alexion
9b36cfadd6
Stand up the walking skeleton the rest of the laptop MVI extends and re-verifies against: the whole neogaia Host evaluates and its system toplevel builds (nix flake check green). - flake.nix: hand-rolled flake (no flake-parts). Base nixos-unstable, plus nixpkgs-unstable and nixos-25.05 for the per-package unstable/stable overlays, home-manager (nixpkgs followed), and chaotic-nyx (deliberately not following our nixpkgs, to keep its binary cache usable). checks build each Host toplevel. - lib/: trimmed helper lib — the Auto-loader (recursive .nix discovery, no null-placeholder hack), the host-builder, and the script-from-file helper. Deps inherited explicitly; no with lib.my, no nixosModules output. - system/: shared base config — the unstable/stable overlays, the user option (defaults to alexion, in wheel, drives system + home-manager user in lockstep), flakes, git, and home-manager as a NixOS module. - modules/example.nix: Auto-loader / Enable-convention reference Module, inert until enabled. - hosts/neogaia/: minimal laptop Host — placeholder filesystems, bootloader, and hardware profile. - CLAUDE.md: project agent instructions with a Gotchas section (nix on the CachyOS dev host, the chaotic overlay/cache behaviour, the Gitea CLI).
18 lines
1.8 KiB
Markdown
18 lines
1.8 KiB
Markdown
# dotfiles-nixos
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One flake that builds every machine the user owns.
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The domain model (Host, Module, Skeleton, Auto-loader, Enable convention, overlays) lives in `.claude/CONTEXT.md`; the current deliverable's spec is `.claude/spec/laptop-mvi.md`.
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## Gotchas
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- Nix on the dev host needs experimental features passed per-command.
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This repo is developed on `neogaia` while it still runs **CachyOS** (the migration target), where Nix is the distro package at `/usr/bin/nix` in multi-user daemon mode.
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The system `/etc/nix/nix.conf` does not enable flakes, so export `NIX_CONFIG="experimental-features = nix-command flakes"` (or pass `--extra-experimental-features 'nix-command flakes'`) for every command.
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- The dev user is a non-trusted daemon client (`nix store info` reports `Trusted: 0`).
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You cannot add substituters from the CLI, so rely on what the flake/config declares (e.g. the chaotic cache is wired by the chaotic module, not a CLI flag).
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- If `/nix/store` is missing or `nix-daemon` is inactive after a fresh Nix install, initialise it with `sudo systemd-tmpfiles --create nix-daemon.conf && sudo systemctl enable --now nix-daemon.socket`.
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- The primary build/verify seam for any Host is `nix flake check`, which builds `checks.x86_64-linux.<host>` (the system toplevel); cheap targeted checks use `nix eval .#nixosConfigurations.<host>.config...`.
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- chaotic-nyx must **not** follow our `nixpkgs`, and its packages are built against chaotic's own pinned nixpkgs (its overlay defaults to `onTopOf = "flake-nixpkgs"`, the cache-friendly path).
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That is what lets the `nyx-cache.chaotic.cx` binary cache hit instead of compiling the CachyOS kernel from source; the tradeoff is that chaotic packages do not see our `unstable`/`stable` overlays.
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- The remote is self-hosted Gitea (`git.alexion.dev`); the forge CLI is `tea` (login `axi`), and `gh` is not installed.
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