Motoko Compiler(moc) version manager

Quick Start

One-time initialization

npx mocv init

Select moc version

npx mocv

Use in GitHub workflows

Simply add this step

- name: Select moc version
  run: npx mocv use 0.9.2

Instead of 0.9.2 you can specify any other moc version or latest

Setup

Install mocv

npm i mocv -g

Set env var DFX_MOC_PATH

This command adds a line to .bashrc to set DFX_MOC_PATH to the current moc version

mocv init

Or you can add by yourself:

Run mocv bin current, copy result and add the line below to your .bashrc

export DFX_MOC_PATH=<result>/moc

Usage

Select moc version

You will be prompted to select one of the available moc versions

mocv

or

mocv use 0.8.4

or

mocv use latest

Done!

Now dfx will use current moc version when you build canisters with dfx build or dfx deploy

Other use cases

If you want to use specific version of moc to deploy a canister:

DFX_MOC_PATH=$(mocv bin 0.8.3)/moc dfx deploy my_canister

Reset

Revert changes made by mocv init

mocv reset