# View Source mix evision.fetch(Evision v0.1.21)

This task must only be used by package creators who want to ship the precompiled NIFs. The goal is to download the precompiled packages and generate a checksum to check-in alongside the project in the the Hex repository. This is done by passing the --all flag.
You can also use the --only-local flag to download only the precompiled package for use during development.
You can use the --ignore-unavailable flag to ignore any NIFs that are not available. This is useful when you are developing a new NIF that does not support all platforms.
This task also accept the --print flag to print the checksums.