From 27ceebaa91380d024e3fd7b4d3e24ef373e56010 Mon Sep 17 00:00:00 2001
From: Dmitry Voronin <account@voronind.com>
Date: Sat, 24 Feb 2024 22:00:47 +0300
Subject: [PATCH] Nvim : Move config to nix.

---
 .config/linux/system/flake.nix                |  1 +
 .config/linux/system/module/common/Nvim.nix   | 55 +++++++++++++++++
 .../linux/system/module/common/Package.nix    |  3 +-
 .../linux/system/module/common/Wallpaper.nix  |  4 +-
 .../module/common/nvim/config/Autoread.lua    |  5 ++
 .../system/module/common/nvim/config/Etc.lua  | 27 +++++++++
 .../module/common/nvim/config/Search.lua      |  5 ++
 .../system/module/common/nvim/config/Tab.lua  |  9 +++
 .../module/common/nvim/key/Autocomplete.lua   |  5 ++
 .../system/module/common/nvim/key/Buffer.lua  | 12 ++++
 .../system/module/common/nvim/key/Comment.lua |  5 ++
 .../system/module/common/nvim/key/Common.lua  | 22 +++++++
 .../module/common/nvim/key/Filetree.lua       |  2 +
 .../system/module/common/nvim/key/Fold.lua    |  5 ++
 .../module/common/nvim/key/Gitsigns.lua       |  2 +
 .../system/module/common/nvim}/key/Leader.lua |  2 -
 .../system/module/common/nvim/key/Lsp.lua     |  0
 .../module/common/nvim/key/Navigation.lua     | 23 +++++++
 .../system/module/common/nvim/key/Rekey.lua   | 49 +++++++++++++++
 .../system/module/common/nvim/key/Sort.lua    |  2 +
 .../module/common/nvim/key/Telescope.lua      |  6 ++
 .../module/common/nvim/key/Terminal.lua       |  5 ++
 .../system/module/common/nvim/key/Todo.lua    |  2 +
 .../system/module/common/nvim/key/Trouble.lua |  2 +
 .../system/module/common/nvim/key/Update.lua  |  5 ++
 .../module/common/nvim/key/Whichkey.lua       |  2 +
 .../module/common/nvim/plugin/Align.lua       |  7 +++
 .../module/common/nvim/plugin/Autoclose.lua   | 13 ++++
 .../module/common/nvim/plugin/Bufferline.lua  |  1 +
 .../common/nvim/plugin/Closebuffers.lua       |  7 +++
 .../module/common/nvim/plugin/Filetree.lua    | 36 +++++++++++
 .../system/module/common/nvim/plugin/Fold.lua |  3 +
 .../module/common/nvim/plugin/Gitsigns.lua    | 43 +++++++++++++
 .../module/common/nvim/plugin/Gruvbox.lua     |  1 +
 .../module/common/nvim/plugin/Indent.lua      |  6 ++
 .../system/module/common/nvim/plugin/Init.lua | 49 +++++++++++++++
 .../module/common/nvim/plugin/Lualine.lua     | 40 +++++++++++++
 .../module/common/nvim/plugin/Telescope.lua   | 11 ++++
 .../system/module/common/nvim/plugin/Todo.lua | 53 ++++++++++++++++
 .../module/common/nvim/plugin/Tokyonight.lua  | 23 +++++++
 .../module/common/nvim/plugin/Treesitter.lua  | 19 ++++++
 .../module/common/nvim/plugin/Trouble.lua     |  1 +
 .../module/common/nvim/plugin/lsp/Kotlin.lua  |  3 +
 .../module/common/nvim/plugin/lsp/Python.lua  |  3 +
 .../module/common/nvim/plugin/lsp/Rust.lua    | 16 +++++
 .../module/common/nvim/plugin/lsp/Tex.lua     | 60 +++++++++++++++++++
 46 files changed, 648 insertions(+), 7 deletions(-)
 create mode 100644 .config/linux/system/module/common/Nvim.nix
 create mode 100644 .config/linux/system/module/common/nvim/config/Autoread.lua
 create mode 100644 .config/linux/system/module/common/nvim/config/Etc.lua
 create mode 100644 .config/linux/system/module/common/nvim/config/Search.lua
 create mode 100644 .config/linux/system/module/common/nvim/config/Tab.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Autocomplete.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Buffer.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Comment.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Common.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Filetree.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Fold.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Gitsigns.lua
 rename .config/{nvim/lua => linux/system/module/common/nvim}/key/Leader.lua (86%)
 create mode 100644 .config/linux/system/module/common/nvim/key/Lsp.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Navigation.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Rekey.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Sort.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Telescope.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Terminal.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Todo.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Trouble.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Update.lua
 create mode 100644 .config/linux/system/module/common/nvim/key/Whichkey.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Align.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Autoclose.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Bufferline.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Closebuffers.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Filetree.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Fold.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Gitsigns.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Gruvbox.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Indent.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Init.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Lualine.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Telescope.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Todo.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Tokyonight.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Treesitter.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/Trouble.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/lsp/Kotlin.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/lsp/Python.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/lsp/Rust.lua
