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dependency-install

A deny rule by default: it refuses a raw package install that the cached install target already runs, and names what to run instead.

What it catches

A raw package install that the cached install target already runs.

Default and override

By default this rule takes the decision deny. A workspace sets it by name, in its root magusfile, to deny, advise or off:

magus\guard.builtins({"dependency-install": "advise"})

A loosening takes effect once it is committed; a tightening applies at once.

Seeing it

A verdict names its rule in brackets, which is how you got here:

deny [dependency-install]: ...

A workspace that sets this rule to advise sees advise [dependency-install]: ... instead.

magus describe rule dependency-install prints the same entry at a terminal, and magus describe rules lists every rule this workspace enforces.

See also

ReferencePages in this section. human-only: a magus run reaching a human_only target: the person is asked, a leased worker refusedA deny rule by default: it refuses a magus run reaching a human_only target: the person is asked, a leased worker refused, and names what to run instead. raw-tool: a toolchain command a spell already wraps, run outside the cacheA deny rule by default: it refuses a toolchain command a spell already wraps, run outside the cache, and names what to run instead. worker-check-only: a bound worker running other than its check or a writer of its write paths, or writing past themA deny rule by default: it refuses a bound worker running other than its check or a writer of its write paths, or writing past them, and names what to run instead.
guardrulesdependency-installdeny
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Glossary

Workspace

The magus root directory that owns a set of projects and shared config; the unit magus operates over. Workspace in full.

Magusfile

The magusfile.buzz that declares a project's targets (as export funs) and binds its spells. Magusfile in full.

Target

A named operation (build, test, ...) you invoke with magus run <target>; it may compose a spell's tool-native operations and depend on other targets. Target in full.

Buzz

The language magusfiles are written in (the .buzz engine). Buzz in full.

Cache

The content-addressed store magus consults before running a target, so unchanged work is skipped. Cache in full.

CI

An ordinary target you compose yourself with ctx.needs; magus does not hardcode its stages. It is the anchor magus affected ci keys off, and ci strips the rw charm. CI in full.

Agent

A model working through an agent host such as Claude Code, Codex, Cursor or OpenCode. magus treats an agent as one more caller of its CLI, MCP tools and console, held to the same checks as a person. Agent in full.

Run

One target executing under one magus invocation, such as magus run test web or magus affected ci. A run keeps its captured output behind an output reference. Every magus run is a run whether or not any job asked for it; see Job for how the two relate. Run in full.

Conventions

This page uses none of the site's convention markers. The full set is on the conventions page.