vim.keymap.set('n', '<leader>nf', ':NERDTreeFind<CR>')
+vim.keymap.set("n", "<leader>nt", ":NERDTreeToggle<CR>")
+vim.keymap.set("n", "<leader>nf", ":NERDTreeFind<CR>")
 
 -------------------------------------------------------------------------------
 --
@@ -31,14 +31,14 @@ vim.keymap.set('n', '<leader>nf', ':NERDTreeFind<CR>')
 --
 vim.g.neoformat_try_node_exe = 1
 vim.g.neoformat_only_msg_on_error = 1
-vim.g.neoformat_enabled_markdown = {"denofmt"}
+vim.g.neoformat_enabled_markdown = { "denofmt" }
 
-vim.cmd [[
+vim.cmd([[
 aug fmt
   au!
   au BufWritePre * try | undojoin | Neoformat | catch /E790/ | Neoformat | endtry
 aug END
-]]
+]])
 --[[ TODO: need to investigate how implement it in lua
 local format_augroup = vim.api.nvim_create_augroup('format', {})
 vim.api.nvim_create_autocmd('BufWritePre', {
@@ -53,7 +53,8 @@ vim.api.nvim_create_autocmd('BufWritePre', {
     if not ok then vim.cmd'NeoFormat' end
   end
 })
-]]--
+]]
+--
 
 -------------------------------------------------------------------------------
 --
@@ -63,30 +64,29 @@ vim.g.gitgutter_sign_priority = 1
 vim.g.gitgutter_set_sign_backgrounds = 0
 vim.g.gitgutter_map_keys = 0
 
-vim.keymap.set('n', '<leader>ghp', ':GitGutterPreviewHunk<CR>')
-
+vim.keymap.set("n", "<leader>ghp", ":GitGutterPreviewHunk<CR>")
 
 -------------------------------------------------------------------------------
 --
 -- TreeSitter
 --
-require'nvim-treesitter.configs'.setup {
-  -- A list of parser names, or "all"
-  ensure_installed = {
-    "typescript",
-    "tsx",
-    "rust",
-    "haskell",
-  },
+require("nvim-treesitter.configs").setup({
+	-- A list of parser names, or "all"
+	ensure_installed = {
+		"typescript",
+		"tsx",
+		"rust",
+		"haskell",
+	},
 
-  -- Install parsers synchronously (only applied to `ensure_installed`)
-  sync_install = false,
+	-- Install parsers synchronously (only applied to `ensure_installed`)
+	sync_install = false,
 
-  highlight = {
-    enable = true,
-  },
+	highlight = {
+		enable = true,
+	},
 
-  indent = {
-    enable = true,
-  },
-}
+	indent = {
+		enable = true,
+	},
+})
diff --git a/home/progs/nvim/nvim_nightly.nix b/home/progs/nvim/nvim_nightly.nix
index 1c3ec6d..d41ee69 100644
--- a/home/progs/nvim/nvim_nightly.nix
+++ b/home/progs/nvim/nvim_nightly.nix
@@ -2,13 +2,13 @@
 
 pkgs.neovim-unwrapped.overrideAttrs (
   old: {
-    name    = "neovim-nightly";
+    name = "neovim-nightly";
     version = "nightly";
 
     src = pkgs.fetchFromGitHub {
-      owner  = "neovim";
-      repo   = "neovim";
-      rev    = "f17d88c47a6a647f2230a61e7cd952926abc4473";
+      owner = "neovim";
+      repo = "neovim";
+      rev = "f17d88c47a6a647f2230a61e7cd952926abc4473";
       sha256 = "0lgbf90sbachdag1zm9pmnlbn35964l3khs27qy4462qzpqyi9fi";
     };
 
diff --git a/home/progs/pass.nix b/home/progs/pass.nix
index 9b98a28..9fc5889 100644
--- a/home/progs/pass.nix
+++ b/home/progs/pass.nix
@@ -14,9 +14,9 @@ in
       description = "Add and configure pass tool to manager your passwords";
     };
   };
-  
+
   config = mkIf cfg.enable {
-    home.packages = [pkgs.pass];
+    home.packages = [ pkgs.pass ];
 
