My Infrastructure IaC

...Managed with NixOS ❄️  and chezmoi 🤖 

📖  Overview

This repository contains my machine configurations in Infrastructure as Code style. This is possible thanks to combination of NixOS modules, home-manager, and chezmoi.

This repo is a Nix Flake that you can import and use yourself but I don't recommend doing that. You should take it as an inspiration for your infrastructure instead.

Please note that this is a Work In Progress, so stuffs may change without further notice and this README can get outdated. My goal is to have everything as reproducible as possible.

For NixOS machines, everything is managed by NixOS modules and home-manager. As for non NixOS machines, I use combination of home-manager and chezmoi. I use chezmoi mainly to configure the system using chezmoi scripts while home-manager to configure applications in the userspace.

📷  Screenshots

Sway

Tmux

Fish prompt

Neovim

📦  Modules

• Flake Parts to manage flakes outputs.
• home-manager to manage my home directory.
• sops-nix is used to encrypt/decrypt my secrets safely.
• Disko to declaratively manage disks.
• NUR for packages not available in the official NixOS repository.
• nixvim to create reproducible Neovim package.

📂  Directory structure

The structure of this repository is highly opinionated. I shamelessly took the pieces I believe is the best from people and modified it.

• ./flake.nix is the entrypoint for nixos-rebuild and home-manager commands.
• ./flake.lock is the lock file for this flake, updated daily by budimanjojo-bot powered by Renovate.
• ./flakeLib.nix is where I put helper functions used in flake.nix file, this is where the magic happens.
• ./lib is where I put helper functions used in NixOS and home-manager modules.
• ./packages is where I put my own packages, updated daily by budimanjojo-bot powered by nvfetcher.
• ./overlays contains overlays for packages used in NixOS and home-manager modules.
• ./shell.nix accessible via nix develop to have tools needed available in current shell.
• ./system contains my own NixOS modules and per machine system configurations.
• ./home contains my own home-manager modules and per user configurations.
• ./chezmoi contains files used by chezmoi.

📥  How do I bootstrap a new machine

NixOS

• Clone this repository in a directory inside the machine.
• Edit ./flake.nix file and add the new machine specs inside outputs.flake.nixosConfigurations schema.
• Create ./system/hosts/<hostname>/default.nix for the new machine and configure it.
• Create ./home/budiman/hosts/<hostname>.nix for the new machine and configure it.
• Run git add . then sudo nixos-rebuild switch --flake .#<hostname> and I'm done.

Non NixOS

• Install Nix and enable Flake.
• Edit ./flake.nix file and add the new machine specs inside outputs.flake.homeConfigurations schema.
• Create ./home/budiman/hosts/<hostname>.nix for the new machine and configure it.
• Run git add . then nix run nixpkgs.home-manager -c home-manager switch --flake .#budiman@<hostname> and I'm done.

📝  Neovim

My neovim setup is packaged with nixvim and exposed at legacyPackages.neovim from this flake. You can run it directly if you have nix installed and flakes enabled with: nix run github:budimanjojo/nix-config#neovim.

🐟  Fish

Fish is enabled using the home-manager module.

On my non NixOS machines, fish is patched to work without system intervention and I have a chezmoi script that will switch the default shell for the user to ~/.nix-profile/bin/fish.

These are the plugins I'm using:

• Starship
• FZF Fish
• Puffer Fish
• autopair.fish
• fish-abbreviation-tips

🔡  Fonts

Starship requires powerline fonts to work. I suggest Nerd-fonts. The font in the screenshot above is using UbuntuMono Nerd Font Regular. Unifont is also for some glyphs to work. On non NixOS machines, home-manager will install these fonts automatically.

📜  Cheatsheet

Sway/i3/Hyprland keybindings

I use Super key for Sway/i3. hjkl keys are mapped to left, down, up, right arrow keys. S means Super key, [0-9] means number key 0 to 9.