 create mode 100644 .config/linux/system/module/common/nvim/plugin/lsp/Tex.lua

diff --git a/.config/linux/system/flake.nix b/.config/linux/system/flake.nix
index 6f959f7..f0b567a 100644
--- a/.config/linux/system/flake.nix
+++ b/.config/linux/system/flake.nix
@@ -28,6 +28,7 @@
 			./module/common/Locale.nix
 			./module/common/Network.nix
 			./module/common/Nix.nix
+			./module/common/Nvim.nix
 			./module/common/Package.nix
 			./module/common/Root.nix
 			./module/common/Sshd.nix
diff --git a/.config/linux/system/module/common/Nvim.nix b/.config/linux/system/module/common/Nvim.nix
new file mode 100644
index 0000000..472ccd0
--- /dev/null
+++ b/.config/linux/system/module/common/Nvim.nix
@@ -0,0 +1,55 @@
+{ environment, ... }: let
+	nvimSrc = "/etc/nvim/";
+in {
+	environment.etc.nvim.source = ./nvim;
+
+	programs.neovim = {
+		enable   = true;
+		viAlias  = true;
+		vimAlias = true;
+		configure = {
+			customRC = ''
+				lua dofile("${nvimSrc}/plugin/Init.lua")
+				lua dofile("${nvimSrc}/plugin/Filetree.lua")
+				lua dofile("${nvimSrc}/plugin/lsp/Rust.lua")
+				lua dofile("${nvimSrc}/plugin/lsp/Tex.lua")
+				lua dofile("${nvimSrc}/plugin/Bufferline.lua")
+				lua dofile("${nvimSrc}/plugin/Lualine.lua")
+				lua dofile("${nvimSrc}/plugin/Autoclose.lua")
+				lua dofile("${nvimSrc}/plugin/Gitsigns.lua")
+				lua dofile("${nvimSrc}/plugin/Trouble.lua")
+				lua dofile("${nvimSrc}/plugin/Tokyonight.lua")
+				lua dofile("${nvimSrc}/plugin/Gruvbox.lua")
+				lua dofile("${nvimSrc}/plugin/Closebuffers.lua")
+				lua dofile("${nvimSrc}/plugin/Telescope.lua")
+				lua dofile("${nvimSrc}/plugin/Todo.lua")
+				lua dofile("${nvimSrc}/plugin/Indent.lua")
+				lua dofile("${nvimSrc}/plugin/Align.lua")
+				lua dofile("${nvimSrc}/plugin/Treesitter.lua")
+				lua dofile("${nvimSrc}/plugin/Fold.lua")
+				lua dofile("${nvimSrc}/config/Autoread.lua")
+				lua dofile("${nvimSrc}/config/Etc.lua")
+				lua dofile("${nvimSrc}/config/Search.lua")
+				lua dofile("${nvimSrc}/config/Tab.lua")
+				lua dofile("${nvimSrc}/key/Rekey.lua")
+				lua dofile("${nvimSrc}/key/Leader.lua")
+				lua dofile("${nvimSrc}/key/Autocomplete.lua")
+				lua dofile("${nvimSrc}/key/Buffer.lua")
+				lua dofile("${nvimSrc}/key/Comment.lua")
+				lua dofile("${nvimSrc}/key/Common.lua")
+				lua dofile("${nvimSrc}/key/Filetree.lua")
+				lua dofile("${nvimSrc}/key/Fold.lua")
+				lua dofile("${nvimSrc}/key/Gitsigns.lua")
+				lua dofile("${nvimSrc}/key/Lsp.lua")
+				lua dofile("${nvimSrc}/key/Navigation.lua")
+				lua dofile("${nvimSrc}/key/Sort.lua")
+				lua dofile("${nvimSrc}/key/Telescope.lua")
+				lua dofile("${nvimSrc}/key/Terminal.lua")
+				lua dofile("${nvimSrc}/key/Todo.lua")
+				lua dofile("${nvimSrc}/key/Trouble.lua")
+				lua dofile("${nvimSrc}/key/Update.lua")
+				lua dofile("${nvimSrc}/key/Whichkey.lua")
+			'';
+		};
+	};
+}
diff --git a/.config/linux/system/module/common/Package.nix b/.config/linux/system/module/common/Package.nix
index 3118d93..1563edf 100644
--- a/.config/linux/system/module/common/Package.nix
+++ b/.config/linux/system/module/common/Package.nix
@@ -39,6 +39,5 @@
 	];
 
 	# Special packages.
-	programs.adb.enable    = true;
-	programs.neovim.enable = true;
+	programs.adb.enable = true;
 }
diff --git a/.config/linux/system/module/common/Wallpaper.nix b/.config/linux/system/module/common/Wallpaper.nix
index b69338a..7ebfc0c 100644
--- a/.config/linux/system/module/common/Wallpaper.nix
+++ b/.config/linux/system/module/common/Wallpaper.nix
@@ -1,5 +1,3 @@
 { environment, ... }: {
-	environment.etc.wallpaper = {
-		source = ../../../wallpaper; # TODO: Use a path relative to repo.
-	};
+	environment.etc.wallpaper.source = ../../../wallpaper; # TODO: Use a path relative to repo.
 }
diff --git a/.config/linux/system/module/common/nvim/config/Autoread.lua b/.config/linux/system/module/common/nvim/config/Autoread.lua
new file mode 100644
index 0000000..bc9a40c
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/config/Autoread.lua
@@ -0,0 +1,5 @@
+vim.o.autoread = true
+vim.api.nvim_create_autocmd({ "BufEnter", "CursorHold", "CursorHoldI", "FocusGained" }, {
+	command = "if mode() != 'c' | checktime | endif",
+	pattern = { "*" },
+})
diff --git a/.config/linux/system/module/common/nvim/config/Etc.lua b/.config/linux/system/module/common/nvim/config/Etc.lua
new file mode 100644
index 0000000..9d6ae87
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/config/Etc.lua
@@ -0,0 +1,27 @@
+-- TODO: Add comments and separate files.
