Tier 2 · Declarative tags.scm

Nix

Declarative tree-sitter query plugin powered by QueryLanguagePlugin (rgctl-lang-runtime) and crates/rgctl-lang-nix/queries/tags.scm. Compiles once at startup, validates captures against the Tier-2 vocabulary gate, and extracts symbols, container hierarchy (Container::member), imports, and call edges.

Grammar Crate: tree-sitter-nix
Plugin: QueryLanguagePlugin (rgctl-lang-nix)
Extensions: .nix
Discover: rgctl discover . -l nix
Function Kinds: function_expression
Class / Container Kinds: —

Capture summary

Capture	Patterns	Graph mapping
@definition.function	1	Emits SymbolType::Function (acts as caller scope & container).
@name	2	Symbol identifier or target callee/type name.
@reference.call	1	Emits RelationType::Calls from innermost enclosing function to @name.

Query source (`crates/rgctl-lang-nix/queries/tags.scm`)

; Tier-2 Nix tags for rgctl (`handler = "queries"`).

(binding
  attrpath: (attrpath attr: (identifier) @name)
  expression: (function_expression)) @definition.function

(apply_expression
  function: (variable_expression name: (identifier) @name)) @reference.call

Nix

Capture summary

Query source (crates/rgctl-lang-nix/queries/tags.scm)

Query source (`crates/rgctl-lang-nix/queries/tags.scm`)