53 lines
3.4 KiB
Markdown
53 lines
3.4 KiB
Markdown
# NixOS configuration instructions
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## Desktop
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- TODO: Verify this path after the NixOS configuration is migrated.
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When adding a graphical application, add a `window-rewrite` icon mapping in `modules/desktop/session/waybar.nix`.
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The workspace indicator uses this mapping to show an application icon instead of the generic default glyph.
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Match the mapping on the window class.
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Run `hyprctl clients -j | jq -r '.[].class' | sort -u` to list classes in the running session.
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- TODO: Verify this path after the NixOS configuration is migrated.
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Set Hyprland session environment variables in `modules/desktop/session/hyprland/default.nix` with `env = KEY,VALUE`.
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`home.sessionVariables` do **not** reach the Hyprland session because UWSM does not source `hm-session-vars.sh`.
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Source cursor values from `config.stylix.cursor`.
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Set `XCURSOR_*` and `HYPRCURSOR_*` to the same theme for Bibata.
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## Firefox
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- Manage Firefox search engines through `programs.firefox.search` with `force = true`.
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Hide built-in engines with `<engine>.metaData.hidden = true` because omission does not remove them.
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Use current engine ids, such as `default = "ddg"` instead of `"DuckDuckGo"`.
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Decode the built `search.json.mozlz4` with `mozlz4a -d <search.json.mozlz4>` to check the result.
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- Avoid Home Manager Firefox extension settings unless the whole profile can use the legacy extension-storage backend.
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Any non-empty `profiles.<name>.extensions.settings.<id>.settings` sets `extensions.webextensions.ExtensionStorageIDB.enabled = false` for the whole profile.
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## Neovim
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- Nixvim's flake input follows the root nixpkgs source, but its Home Manager module does not reuse the host's `pkgs` instance.
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Keep `programs.nixvim.nixpkgs.useGlobalPackages = true`.
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That setting makes Nixvim use the shared package set without warning that its source default changed.
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## AI tooling
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- Use produced literals for Herdr key names that include shifted punctuation.
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For example, use `prefix+<` instead of `prefix+shift+comma`.
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- Put monorepo Pi extension sources in `.pi/extensions/`.
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Pi discovers them from subdirectories through the local ancestor-resource patch.
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- Treat Home Manager-managed Pi settings as generated output.
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Do not edit them except for throwaway development or local experiments.
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Promote finished settings into the NixOS configuration before treating them as deployed.
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## Gotchas
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- Guest modules are host-agnostic wiring, while host files own deployment-specific service configuration such as served volumes and host paths.
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For example, `guests/copyparty.nix` should expose options and translate them into guest mounts/service settings, while `hosts/pikachu/default.nix` chooses `/inbox`, `/media`, and their backing paths.
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Guest addresses and routes are host-level configuration because a guest module can be used on multiple hosts.
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- `sops.secrets.<name>.owner` must name a user known on the decrypting host.
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Do not set the owner to a guest-only service user unless the host also declares that user.
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Use a host-visible owner plus a shared group mode when the guest service can read the decrypted secret file through its group.
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- Pikachu deploys from the monorepo checkout copied to `~/dev`.
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Do not use the old `~/wrk/dotfiles` path for remote rebuild commands.
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- Do not hand-author `hardware-configuration.nix` for a host that has not been generated on that machine.
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Generate it on the target system or live ISO, then stage it before evaluating the flake.
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