+vim.opt.clipboard     = "unnamedplus"
+-- vim.opt.completeopt   = "menuone,noselect"
+vim.opt.cursorline    = true
+vim.opt.fixeol        = false
+vim.opt.number        = true
+vim.opt.splitbelow    = true
+vim.opt.splitright    = true
+vim.opt.termguicolors = true
+vim.opt.ttyfast       = true
+vim.opt.wildmode      = "longest,list"
+
+-- Disable continuing comments on newline.
+vim.cmd("autocmd BufEnter * set fo-=c fo-=r fo-=o")
+
+-- Disable mouse.
+vim.cmd("set mouse=")
+
+-- Disable signs for diagnostics.
+vim.diagnostic.config({ signs = false })
+
+-- Display invisible characters.
+-- vim.cmd("set list listchars=tab:>\\ ,trail:-,eol:,lead:.")
+vim.cmd("set list listchars=tab:>\\ ,trail:-,lead:.")
+
+-- Relative line numbers.
+vim.wo.relativenumber = true
diff --git a/.config/linux/system/module/common/nvim/config/Search.lua b/.config/linux/system/module/common/nvim/config/Search.lua
new file mode 100644
index 0000000..08e709e
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/config/Search.lua
@@ -0,0 +1,5 @@
+vim.opt.hlsearch   = true
+vim.opt.ignorecase = true
+vim.opt.incsearch  = true
+vim.opt.showmatch  = true
+vim.opt.smartcase  = true
diff --git a/.config/linux/system/module/common/nvim/config/Tab.lua b/.config/linux/system/module/common/nvim/config/Tab.lua
new file mode 100644
index 0000000..ef4af91
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/config/Tab.lua
@@ -0,0 +1,9 @@
+vim.opt.autoindent  = true
+vim.opt.expandtab   = false
+vim.opt.shiftwidth  = 2
+-- vim.opt.smartindent = true
+vim.opt.softtabstop = 2
+vim.opt.tabstop     = 2
+
+-- Disable Markdown forced formatting.
+vim.g.markdown_recommended_style = 0
diff --git a/.config/linux/system/module/common/nvim/key/Autocomplete.lua b/.config/linux/system/module/common/nvim/key/Autocomplete.lua
new file mode 100644
index 0000000..ad9ee38
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Autocomplete.lua
@@ -0,0 +1,5 @@
+-- Autocomplete.
+rekey_input("<C-Space>", "<C-n>")
+
+-- LSP autocomplete.
+rekey_normal("<C-Space>", "<cmd>lua vim.lsp.buf.code_action()<cr>")
diff --git a/.config/linux/system/module/common/nvim/key/Buffer.lua b/.config/linux/system/module/common/nvim/key/Buffer.lua
new file mode 100644
index 0000000..9c2f977
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Buffer.lua
@@ -0,0 +1,12 @@
+-- New empty buffer.
+remap_normal("<Leader>n", "<cmd>enew<cr>")
+
+-- Close buffer.
+function _buf_close()
+	pcall(vim.cmd, "w")
+	vim.cmd[[bp|sp|bn|bd!]]
+end
+rekey_normal("<Leader>x", "<cmd>lua _buf_close()<cr>")
+
+-- Close all hidden buffers.
+rekey_normal("<Leader>X", "<cmd>BDelete hidden<cr><C-l>")
diff --git a/.config/linux/system/module/common/nvim/key/Comment.lua b/.config/linux/system/module/common/nvim/key/Comment.lua
new file mode 100644
index 0000000..3991e1d
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Comment.lua
@@ -0,0 +1,5 @@
+-- Toggle comment for the selected line.
+vim.keymap.set("n", "<Leader>/", require("SingleComment").SingleComment, { expr = true })
+
+-- Toggle comments for multiple lines.
+vim.keymap.set("v", "<Leader>/", require("SingleComment").Comment, {})
diff --git a/.config/linux/system/module/common/nvim/key/Common.lua b/.config/linux/system/module/common/nvim/key/Common.lua
new file mode 100644
index 0000000..0645201
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Common.lua
@@ -0,0 +1,22 @@
+-- Write all we can and exit. Created this to drop non-writable stuff when piping to nvim.
+function bye()
+	pcall(vim.cmd, "wa")
+	vim.cmd[[qa!]]
+end
+
+-- Repeat previous command.
+rekey_normal("<Leader>.", "@:")
+rekey_visual("<Leader>.", "@:")
+
+-- Save everything.
+rekey_normal("zz", "<cmd>wa<cr>")
+
+-- Save all we can and leave.
+rekey_normal("<Leader>z", "<cmd>lua bye()<cr>")
+
+-- Compatibility alias for visual selection.
+rekey_normal("<Leader>v", "v")
+
+-- Remap ; to :.
+rekey_normal(";", ":")
+rekey_visual(";", ":")
diff --git a/.config/linux/system/module/common/nvim/key/Filetree.lua b/.config/linux/system/module/common/nvim/key/Filetree.lua
new file mode 100644
index 0000000..fe19a3e
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Filetree.lua
@@ -0,0 +1,2 @@
+-- Toggle file tree.