Keypress	Description
S+t	Open terminal app
S+w	Open browser
S+f	Open file manager
S+grave	Open rofi apps menu
S+Esc	Open rofi apps menu
S+F4	Close window
S+k	Change focus to window above
S+j	Change focus to window below
S+h	Change focus to left side window
S+l	Change focus to right side window
S+Shift+k	Move focused window up
S+Shift+j	Move focused window down
S+Shift+h	Move focused window left
S+Shift+l	Move focused window right
S+Ctrl+h	Split opened windows horizontally
S+Ctrl+v	Split opened windows vertically
S+Ctrl+q	Toggle opened windows split
S+Tab	Go to next workspace
S+Shift+Tab	Go to previous workspace
S+Ctrl+t	Toggle window border on/off
S+Ctrl+g	Toggle gaps on/off
S+Ctrl+f	Toggle fullscreen mode on/off
S+Ctrl+s	Change container layout to stacking
S+Ctrl+w	Change container layout to tabbed
S+Ctrl+e	Toggle split layout to horizontal/vertical
S+Shift+Space	Toggle window floating on/off
S+Space	Swap focus between tiling/floating window
S+Shift+p	Move current focused window to scratchpad
S+p	Show/hide scratchpad window
S+[0-9]	Go to workspace #[0-9]
S+Shift+[0-9]	Move focused window to workspace #[0-9]
S+Shift+r	Go to resize container mode
S+Shift+g	Go to resize gaps mode
S+Ctrl+Del	Go to logout mode
Printscreen	Go to screenshot mode
S+Shift+c	Reload configuration
S+Shift+e	Exit

Neovim keybindings

The prefix key is Space. You can override this using your custom .vimrc.local file. <Leader> means you need to press prefix key first. If they are not in the table, that means it's using the default Vim keybindings.

Mode	Keypress	Description
Normal	<Leader>w	Save file
Normal	<Leader>x	Save file and quit
Normal	<Leader>qq	Quit
Normal	<Leader>qa	Force quit without saving
Normal	<Leader>wq	Save file and quit
Normal	Y	Yank from cursor to end of file
Normal	Control+k	Move to the split window above
Normal	Control+j	Move to the split window below
Normal	Control+h	Move to the left split window
Normal	Control+l	Move to the right split window
Normal	<Leader>s	Open new horizontal split window
Normal	<Leader>v	Open new vertical split window
Insert	Control+k	Move cursor Up
Insert	Control+j	Move cursor Down
Insert	Control+h	Move cursor Left
Insert	Control+l	Move cursor Right
Normal	<Leader>tn	Open new tab
Normal	<Leader>td	Close tab
Normal	<Leader>th	Go to previous tab
Normal	<Leader>tl	Go to next tab
Normal	<Leader>te	Open new tab with current buffer's path
Normal	<Leader>hh	Jump back to older cursor position
Normal	<Leader>ll	Jump forward to newer cursor position
Normal/Visual	Tab	Indent current line or selection
Normal/Visual	Shift+Tab	De-indent current line or selection
Normal	<Leader>lr	Restart LSP client
Normal	<Leader>fz	Open FzfLua
Normal	<Leader>ff	Open FzfLua to find files
Normal	<Leader>fg	Open FzfLua to live grep
Normal	<Leader>fc	Open FzfLua to see git commits
Normal	<Leader>fb	Open FzfLua to see opened buffers
Normal	<Leader>fh	Open FzfLua to find help
Normal	<Leader>fk	Open FzfLua to see keymappings
Normal	<Leader>fe	Open FzfLua to find lsp diagnostics
Normal	<Leader>fr	Open FzfLua to find lsp references
Normal	<Leader>fd	Open FzfLua to find lsp typedefs
Normal	<Leader>xx	Toggle Trouble
Normal	<Leader>xr	Toggle Trouble to find lsp references
Normal	Control+f	Toggle oil.nvim file manager
Normal/Term	Control+t	Toggle floating terminal
Normal	<Leader>pp	Format buffer with null-ls
Visual	<Leader>pp	Range format buffer with null-ls
Normal	rn	Do LSP buffer rename
Normal	gd	Do LSP buffer get definition
Normal	gD	Do LSP buffer get declaration
Normal	gh	Do LSP buffer get hover
Normal	gr	Do LSP buffer get references
Normal	gi	Do LSP buffer get implementation

