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feat(toolkit): bundle the baseline interactive toolset (task 0001)

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Add modules.toolkit, an aggregator that enables fish, tmux, nvim, git,
and direnv as one unit, so any Host or Guest shell feels identical. Each
member is set via mkDefault, so a Host can still override any single
piece while the one flag brings up the whole bundle.

neogaia now enables the bundle as a single line in place of its five
individual enables, keeping the Host a flat checklist.
This commit is contained in:
alexion
2026-07-25 12:15:19 -04:00
parent 582800d548
commit f4c4d1430c
3 changed files with 42 additions and 5 deletions
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23
.claude/tasks/0001-toolkit-bundle.md Normal file
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---
spec: guests
---
## What to build
A new bundle Module, `modules.toolkit`, that turns on the baseline interactive environment — fish, tmux, nvim, git, and direnv — as one unit.
Enabling it on a Host brings up all five together, so any Host or Guest shell feels identical.
This is a deliberate bundle wanted as a unit, distinct from the grouping-directory aggregate enables ADR 0004 rejected.
## Acceptance criteria
- [x] `modules.toolkit` declares an `enable` option following the Enable convention and lives at a path its file location mirrors, per the Namespace convention.
- [x] Enabling `modules.toolkit` turns on fish, tmux, nvim, git, and direnv as a group.
- [x] A Host that enables `modules.toolkit` still reads as a flat checklist — the bundle is one line, not a hidden group of five.
- [x] A Host enabling `modules.toolkit` builds via `nix flake check`, and the five underlying Modules are enabled (verifiable by `nix eval` of their `enable` values).
## Implementation Notes
- `modules/toolkit.nix` follows the sanctioned aggregator pattern of `modules/desktop/desktop.nix`: an index node whose `enable` sets each member's `enable = lib.mkDefault true`, so a Host can still override any single piece while the one flag brings up the bundle.
- `neogaia` was converted as the demonstrating Host: its five individual `modules.{fish,git,direnv,tmux,nvim}.enable = true` lines collapse to one `modules.toolkit.enable = true`. The host-specific `modules.fish.defaultShell = true` stays, since it is placement beyond the bundle's baseline enable.
- Verified: `nix flake check` builds `checks.x86_64-linux.neogaia`, and `nix eval` of each of the five members' `enable` on neogaia returns `true`.
- The working tree also carries `.claude/CONTEXT.md`, ADR 0006, and the `guests` spec — planning artifacts for the wider `guests` spec, not this task. They are deliberately left out of this task's commit and staged separately by the broader work.

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hosts/neogaia/default.nix
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# A machine the operator works from, so it admits the workstation keys alone.
modules.ssh.authorizedKeys = config.modules.ssh.workstationKeys;
modules.toolkit.enable = true;
# fish as the login shell.
modules.fish.enable = true;
modules.fish.defaultShell = true;
modules.git.enable = true;
modules.direnv.enable = true;
modules.tmux.enable = true;
modules.nvim.enable = true;
modules.agents.claude-code.enable = true;
modules.agents.tools.gitea-axi.enable = true;
modules.agents.pi.enable = true;

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modules/toolkit.nix Normal file
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{ config, lib, ... }:
# The baseline interactive toolset as one deliberate bundle.
let
cfg = config.modules.toolkit;
in
{
options.modules.toolkit.enable =
lib.mkEnableOption "the baseline interactive environment — fish, tmux, nvim, git, and direnv — as one unit";
# Each piece is turned on at default priority, so a host can still override any one of them.
config = lib.mkIf cfg.enable {
modules.fish.enable = lib.mkDefault true;
modules.tmux.enable = lib.mkDefault true;
modules.nvim.enable = lib.mkDefault true;
modules.git.enable = lib.mkDefault true;
modules.direnv.enable = lib.mkDefault true;
};
}