I use NixOS and/or Home Manager to declaratively manage my computers. This repo is a flake that defines configurations for each of my machines, as well as some software I've packaged because they weren't in Nixpkgs:

config 🍍 nix flake show
├───homeConfigurations
│   ╰───ATLAS: steamdeck
├───nixosConfigurations
│   ├───Cortana: raspberry pi 4B
│   ├───WOPR:    framework laptop 13" (AMD 7640U)
│   ├───HAL:     main desktop
│   ╰───ISO:     bootable image for bootstrapping
├───darwinConfigurations
│   ╰───GLaDOS: work macbook (14" M4 Pro 64GB)
├───homeModules
│   ╰───fightcade: wrapper to play retro fighting games
├───nixosModules
│   ├───m-overlay:    security wrapper for input viewer
│   ├───porkbun-ddns: update ip for porkbun DNS entries
│   ╰───rust-rpxy:    reverse proxy service
├───overlays
│   ╰───default: Nixpkgs overlay with my packages and overrides
╰───packages
    ├───android-messages: desktop messages client
    ├───apotris: block stacking game
    ├───ascii-rain: pretty terminal rain animation
    ├───audio-select: pulse-audio device selector
    ├───barchart: draw barcharts in the terminal
    ├───bibata-modern-classic: mouse cursor theme
    ├───cargo-clone-crate: better cargo clone command
    ├───d-rs: stream processing utilities
    ├───dl: get the latest downloaded file
    ├───eontimer: pokémon RNG timer
    ├───fio-plot: disk benchmarking tool
    ├───fence: chess board visualizer
    ├───git-heatmap: view change frequency of git repo
    ├───git-undeadname: does what it says on the tin
    ├───glkitty: gears demo in the terminal
    ├───hovalaag: assembly programming game
    ├───lowcharts: draw plots and histograms in the terminal
    ├───m-overlay: gamecube input visualizer for dolphin
    ├───melee-quick-mod: ssbm texture patcher
    ├───posting: http api explorer
    ├───rssfetch: RSS feed scraper
    ├───rust-rpxy: simple reverse proxy
    ├───s2yt: spotify to youtube music transfer tool
    ├───slpz: compress slippi replays
    ├───tab: command line music tabs
    ├───term-rustdoc: tui docs browser
    ╰───zeco: zellij remote multiplayer

I used to use this as a bare git repo. If you're not sold on nix/home-manager I think it's still a pretty ideal way to manage your dotfiles. Now when my home-manager activation script runs, it symlinks everything in the dotfiles dir into $HOME so that you can edit most config files without having to run switch.

garnix gives me speedy CI and caching so I don't have to rebuild my packages or overrides on all of my machines:

I learned a lot from trawling through other peoples configs, here are some cool ones to check out:

• https://github.com/Misterio77/nix-config
• https://github.com/rrbutani/nix-config
• https://gitlab.com/lunik1/nix-config
• https://git.jhink.org/jacob/nix_config
• https://github.com/sioodmy/dotfiles
• https://xeiaso.net/blog/prometheus-grafana-loki-nixos-2020-11-20//https://xeiaso.net/blog/nix-flakes-3-2022-04-07/ (they have lots of good nix related posts)
• https://ianthehenry.com/posts/how-to-learn-nix/overriding/ (and other parts of that series)
• https://github.com/PROxZIMA/.dotfiles/ (not nix, just pretty)
• https://github.com/siduck/dotfiles (ditto)