Module fragments 

The texts rk depend add serves: one fragment set per manager, and the seed file for a manager the target has no file for.

Every text is an authored file under blocks/, per distribution:a-human-faced-artifact-is-authored-text; each carries RK_DEP_* tokens rendered with a plain replace, never a format, so a ${system} interpolation survives untouched. A fragment describes where it goes in a form a coding agent can apply with no parser: a closed placement vocabulary, a literal anchor substring, and a three-state present from the lexical observation.

Structs

Anchor

Where a fragment goes.

Fragment

One fragment: what to add, where, and whether it is already there.

Tokens

The values a block’s tokens render to. A token whose value is absent is left in place; the matrix selects no block that needs it.

Constants

BLOCK_NAMES

Every depend block, by name.

Functions

block

One authored block, by name; the payload is compiled in, so a missing name is a build defect the tests catch, never a runtime path.

first_found

The first needle the text holds, as the literal a reader can search.

flake_ref

The flake reference for a forge host and path at a tag, where the host has a flake reference type: github: and gitlab:.

fragment

One rendered fragment: no final newline, since a reader places it.

input_binding

The declaration of the flake input named input, in any of its forms — name = { … };, inputs.name.url = "…";, a compact or a quoted binding — as the text of its value.

nix_input_name

A flake input name for a package name: a Nix identifier, derived deterministically.

outputs_argument_present

Whether a flake’s outputs function head names input.

render

Render every token whose value is known, with a plain replace.

seed

One rendered seed file, its final newline kept.