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Ryan Yin d7c493f5cd chore(agents): drop the dsh-nu plugin

dsh-nu replaced every shell command with Nushell and refused bash/pwsh
syntax before it spawned; in practice the refusals were too noisy. Drop
the flake input, install plain dsh, and remove the docs describing the
Nushell-only shell.

Assisted-by: DeepSeek Harness (deepseek-flash)

2026-11-05 11:46:03 +08:00

2.8 KiB

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dsh configuration

dsh is installed by this module (packages.nix) and configured at runtime, not by Nix. It boots a profile: an ordered stack of patch layers over an empty root entry list, where later layers win.

#	Layer	Path	Writer
1	bundles	shipped with the profile	upstream
2	profile	`$DSH_HOME/profiles/<name>/cordis.patch.yml`	dsh, at runtime
3	home	`$DSH_HOME/cordis.patch.yml`	you

$DSH_HOME defaults to ~/.dsh. Settings UI changes are written to the profile patch; a home-layer row outranks it, so the UI rejects that setting with Configuration for "..." is overridden by a home patch. This repository ships no home layer: profile patches remain machine-local runtime state, the place for private endpoints (LAN servers, staging gateways) too. Nix installs plain dsh from nur-ryan4yin, with no package wrapper and no --patch overlay.

Three behaviours that are easy to get wrong:

A patch row's config replaces the row's config object instead of deep-merging into it. Repeat every key you mean to keep; the shipped agent-loop row repeats agents: [] for this reason.
The web and desktop surfaces give each agent preset its own compaction service, so a top-level compaction-basic row never reaches a session. Compact by setting the route's model contextWindow and maxTokens instead.
dsh-llm-pi-ai registers its providers once, so mount only one instance: a second one fails with provider "..." is already declared.

To see what your own patches actually change:

dsh <profile> --dump-config          # composed tree with every layer applied
dsh <profile> --dump-default-config  # the same tree without the home layer or --patch overlays

The dsh-base bundle sets agent-default-model to the API-key route (deepseek-official / deepseek-flash). The account route never falls back to an API key, so a host holding only DEEPSEEK_API_KEY fails new sessions with ACCOUNT_SIGN_IN_REQUIRED.

In this repository, just dsh-web boots the web profile through mihomo's mixed port.

Global rules

dsh-base already mounts dsh-agent-instructions (maxBytes: 65536) and rules.nix links agents/global-rules.md into both scopes it reads — $DSH_HOME/AGENTS.md and, from 0.2.1-alpha.2 on, $DSH_AGENTS_HOME/AGENTS.md — so no patch row is needed; identical content renders once.

The scopes come from the environment: 0.2.1-alpha.2 removed the row's dshHome / agentsHome.
Nested AGENTS.md files are discovered by read / write / edit, not by cd inside bash, and nothing is watched: an external edit lands on the next such call, or on resume.

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dsh configuration

Global rules

2.8 KiB

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