+rekey_normal("<Leader>1", "<cmd>NvimTreeToggle<cr>")
diff --git a/.config/linux/system/module/common/nvim/key/Fold.lua b/.config/linux/system/module/common/nvim/key/Fold.lua
new file mode 100644
index 0000000..6186f05
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Fold.lua
@@ -0,0 +1,5 @@
+-- Toggle fold under cursor.
+remap_normal("<Leader>o", "za")
+
+-- Fold everything.
+remap_normal("<Leader>O", "zM")
diff --git a/.config/linux/system/module/common/nvim/key/Gitsigns.lua b/.config/linux/system/module/common/nvim/key/Gitsigns.lua
new file mode 100644
index 0000000..dffa62b
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Gitsigns.lua
@@ -0,0 +1,2 @@
+-- Toggle Git inspection mode.
+rekey_normal("<Leader>g", "<cmd>Gitsigns toggle_current_line_blame<cr><cmd>Gitsigns toggle_word_diff<cr><cmd>Gitsigns toggle_linehl<cr>")
diff --git a/.config/nvim/lua/key/Leader.lua b/.config/linux/system/module/common/nvim/key/Leader.lua
similarity index 86%
rename from .config/nvim/lua/key/Leader.lua
rename to .config/linux/system/module/common/nvim/key/Leader.lua
index c47be11..b99ec09 100644
--- a/.config/nvim/lua/key/Leader.lua
+++ b/.config/linux/system/module/common/nvim/key/Leader.lua
@@ -1,5 +1,3 @@
-require("key/Rekey")
-
 leader = " "
 
 vim.g.mapleader      = leader
diff --git a/.config/linux/system/module/common/nvim/key/Lsp.lua b/.config/linux/system/module/common/nvim/key/Lsp.lua
new file mode 100644
index 0000000..e69de29
diff --git a/.config/linux/system/module/common/nvim/key/Navigation.lua b/.config/linux/system/module/common/nvim/key/Navigation.lua
new file mode 100644
index 0000000..78e6a5d
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Navigation.lua
@@ -0,0 +1,23 @@
+-- Switch windows.
+rekey_normal("<Leader>a", "<C-w>h")
+rekey_normal("<Leader>d", "<C-w>l")
+rekey_normal("<Leader>s", "<C-w>j")
+rekey_normal("<Leader>w", "<C-w>k")
+
+-- Switch buffers.
+rekey_normal("<Leader>E", "<cmd>BufferLineMoveNext<cr>")
+rekey_normal("<Leader>Q", "<cmd>BufferLineMovePrev<cr>")
+rekey_normal("<Leader>e", "<cmd>BufferLineCycleNext<cr>")
+rekey_normal("<Leader>q", "<cmd>BufferLineCyclePrev<cr>")
+
+-- Splits.
+rekey_normal("<Leader>\\", "<cmd>vsplit<cr>")
+rekey_normal("<Leader>-",  "<cmd>split<cr>")
+rekey_normal("<Leader>=",  "<C-w>=") -- Equalize split sizes.
+rekey_normal("<Leader>c",  "<C-w>q") -- Close split.
+
+-- Resize splits.
+rekey_normal("<Leader>A", "4<C-w><")
+rekey_normal("<Leader>D", "4<C-w>>")
+rekey_normal("<Leader>S", "2<C-w>+")
+rekey_normal("<Leader>W", "2<C-w>-")
diff --git a/.config/linux/system/module/common/nvim/key/Rekey.lua b/.config/linux/system/module/common/nvim/key/Rekey.lua
new file mode 100644
index 0000000..314e975
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Rekey.lua
@@ -0,0 +1,49 @@
+-- Base rekey function.
+local function rekey(t, key, command)
+	vim.api.nvim_set_keymap(t, key, command, { noremap = true })
+end
+
+-- Base remap function.
+local function remap(t, key, command)
+	vim.api.nvim_set_keymap(t, key, command, { noremap = false })
+end
+
+-- Rekey in normal mode.
+function rekey_normal(key, command)
+	rekey("n", key, command)
+end
+
+-- Rekey in input mode.
+function rekey_input(key, command)
+	rekey("i", key, command)
+end
+
+-- Rekey in visual mode.
+function rekey_visual(key, command)
+	rekey("v", key, command)
+end
+
+-- Rekey in terminal mode.
+function rekey_terminal(key, command)
+	rekey("t", key, command)
+end
+
+-- Remap in normal mode.
+function remap_normal(key, command)
+	remap("n", key, command)
+end
+
+-- Remap in input mode.
+function remap_input(key, command)
+	remap("i", key, command)
+end
+
+-- Remap in visual mode.
+function remap_visual(key, command)
+	remap("v", key, command)
+end
+
+-- Remap in terminal mode.
+function remap_terminal(key, command)
+	remap("t", key, command)
+end
diff --git a/.config/linux/system/module/common/nvim/key/Sort.lua b/.config/linux/system/module/common/nvim/key/Sort.lua
new file mode 100644
index 0000000..3b234ef
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Sort.lua
@@ -0,0 +1,2 @@
+-- Sort visual selection alphabetically.