     home.sessionVariables = {
       PASSWORD_STORE_DIR = "${pass_data_dir}/store";
diff --git a/home/progs/vifm/default.nix b/home/progs/vifm/default.nix
index 1cf1a7d..14c2ef3 100644
--- a/home/progs/vifm/default.nix
+++ b/home/progs/vifm/default.nix
@@ -13,13 +13,13 @@ in
       description = "Add and configure vifm, a vi-like file manager";
     };
   };
-  
+
   config = mkIf cfg.enable {
     home.packages = with pkgs; [
-      vifm      # a vi-like file manager
+      vifm # a vi-like file manager
     ];
-      
-    
+
+
     xdg.configFile = {
       "vifm/vifmrc".source = ./vifmrc;
     };
diff --git a/home/progs/zoxide.nix b/home/progs/zoxide.nix
index 50fe219..046bed9 100644
--- a/home/progs/zoxide.nix
+++ b/home/progs/zoxide.nix
@@ -13,7 +13,7 @@ in
       description = "Add zoxide, a modern replacement for cd";
     };
   };
-  
+
   config = mkIf cfg.enable {
     programs.zoxide = {
       enable = true;
diff --git a/home/shell/prompt/starship/default.nix b/home/shell/prompt/starship/default.nix
index 32afcb3..d05bd7c 100644
--- a/home/shell/prompt/starship/default.nix
+++ b/home/shell/prompt/starship/default.nix
@@ -17,7 +17,7 @@ in
       description = "Enable starship cross-shell prompt";
     };
   };
-  
+
   config = mkIf cfg.enable {
     programs.starship = {
       enable = true;
diff --git a/home/shell/zsh.nix b/home/shell/zsh.nix
index a27e111..90f23ac 100644
--- a/home/shell/zsh.nix
+++ b/home/shell/zsh.nix
@@ -13,7 +13,7 @@ in
       description = "Add z shell";
     };
   };
-  
+
   config = mkIf cfg.enable {
     # fish and zsh support fo nix-shell
     home.packages = with pkgs; [ any-nix-shell ];
diff --git a/home/ui/betterlockscreen.nix b/home/ui/betterlockscreen.nix
index 5e488d0..58488ac 100644
--- a/home/ui/betterlockscreen.nix
+++ b/home/ui/betterlockscreen.nix
@@ -1,4 +1,4 @@
-{ lib, config, pkgs, ...}:
+{ lib, config, pkgs, ... }:
 
 with lib;
 
@@ -16,7 +16,7 @@ in
     };
   };
 
- 
+
   config = mkIf cfg.enable {
     services.betterlockscreen = {
       enable = true;
@@ -35,7 +35,7 @@ in
         OnBootSec = "10s";
       };
 
-      Install = { 
+      Install = {
         WantedBy = [ "graphical-session.target" "timers.target" ];
       };
     };
@@ -52,7 +52,7 @@ in
         ExecStart = "${package}/bin/betterlockscreen --update ${config.home.homeDirectory}/pictures/wallpapers";
       };
 
-      Install = { 
+      Install = {
         WantedBy = [ "graphical-session.target" ];
       };
     };
diff --git a/home/ui/polybar/default.nix b/home/ui/polybar/default.nix
index cad76ea..25f81f8 100644
--- a/home/ui/polybar/default.nix
+++ b/home/ui/polybar/default.nix
@@ -1,4 +1,4 @@
-{ lib, config, pkgs, ...}:
+{ lib, config, pkgs, ... }:
 
 with lib;
 
diff --git a/home/ui/xmonad/default.nix b/home/ui/xmonad/default.nix
index 3472cb9..b24c925 100644
--- a/home/ui/xmonad/default.nix
+++ b/home/ui/xmonad/default.nix
@@ -1,4 +1,4 @@
-{ lib, config, pkgs, ...}:
+{ lib, config, pkgs, ... }:
 
 with lib;
 