Tmux keybindings

I override the default keybindings for Tmux to be more reasonable. Prefix key is Alt+a for local session and Alt+z for nested session. You can of course override this. <prefix> means you need to press prefix key first, <repeat> means you don't need to press prefix key again after triggering it within repeat-time set (default set to 1 second), <copy-mode> means you must be in copy-mode first. The table below lists all the keybindings set. If they are not in the table, that means it's using the default Tmux keybindings.

Keypress	Description
<prefix>Alt+r	Reload tmux configuration
<prefix>f	Find session, window, pane from list
<prefix>Alt+s	Create new horizontal split window
<prefix>Alt+v	Create new vertical split window
<prefix>r	Rename current window
<prefix>R	Rename current session
<prefix><repeat>k	Move selection to pane above
<prefix><repeat>j	Move selection to pane below
<prefix><repeat>h	Move selection to left pane
<prefix><repeat>l	Move selection to right pane
<prefix><repeat>>	Swap to next pane
<prefix><repeat><	Swap to previous pane
<prefix><repeat>K	Resize current pane upwards
<prefix><repeat>J	Resize current pane downwards
<prefix><repeat>H	Resize current pane to the left
<prefix><repeat>L	Resize current pane to the right
<prefix><repeat>Alt+n	Move selection to next window
<prefix><repeat>Alt+p	Move selection to previous window
<prefix><repeat>Tab	Move selection to next window
<prefix>S	Join current pane to selected window in horizontal split
<prefix>V	Join current pane to selected window in vertical split
<prefix>x	Close current pane
<prefix>X	Close current window
<prefix>Alt+x	Close all other windows
<prefix>a	Get into copy mode
<prefix>p	Paste copied text from last buffer
<prefix>P	Paste copied text from list
<copy-mode>y	Copy selected text
<copy-mode>Y	Copy the whole line of selected text
<copy-mode>D	Copy till the end of line from selected text

Zellij keybindings

I'm migrating my tmux to Zellij. I mimicked my tmux configuration to work in zellij but not everything works the same. Prefix key is Alt+a, I use the "switch to normal mode" in zellij to achieve this. <normal> means you need to be in normal mode, <pane> means pane mode, and so on. The table below lists all the keybindings set.

Keypress	Description
<locked>Alt+a	Swith to normal mode (act like prefix key in tmux)
<normal>Alt+s	Create new horizontal split window and back to locked mode
<normal>Alt+v	Create new vertical split window and back to locked mode
<normal>r	Switch to renametab mode
<normal>h	Move selection to left pane
<normal>j	Move selection to pane below
<normal>k	Move selection to pane above
<normal>l	Move selection to right pane
<normal>>	Move pane around
<normal>H	Resize current pane upwards
<normal>J	Resize current pane downwards
<normal>H	Resize current pane to the left
<normal>L	Resize current pane to the right
<normal>Alt+n	Go to next window
<normal>Alt+p	Go to previous window
<normal>c	Open new tab and back to locked mode
<normal>x	Close current pane and back to locked mode
<normal>a	Open pane with $EDITOR and back to locked mode
<normal>Esc/' '/"\n"	Switch back to locked mode
<renametab>Alt+a	Switch to normal mode
<renametab>"\n"	Switch to locked mode
<renametab>Esc	Confirm tab name and back to locked mode

☕  Acknowledgements

I wrote most of the codes by myself, but there are a lot of stuffs inspired by these repositories.

• MatthiasBenaets/nixos-config for the awesome YouTube video introducing NixOS to me.
• viperML/dotfiles for answering stupid questions on Discord.
• bjw-s/nix-config for being inspiration for my repo structure.
• truxnell/nix-config for being inspiration for my flakeLib functions.