+rekey_visual("<Leader>A", ":'<,'>sort<cr>")
diff --git a/.config/linux/system/module/common/nvim/key/Telescope.lua b/.config/linux/system/module/common/nvim/key/Telescope.lua
new file mode 100644
index 0000000..b747f5e
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Telescope.lua
@@ -0,0 +1,6 @@
+rekey_normal("<Leader>fa", "<cmd>Telescope<cr>")
+rekey_normal("<Leader>fb", "<cmd>lua require('telescope.builtin').buffers()<cr>")
+rekey_normal("<Leader>ff", "<cmd>lua require('telescope.builtin').find_files()<cr>")
+rekey_normal("<Leader>fg", "<cmd>lua require('telescope.builtin').live_grep()<cr>")
+rekey_normal("<Leader>fh", "<cmd>lua require('telescope.builtin').help_tags()<cr>")
+rekey_normal("<Leader>ft", "<cmd>Telescope treesitter<cr>")
diff --git a/.config/linux/system/module/common/nvim/key/Terminal.lua b/.config/linux/system/module/common/nvim/key/Terminal.lua
new file mode 100644
index 0000000..359cc74
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Terminal.lua
@@ -0,0 +1,5 @@
+-- Open terminal window.
+rekey_normal("<Leader>4", "<cmd>terminal<cr>")
+
+-- Detach from terminal with Esc key.
+rekey_terminal("<Esc>", "<C-\\><C-n>")
diff --git a/.config/linux/system/module/common/nvim/key/Todo.lua b/.config/linux/system/module/common/nvim/key/Todo.lua
new file mode 100644
index 0000000..7e84da8
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Todo.lua
@@ -0,0 +1,2 @@
+-- Toggle To-do window.
+rekey_normal("<Leader>3", "<cmd>TroubleToggle todo<cr>")
diff --git a/.config/linux/system/module/common/nvim/key/Trouble.lua b/.config/linux/system/module/common/nvim/key/Trouble.lua
new file mode 100644
index 0000000..ea948e8
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Trouble.lua
@@ -0,0 +1,2 @@
+-- Toggle diagnostics window.
+rekey_normal("<Leader>2", "<cmd>TroubleToggle document_diagnostics<cr>")
diff --git a/.config/linux/system/module/common/nvim/key/Update.lua b/.config/linux/system/module/common/nvim/key/Update.lua
new file mode 100644
index 0000000..f2fcca6
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Update.lua
@@ -0,0 +1,5 @@
+-- Update all command.
+vim.api.nvim_create_user_command("Update", function (args)
+	vim.cmd("PackerUpdate")
+	vim.cmd("TSUpdate")
+end, { desc = "Update everything." })
diff --git a/.config/linux/system/module/common/nvim/key/Whichkey.lua b/.config/linux/system/module/common/nvim/key/Whichkey.lua
new file mode 100644
index 0000000..afb61aa
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/key/Whichkey.lua
@@ -0,0 +1,2 @@
+-- Show keymap help.
+rekey_normal("?", "<cmd>WhichKey<cr>")
diff --git a/.config/linux/system/module/common/nvim/plugin/Align.lua b/.config/linux/system/module/common/nvim/plugin/Align.lua
new file mode 100644
index 0000000..7db2b57
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Align.lua
@@ -0,0 +1,7 @@
+require("mini.align").setup {
+	mappings = {
+		start = "<Leader>a",
+		-- start_with_preview = '<Leader>A',
+	},
+}
+
diff --git a/.config/linux/system/module/common/nvim/plugin/Autoclose.lua b/.config/linux/system/module/common/nvim/plugin/Autoclose.lua
new file mode 100644
index 0000000..e932054
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Autoclose.lua
@@ -0,0 +1,13 @@
+require("autoclose").setup({
+	keys = {
+		["'"]  = { escape = false, close = false, pair = "''",   disabled_filetypes = {} },
+		["("]  = { escape = true,  close = true,  pair = "()",   disabled_filetypes = {} },
+		["<"]  = { escape = true,  close = true,  pair = "<>",   disabled_filetypes = {} },
+		["\""] = { escape = true,  close = true,  pair = "\"\"", disabled_filetypes = {} },
+		["`"]  = { escape = true,  close = true,  pair = "``",   disabled_filetypes = {} },
+		["{"]  = { escape = true,  close = true,  pair = "{}",   disabled_filetypes = {} },
+	},
+	-- options = {
+	-- 	disabled_filetypes = { "text", "markdown" },
+	-- }
+})
diff --git a/.config/linux/system/module/common/nvim/plugin/Bufferline.lua b/.config/linux/system/module/common/nvim/plugin/Bufferline.lua
new file mode 100644
index 0000000..da65645
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Bufferline.lua
@@ -0,0 +1 @@
+require("bufferline").setup()
diff --git a/.config/linux/system/module/common/nvim/plugin/Closebuffers.lua b/.config/linux/system/module/common/nvim/plugin/Closebuffers.lua
new file mode 100644
index 0000000..a1f2906
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Closebuffers.lua
@@ -0,0 +1,7 @@
+require("close_buffers").setup({
+	file_glob_ignore  = {},
+	file_regex_ignore = {},
+	filetype_ignore   = {},
+	next_buffer_cmd   = nil,
+	preserve_window_layout = { "this", "nameless" },
+})
diff --git a/.config/linux/system/module/common/nvim/plugin/Filetree.lua b/.config/linux/system/module/common/nvim/plugin/Filetree.lua
new file mode 100644
index 0000000..8d61b72
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Filetree.lua
@@ -0,0 +1,36 @@
+-- Disable netrw at the very start of your init.lua.
