StaticKey (Static Attribute Key)

Definition

StaticKey VarName

Fields

Description

StaticKey is used for bare identifier keys in attribute sets: keys that are valid Nix identifiers (alphanumeric + underscore, not starting with a digit). These are written without quotes.

{ foo = 1; bar = 2; }  -- both are StaticKey

Nix Source ↔ AST

# Nix
{ foo = 1; }

# AST (key part)
{ "tag": "StaticKey", "contents": "foo" }

Rules

• Must be a valid Nix identifier: [a-zA-Z_][a-zA-Z0-9_]*
• Cannot start with a digit
• Cannot contain spaces or special characters (those require DynamicKey)

Related

• DynamicKey: dynamic/computed keys
• VarName: underlying type
• NamedVar: uses AttrPath of KeyName

Nix Library Access

syntax.mkStaticKey "foo"
syntax.mkStaticKey "my_var_123"