Module variable 

Variable system — user-defined variables with {{var_name}} template syntax.

Variables are stored in ~/.mur/variables.yaml and can be referenced in workflow steps, commands, and descriptions using {{variable_name}} syntax.

Variable Resolution Order

1. CLI overrides (--var key=value)
2. Workflow-level defaults (variables: section in workflow YAML)
3. Global variables (~/.mur/variables.yaml)
4. Environment variables ($VAR_NAME → {{VAR_NAME}})

Structs

VariableStore

A collection of user-defined variables, persisted as ~/.mur/variables.yaml.

Functions

collect_workflow_variables

Collect all variable references from a workflow’s steps and descriptions.

extract_variable_names

Extract all {{var}} names from a template string (excluding {{input}}).

parse_var_overrides

Parse CLI --var key=value pairs into a map.

resolve_variables

Resolve all {{var}} placeholders in a template string.

workflow_defaults_map

Build workflow defaults map from a workflow’s variables section.