+vim.g.loaded_netrw       = 1
+vim.g.loaded_netrwPlugin = 1
+
+local function my_on_attach(bufnr)
+	local api = require "nvim-tree.api"
+	
+	local function opts(desc)
+		return { desc = "nvim-tree: " .. desc, buffer = bufnr, noremap = true, silent = true, nowait = true }
+	end
+	
+	-- Default mappings.
+	api.config.mappings.default_on_attach(bufnr)
+	
+	-- Custom mappings.
+	vim.keymap.set('n', '<Leader><Tab>', api.tree.change_root_to_node, opts('Cd into'))
+end
+
+-- Set termguicolors to enable highlight groups.
+vim.opt.termguicolors = true
+
+-- Setup nvim-tree.
+require("nvim-tree").setup({
+	on_attach = my_on_attach,
+	sort_by   = "case_sensitive",
+	view = {
+		width = 30,
+	},
+	renderer = {
+		group_empty = true,
+	},
+	filters = {
+		dotfiles    = false,
+		git_ignored = false
+	},
+})
diff --git a/.config/linux/system/module/common/nvim/plugin/Fold.lua b/.config/linux/system/module/common/nvim/plugin/Fold.lua
new file mode 100644
index 0000000..b088a28
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Fold.lua
@@ -0,0 +1,3 @@
+vim.opt.foldexpr   = "nvim_treesitter#foldexpr()"
+vim.opt.foldlevel  = 99
+vim.opt.foldmethod = "expr"
diff --git a/.config/linux/system/module/common/nvim/plugin/Gitsigns.lua b/.config/linux/system/module/common/nvim/plugin/Gitsigns.lua
new file mode 100644
index 0000000..c26b670
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Gitsigns.lua
@@ -0,0 +1,43 @@
+require("gitsigns").setup {
+	signs = {
+		add          = { text = "│" },
+		change       = { text = "│" },
+		changedelete = { text = "~" },
+		delete       = { text = "_" },
+		topdelete    = { text = "‾" },
+		untracked    = { text = "┆" },
+	},
+	linehl     = false,
+	numhl      = true,
+	signcolumn = false,
+	word_diff  = false,
+	watch_gitdir = {
+		follow_files = true,
+	},
+	attach_to_untracked = true,
+	current_line_blame  = false,
+	current_line_blame_opts = {
+		delay             = 1000,
+		ignore_whitespace = false,
+		virt_text         = true,
+		virt_text_pos     = "eol",
+	},
+	current_line_blame_formatter = "<author>, <author_time:%Y-%m-%d> - <summary>",
+	max_file_length  = 40000,
+	sign_priority    = 6,
+	status_formatter = nil,
+	update_debounce  = 100,
+	preview_config = {
+		border   = "single",
+		col      = 1,
+		relative = "cursor",
+		row      = 0,
+		style    = "minimal",
+	},
+	yadm = {
+		enable = false,
+	},
+}
+
+-- Set custom color.
+vim.cmd("highlight gitsignscurrentlineblame guibg=#00000000 guifg=#aaaaaa")
diff --git a/.config/linux/system/module/common/nvim/plugin/Gruvbox.lua b/.config/linux/system/module/common/nvim/plugin/Gruvbox.lua
new file mode 100644
index 0000000..50c976d
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Gruvbox.lua
@@ -0,0 +1 @@
+vim.cmd("colorscheme gruvbox-material")
diff --git a/.config/linux/system/module/common/nvim/plugin/Indent.lua b/.config/linux/system/module/common/nvim/plugin/Indent.lua
new file mode 100644
index 0000000..279f4f7
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Indent.lua
@@ -0,0 +1,6 @@
+-- Auto-detect indentation type.
+require("indent-o-matic").setup {
+	max_lines       = 1024,
+	skip_multiline  = true,
+	standard_widths = { 2, 4, 8 },
+}
diff --git a/.config/linux/system/module/common/nvim/plugin/Init.lua b/.config/linux/system/module/common/nvim/plugin/Init.lua
new file mode 100644
index 0000000..8394b1a
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Init.lua
@@ -0,0 +1,49 @@
+local ensure_packer = function()
+	local fn = vim.fn
+	local install_path = fn.stdpath("data").."/site/pack/packer/start/packer.nvim"
+	if fn.empty(fn.glob(install_path)) > 0 then
+		fn.system({"git", "clone", "--depth", "1", "https://git.voronind.com/mirror/packer.nvim.git", install_path})
+		vim.cmd [[packadd packer.nvim]]
+		return true
+	end
+	return false
+end
+
+local packer_bootstrap = ensure_packer()
+
+local available = function(commands)
+	for _, command in ipairs(commands) do
+		if vim.fn.executable(command) ~= 1 then
+			return false
+		end
+	end
+	return true
+end
+
+return require("packer").startup(function(use)
+	use "https://git.voronind.com/mirror/SingleComment.nvim.git"
+	use "https://git.voronind.com/mirror/autoclose.nvim.git"
+	use "https://git.voronind.com/mirror/bufferline.nvim.git"
+	use "https://git.voronind.com/mirror/close-buffers.nvim.git"
+	use "https://git.voronind.com/mirror/gitsigns.nvim.git"
+	use "https://git.voronind.com/mirror/gruvbox-material.git"
+	use "https://git.voronind.com/mirror/indent-o-matic.git"
+	use "https://git.voronind.com/mirror/lualine.nvim.git"
+	use "https://git.voronind.com/mirror/mini.align.git"
+	use "https://git.voronind.com/mirror/nvim-lspconfig.git"
+	use "https://git.voronind.com/mirror/nvim-tree.lua.git"
+	use "https://git.voronind.com/mirror/nvim-treesitter.git"
+	use "https://git.voronind.com/mirror/nvim-web-devicons.git"
+	use "https://git.voronind.com/mirror/packer.nvim.git"
+	use "https://git.voronind.com/mirror/plenary.nvim.git"
+	use "https://git.voronind.com/mirror/telescope.nvim.git"
+	use "https://git.voronind.com/mirror/todo-comments.nvim.git"
+	use "https://git.voronind.com/mirror/tokyonight.nvim.git"
+	use "https://git.voronind.com/mirror/trouble.nvim.git"
+	use "https://git.voronind.com/mirror/which-key.nvim.git"
+
+	-- Auto-install.
