The LIGO plugin provides tasks to work with LIGO smart contracts such as compiling and testing
- Taqueria v0.42.0 or later
- Node.js v18.18.0 or later
- Docker v20.10.12 or later
To install the LIGO plugin on a Taqueria project, navigate to the project folder and run:
taq install @taqueria/plugin-ligoYou can override the Ligo version used by the plugin by creating the environment variable
TAQ_LIGO_IMAGEand setting it to your desired Ligo Docker image
Basic usage is:
taq compile <contractName>The
compiletask is implemented by more than one compiler plugin (LIGO, Archetype, SmartPy). If more than one of these plugins are installed on a project, you need to use the--plugin ligoflag to specify a particular compiler
The LIGO plugin exposes a compile task in Taqueria which can target one LIGO contract in the contracts folder and compile them to a Michelson .tz file output to the artifacts folder
Our LIGO plugin introduces a smart contract development workflow by means of two simple file naming formats
Suppose you have a contract named hello.mligo and you create a file in the same directory as the contract with the naming format of CONTRACT.storageList.EXT, where CONTRACT is the name of the contract this storage list file is associated with and EXT must match the extension of the associated contract. In our case, the former is hello and the latter is mligo, so it'd be named hello.storageList.mligo
You can define a list of LIGO variables in hello.storageList.mligo in the form of let VARIABLE_NAME: STORAGE_TYPE = EXPRESSION (explicit typing is optional but recommended) and the expressions will be treated as initial storage values for hello.mligo
Note that the form is actually mligo code. Variable definitions in other syntax variants will differ.
Similarly with hello.parameterList.mligo but in the form of let VARIABLE_NAME: PARAMETER_TYPE = EXPRESSION
taq compile hello.storageList.mligo will compile each definition in hello.storageList.mligo and will produce a Michelson .tz file that contains the storage value, as a Michelson expression, for each of them. If the name of a variable is storage1, then its emitted Michelson file will be named hello.storage.storage1.tz. For taq compile hello.parameterList.mligo, the name will be hello.parameter.param1.tz if there's a variable named param1 defined in hello.parameterList.mligo
Furthermore, the first variable definition in hello.storageList.mligo will be treated as the default storage and will produce a Michelson file named hello.default_storage.tz instead. The deploy task from the Taquito plugin will take advantage of this. Go to that plugin documentation to learn how
Lastly, taq compile hello.mligo will compile hello.mligo and emit hello.tz. Then it'll look for hello.storageList.mligo and hello.parameterList.mligo and compile them too if they are found
The --json flag will make the task emit JSON-encoded Michelson instead of pure Michelson .tz
Basic usage is:
taq compile-allIt works just like the compile task but it compiles all main contracts, a.k.a contracts with a main function.
Basic usage is:
taq test <fileName>This task tests the LIGO source code and reports either a failure or success. Normally you'd have a contract file and a separate test file that includes the contract's code, both within the contracts directory
For example, refer to the following 2 code snippets:
type storage = int
type parameter =
Increment of int
| Decrement of int
| Reset
type return = operation list * storage
// Two entrypoints
let add (store, delta : storage * int) : storage = store + delta
let sub (store, delta : storage * int) : storage = store - delta
(* Main access point that dispatches to the entrypoints according to
the smart contract parameter. *)
let main (action, store : parameter * storage) : return =
([] : operation list), // No operations
(match action with
Increment (n) -> add (store, n)
| Decrement (n) -> sub (store, n)
| Reset -> 0)#include "counter.mligo"
let initial_storage = 42
let test_initial_storage =
let (taddr, _, _) = Test.originate main initial_storage 0tez in
assert (Test.get_storage taddr = initial_storage)
let test_increment =
let (taddr, _, _) = Test.originate main initial_storage 0tez in
let contr = Test.to_contract taddr in
let _ = Test.transfer_to_contract_exn contr (Increment 1) 1mutez in
assert (Test.get_storage taddr = initial_storage + 1)By running taq test testCounter.mligo, you should get the following:
┌───────────────────┬──────────────────────────────────────────────┐
│ Contract │ Test Results │
├───────────────────┼──────────────────────────────────────────────┤
│ testCounter.mligo │ Everything at the top-level was executed. │
│ │ - test_initial_storage exited with value (). │
│ │ - test_increment exited with value (). │
│ │ │
│ │ 🎉 All tests passed 🎉 │
└───────────────────┴──────────────────────────────────────────────┘
Basic usage is:
taq ligo --command <command to pass to the underlying LIGO binary>Wrap the value for the --command flag with quotes.
This task allows you to run arbitrary LIGO native commands, but they might not benefit from the abstractions provided by Taqueria
The LIGO plugin also exposes a contract template via the taq create contract <contractName> task. This task will create a new LIGO contract in the contracts directory and insert some boilerplate LIGO contract code
The create contract task is used to create a new LIGO contract from a template. Running this task will create a new LIGO smart contract in the contracts directory and insert boilerplate contract code
taq create contract <contractName>The create contract task takes a filename a required positional argument. The filename must end with a LIGO extension (.jsligo, .mligo, etc)
This is a plugin developed for Taqueria built on NodeJS using the Taqueria Node SDK and distributed via NPM
Docker is used under the hood to provide a self contained environment for LIGO to prevent the need for it to be installed on the user's local machine