nixfiles/lyrathorpe/home

Interactive shell environment

Everything the shell, terminal multiplexer, git and ssh do beyond their defaults, and where each is defined. All of it is managed declaratively through home-manager — edit the listed file and rebuild, never the generated dotfiles.

Keyboard shortcuts have their own reference: KEYBINDINGS.md.

Area	Defined in
zsh, CLI tools, tmux, ssh, auto-tmux	shell.nix
git (+ delta, commitizen)	git.nix
vim	editor.nix
GUI apps, GTK/Firefox theming, cursor	desktop.nix (graphical hosts only)

Shared by every host via default.nix; the work box also layers ../../system/modules/work/default.nix on top (work email, its own ssh config, extra packages).

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zsh

Feature	Notes
oh-my-zsh	plugins git, man, sudo (Esc-Esc to prepend sudo), colored-man-pages, extract; theme robbyrussell
Autosuggestion	fish-style history suggestions as you type (→ to accept)
Syntax highlighting	commands coloured by validity as you type
Completion	menu completion; the dump is rebuilt on every activation (see Maintenance)
History	100k in-memory/on-disk, deduped, space-prefixed commands ignored, timestamped, shared live across sessions
History substring search	type a fragment, then ↑/↓ cycles matching past commands — works in foot, iTerm2 and the Linux TTY (both CSI and SS3 arrow encodings bound)
Prompt	hostname is prefixed when over SSH

Aliases: ls/ll/la/lt → eza (icons + git), cls → clear. git aliases live in git.nix (below).

CLI tools

Tool	What it gives you
fzf	Ctrl-R fuzzy history, Ctrl-T file picker, Alt-C fuzzy cd
zoxide	z <fragment> jumps to frecent directories
direnv + nix-direnv	per-project environments auto-loaded on cd (cached Nix dev shells)
eza	modern ls (drives the ls aliases)
bat	syntax-highlighting pager; behaves like cat when piped
nix-index	command-not-found: an unknown command tells you which Nix package provides it (prebuilt DB, no manual indexing)
comma (,)	run an uninstalled program once: , cowsay hi
nh	nicer nixos-rebuild/home-manager with diffs; $NH_FLAKE set to the repo. No scheduled GC (it could reap paths a running generation still references) — collect garbage manually with nh clean all / nix-collect-garbage -d

tmux

Auto-start: opening any interactive terminal — foot, iTerm2, the WSL shell, the Linux console — drops you straight into a tmux session named main (attach if it exists, else create). Panes run a plain non-login zsh. It deliberately does not fire for SSH sessions, VS Code's integrated terminal, already-inside-tmux, or non-interactive shells. Escape hatch: NO_TMUX=1 <terminal> opens a bare shell.

Setting	Value
Mode keys	vi
Mouse	on
Scrollback	500000 lines
escape-time	10ms (the 500ms default lagged vim's ESC)
focus-events	on (vim autoread)
base-index / pane-base-index	1
Splits	prefix s vertical, prefix v horizontal (stock %/" unbound)
Pane nav	Alt+arrows (no prefix)
Terminal	default-terminal tmux-256color; truecolor advertised per outer terminal (foot*, xterm-256color/iTerm2) via terminal-features … RGB
Clipboard	set-clipboard on; foot terminal-features advertise truecolor/sync/OSC52/title/cursor

Plugins: sensible, vim-tmux-navigator (Ctrl-h/j/k/l across vim ↔ tmux), yank, catppuccin (Mocha statusline), resurrect + continuum (sessions auto-save and restore across reboots). The statusline draws Nerd-Font glyphs — see Fonts.

Fonts

JetBrainsMono Nerd Font is installed on every host (in common-nixos.nix, because tmux runs everywhere; the Mac installs it to /Library/Fonts via the Darwin config). foot uses it as its main font automatically. iTerm2's font is a GUI setting — set it to JetBrainsMono Nerd Font (Settings → Profiles → Text → Font) so the tmux statusline glyphs render instead of ?.

git

Pager is delta. commitizen is installed on every host; cz defaults to Conventional Commits.

Aliases
st co sw br ci	status / checkout / switch / branch / commit
last unstage	last commit / unstage
lg	graph log, all branches
cz cc	git cz <sub> (e.g. git cz c) and git cc → commitizen prompt

Behaviour
Pulls	rebase, with autostash + autosquash
Fetch	prune deleted remote branches
Conflicts	zdiff3 (shows the common ancestor)
Diffs	histogram algorithm, colour-moved
rerere	remembers + replays conflict resolutions
Commit editor	full diff shown (commit.verbose)
Misc	branches sorted by date, column.ui = auto, help.autocorrect = prompt, push.autoSetupRemote
Global ignores	result, result-*, .direnv, *.swp, .DS_Store
Signing	SSH commit + tag signing (mkDefault, so a host without the key in its agent can disable it). Personal email iam@emmathe.dev; the work box overrides email + signing.

ssh

Feature	Notes
ssh-agent	runs on Linux (launchd on macOS); keys added on first use so the passphrase is typed once per login session — this also feeds git commit signing
macOS	UseKeychain caches the passphrase in the login keychain (guarded by IgnoreUnknown, so a non-Apple ssh skips it instead of erroring)
Gitea remote	code.emmathe.dev → HostName 10.187.1.76 (DNS-override), Port 30009, user git, dedicated key, identitiesOnly
Defaults	the module's deprecated default block is opted out; equivalents kept under settings."*"

The work box keeps its own ~/.ssh/config (home-manager's programs.ssh is forced off there) but still runs the agent.

Maintenance behaviours

• zcompdump reset — ~/.zcompdump* is removed on every activation, so a stale dump (pointing at /nix/store paths a rebuild or a manual GC removed) can't break completion with _git: function definition file not found.
• GC — no scheduled timer; collect garbage deliberately (nh clean all / nix-collect-garbage -d) when no important session is running.

Per-host differences

	Personal Linux (sway)	macOS	Work WSL (EDaaS)
Auto-tmux	yes (foot/TTY)	yes (iTerm2)	yes (WSL shell)
git email	iam@emmathe.dev	iam@emmathe.dev	…@citrix.com (work)
ssh config managed	yes	yes	no (keeps corporate config)
ssh-agent	yes	launchd	yes (work module)
GUI / theming (desktop.nix)	yes	no	no