+	if packer_bootstrap then
+		require("packer").sync()
+	end
+end)
diff --git a/.config/linux/system/module/common/nvim/plugin/Lualine.lua b/.config/linux/system/module/common/nvim/plugin/Lualine.lua
new file mode 100644
index 0000000..3029c4b
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Lualine.lua
@@ -0,0 +1,40 @@
+require("lualine").setup {
+	options = {
+		-- theme = "ayu_mirage",
+		icons_enabled        = true,
+		component_separators = { left = "", right = ""},
+		section_separators   = { left = "", right = ""},
+		disabled_filetypes = {
+			statusline = {},
+			winbar     = {},
+		},
+		always_divide_middle = true,
+		globalstatus         = false,
+		ignore_focus         = {},
+		refresh = {
+			statusline = 1000,
+			tabline    = 1000,
+			winbar     = 1000,
+		}
+	},
+	sections = {
+		lualine_a = {"mode"},
+		lualine_b = {"branch", "diff", "diagnostics"},
+		lualine_c = {"filename"},
+		lualine_x = {"encoding", "fileformat", "filetype"},
+		lualine_y = {"progress"},
+		lualine_z = {"location"},
+	},
+	inactive_sections = {
+		lualine_a = {},
+		lualine_b = {},
+		lualine_c = {"filename"},
+		lualine_x = {"location"},
+		lualine_y = {},
+		lualine_z = {},
+	},
+	extensions      = {},
+	inactive_winbar = {},
+	tabline         = {},
+	winbar          = {},
+}
diff --git a/.config/linux/system/module/common/nvim/plugin/Telescope.lua b/.config/linux/system/module/common/nvim/plugin/Telescope.lua
new file mode 100644
index 0000000..d30fb98
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Telescope.lua
@@ -0,0 +1,11 @@
+require("telescope").setup{
+	defaults = {
+		mappings = {
+			i = {
+				["<C-?>"] = "which_key",
+			}
+		}
+	},
+	extensions = { },
+	pickers    = { },
+}
diff --git a/.config/linux/system/module/common/nvim/plugin/Todo.lua b/.config/linux/system/module/common/nvim/plugin/Todo.lua
new file mode 100644
index 0000000..e583a45
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Todo.lua
@@ -0,0 +1,53 @@
+require("todo-comments").setup {
+	sign_priority = 8,
+	signs         = false,
+	keywords = {
+		FIX = {
+			alt   = { "FIXME", "BUG", "FIXIT", "ISSUE" },
+			color = "error",
+			icon  = " ",
+		},
+		HACK = { icon = " ", color = "warning" },
+		NOTE = { icon = " ", color = "hint", alt = { "INFO" } },
+		PERF = { icon = " ", alt = { "OPTIM", "PERFORMANCE", "OPTIMIZE" } },
+		TEST = { icon = "⏲ ", color = "test", alt = { "TESTING", "PASSED", "FAILED" } },
+		TODO = { icon = " ", color = "info" },
+		WARN = { icon = " ", color = "warning", alt = { "WARNING", "XXX" } },
+	},
+	gui_style = {
+		bg = "BOLD",
+		fg = "NONE",
+	},
+	merge_keywords = true,
+	highlight = {
+		after             = "fg",
+		before            = "",
+		comments_only     = true,
+		exclude           = {},
+		keyword           = "wide",
+		max_line_len      = 400,
+		multiline         = true,
+		multiline_context = 10,
+		multiline_pattern = "^.",
+		pattern           = [[.*<(KEYWORDS)\s*:]],
+	},
+	colors = {
+		default = { "Identifier", "#7C3AED" },
+		error   = { "DiagnosticError", "ErrorMsg", "#DC2626" },
+		hint    = { "DiagnosticHint", "#10B981" },
+		info    = { "DiagnosticInfo", "#2563EB" },
+		test    = { "Identifier", "#FF00FF" },
+		warning = { "DiagnosticWarn", "WarningMsg", "#FBBF24" },
+	},
+	search = {
+		command = "rg",
+		args = {
+			"--color=never",
+			"--no-heading",
+			"--with-filename",
+			"--line-number",
+			"--column",
+		},
+		pattern = [[\b(KEYWORDS):]],
+	},
+}
diff --git a/.config/linux/system/module/common/nvim/plugin/Tokyonight.lua b/.config/linux/system/module/common/nvim/plugin/Tokyonight.lua
new file mode 100644
index 0000000..667ee34
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Tokyonight.lua
@@ -0,0 +1,23 @@
+require("tokyonight").setup({
+	light_style     = "night",
+	style           = "night",
+	terminal_colors = true,
+	transparent     = false,
+	styles = {
+		comments  = { italic = true },
+		floats    = "dark",
+		functions = {},
+		keywords  = { italic = true },
+		sidebars  = "dark",
+		variables = {},
+	},
+	day_brightness           = 0.3,
+	dim_inactive             = false,
+	hide_inactive_statusline = false,
+	lualine_bold             = false,
