nixfiles :3

ok hi this is my one big flake for every machine i own. used to be eight separate per-host repos, now it's a monorepo. the code is a bit of a zoo (every host pins its own nixpkgs) but welp, it works :3

the machines

attr	what	nixpkgs
m68k (darwin)	macbook air m3, my main laptop	26.05
macvm (darwin)	x86 macos vm, also hydra runner	25.11
macmini	mac mini server	unstable
nixvm	linux vm	25.11
playground1	hostkey vds, runs a pile of services	25.11
playground2	hostkey vds, minecraft mostly	25.11
puppy	vds, serves a lil website (srvos server profile)	26.05
eva01	thinkpad x230, secondary laptop	unstable
alphys	surface laptop 3 (linux-surface kernel, disko)	unstable
default (nix-on-droid)	phone (pixel 3a)	24.05

how its wired

• hosts/<name>/ - per-host config
• hosts/nixos-common.nix - baseline auto-imported into every nixos host
• lib/partials/ - opt-in feature modules. every config gets a partials attrset so you just write imports = [ partials.boot-efi partials.chrony ];
• services/ - reusable service modules, pulled in with abs (e.g. (abs "services/tailscale-exit-node.nix"))
• secrets/ - sops secrets, one .sops.yaml at the root
• scripts/ - little helpers (cpr, lmg, cmg, sops)

other goodies handed to each module via specialArgs: inputs, outputs (= self), and abs "path" (absolute path from the repo root).

impure dependencies

note to self on what has to exist on the host manually:

• /home/lain/.ssh/agenix_key - private age key for sops decryption (needed on playground2, eva01 and alphys)
• ~/.ssh/puppy_host_ed25519_key (on m68k) - puppys ssh host key, generated here and pushed to the box at install time. its what decrypts secrets/puppy.yaml, so losing it means reinstalling puppy

setting up

# nixos
sudo nixos-rebuild switch --flake .#playground1

# darwin
darwin-rebuild switch --flake .#m68k

# phone
nix-on-droid switch --flake .#default

# just check everything evaluates
nix flake check --all-systems

for puppy pls see its readme:

nix run .#nixos-anywhere -- --flake .#puppy root@<ip>

cat in a readme 🐱