@@ -17,10 +17,10 @@ in
 
   config = mkIf cfg.enable {
     home.packages = with pkgs; [
-      xclip           # access x clipboard from a console
-      dmenu           # menu for x window system
-      flameshot       # powerful yet simple to use screenshot software
-      nitrogen        # wallpaper manager
+      xclip # access x clipboard from a console
+      dmenu # menu for x window system
+      flameshot # powerful yet simple to use screenshot software
+      nitrogen # wallpaper manager
     ];
 
     xsession = {
diff --git a/secrets.example.nix b/secrets.example.nix
index cc73963..02e3606 100644
--- a/secrets.example.nix
+++ b/secrets.example.nix
@@ -13,13 +13,13 @@
     userEmail = "bross@example.com";
     # gpg --list-secret-keys
     gpgSigningKey = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
-  };
+      };
 
-  emailAccounts = {
-    "personal" = {
-      flavor = "yandex.com";
-      address = "bross@yandex.ru";
-      passwordCommand = "pass show emails/bross@yandex.ru";
+    emailAccounts = {
+      "personal" = {
+        flavor = "yandex.com";
+        address = "bross@yandex.ru";
+        passwordCommand = "pass show emails/bross@yandex.ru";
+      };
     };
-  };
-}
+  }
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..9d94f72
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,8 @@
+{ pkgs ? import <nixpkgs> { } }:
+
+pkgs.mkShell {
+  nativeBuildInputs = with pkgs; [
+    nixpkgs-fmt
+    stylua
+  ];
+}
diff --git a/system/configuration.nix b/system/configuration.nix
index e0a325f..6af4467 100644
--- a/system/configuration.nix
+++ b/system/configuration.nix
@@ -44,7 +44,7 @@ in
     dbus = {
       enable = true;
       packages = [ pkgs.dconf ];
-    };    
+    };
 
     xserver = {
       enable = true;
@@ -84,7 +84,7 @@ in
       "wheel" # Enable ‘sudo’ for the user.
       "networkmanager"
       "docker"
-    ]; 
+    ];
     shell = pkgs.zsh;
   };
 
diff --git a/system/machine/home/default.nix b/system/machine/home/default.nix
index 5c3582d..13c06c3 100644
--- a/system/machine/home/default.nix
+++ b/system/machine/home/default.nix
@@ -5,7 +5,8 @@ let
 in
 {
   imports =
-    [ # Include the results of the hardware scan.
+    [
+      # Include the results of the hardware scan.
       ./hardware-configuration.nix
     ];
 
diff --git a/system/machine/home/hardware-configuration.nix b/system/machine/home/hardware-configuration.nix
index 9fd317e..2d6229f 100644
--- a/system/machine/home/hardware-configuration.nix
+++ b/system/machine/home/hardware-configuration.nix
@@ -5,7 +5,8 @@
 
 {
   imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "usbhid" "sd_mod" ];
@@ -14,18 +15,19 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/969c5f68-631d-4429-b81b-0d81e050449b";
+    {
+      device = "/dev/disk/by-uuid/969c5f68-631d-4429-b81b-0d81e050449b";
       fsType = "ext4";
     };
 
   fileSystems."/home" =
-    { device = "/dev/disk/by-uuid/e17fb0c0-9482-436d-83e8-3760772fe9b8";
+    {
+      device = "/dev/disk/by-uuid/e17fb0c0-9482-436d-83e8-3760772fe9b8";
       fsType = "ext4";
     };
 
   swapDevices =
-    [ { device = "/dev/disk/by-uuid/1be15503-cd51-4c57-bb91-04f45a964202"; }
-    ];
+    [{ device = "/dev/disk/by-uuid/1be15503-cd51-4c57-bb91-04f45a964202"; }];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's