+	on_colors                = function(colors) end,
+	on_highlights            = function(highlights, colors) end,
+	sidebars                 = { "qf", "help" },
+})
+
+-- vim.cmd[[colorscheme tokyonight]]
diff --git a/.config/linux/system/module/common/nvim/plugin/Treesitter.lua b/.config/linux/system/module/common/nvim/plugin/Treesitter.lua
new file mode 100644
index 0000000..ecf3eca
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Treesitter.lua
@@ -0,0 +1,19 @@
+require("nvim-treesitter.configs").setup {
+	auto_install     = true,
+	-- ensure_installed = "all",
+	sync_install     = false,
+	highlight = {
+		additional_vim_regex_highlighting = false,
+		enable = true,
+		use_languagetree = true,
+	},
+	indent = {
+		enable = true,
+	},
+	autotag = {
+		enable = true
+	},
+	rainbow = {
+		enable = true
+	},
+}
diff --git a/.config/linux/system/module/common/nvim/plugin/Trouble.lua b/.config/linux/system/module/common/nvim/plugin/Trouble.lua
new file mode 100644
index 0000000..38ef1e9
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/Trouble.lua
@@ -0,0 +1 @@
+require("trouble").setup()
diff --git a/.config/linux/system/module/common/nvim/plugin/lsp/Kotlin.lua b/.config/linux/system/module/common/nvim/plugin/lsp/Kotlin.lua
new file mode 100644
index 0000000..e960df6
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/lsp/Kotlin.lua
@@ -0,0 +1,3 @@
+local lspconfig = require("lspconfig")
+
+lspconfig.kotlin_language_server.setup {}
diff --git a/.config/linux/system/module/common/nvim/plugin/lsp/Python.lua b/.config/linux/system/module/common/nvim/plugin/lsp/Python.lua
new file mode 100644
index 0000000..5642869
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/lsp/Python.lua
@@ -0,0 +1,3 @@
+local lspconfig = require("lspconfig")
+
+lspconfig.pyright.setup {}
diff --git a/.config/linux/system/module/common/nvim/plugin/lsp/Rust.lua b/.config/linux/system/module/common/nvim/plugin/lsp/Rust.lua
new file mode 100644
index 0000000..2ca5362
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/lsp/Rust.lua
@@ -0,0 +1,16 @@
+local lspconfig = require("lspconfig")
+
+lspconfig.rust_analyzer.setup {
+	settings = {
+		["rust-analyzer"] = {
+			rustfmt = {
+				extraArgs = {
+					"--config",
+					"hard_tabs=true",
+				}
+			}
+		},
+	},
+}
+
+vim.g.rust_recommended_style = false
diff --git a/.config/linux/system/module/common/nvim/plugin/lsp/Tex.lua b/.config/linux/system/module/common/nvim/plugin/lsp/Tex.lua
new file mode 100644
index 0000000..bc0fb7a
--- /dev/null
+++ b/.config/linux/system/module/common/nvim/plugin/lsp/Tex.lua
@@ -0,0 +1,60 @@
+local lspconfig = require('lspconfig')
+local config = {
+	filetypes = {
+		"bib",
+		"gitcommit",
+		"markdown",
+		"org",
+		"pandoc",
+		"plaintex",
+		"rnoweb",
+		"rst",
+		"tex",
+		"text",
+	},
+	settings = {
+		["ltex"] = {
+			language = "auto"
+		}
+	}
+}
+
+lspconfig.ltex.setup(config)
+
+-- Use TeX LSP for spellcheck.
+vim.api.nvim_create_user_command("SCOn", function (args)
+	lspconfig.ltex.setup(config)
+end, { desc = "Enable spellcheck." })
+
+vim.api.nvim_create_user_command("SCOff", function (args)
+	lspconfig.ltex.setup { filetypes = {} }
+end, { desc = "Disable spellcheck." })
+
+vim.api.nvim_create_user_command("SCLangRU", function (args)
+	config.settings['ltex'].language = "ru-RU"
+	lspconfig.ltex.setup(config)
+end, { desc = "Set spellcheck to Russian." })
+
+vim.api.nvim_create_user_command("SCLangEN", function (args)
+	config.settings['ltex'].language = "en-US"
+	lspconfig.ltex.setup(config)
+end, { desc = "Set spellcheck to English." })
+
+vim.api.nvim_create_user_command("SCLangAuto", function (args)
+	config.settings['ltex'].language = "auto"
+	lspconfig.ltex.setup(config)
+end, { desc = "Set spellcheck to Auto." })
+
+vim.api.nvim_create_user_command("SCForce", function (args)
+	vim.cmd("setfiletype text")
+	vim.cmd("SCOn")
+end, { desc = "Set buffer type to text." })
+
+vim.api.nvim_create_user_command("SCReset", function (args)
+	vim.cmd("filetype detect")
+	vim.cmd("SCLangAuto")
+end, { desc = "Set buffer type to auto." })
+
+vim.api.nvim_create_user_command("SCInfo", function (args)
+	vim.cmd("LspInfo")
+end, { desc = "Show info about spellcheck." })