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For plugins which are not distributed as native binaries, Qlty supports a variety of Runtimes which are generally virtual machines:
  • Golang
  • Java
  • NodeJS
  • PHP
  • Python
  • Ruby
Qlty is capable of installing packages using the package manager for each runtime (e.g. NPM for NodeJS).

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Runtime versions

By default, Qlty will run the latest version of each runtime that it has been tested against as-needed in order to run plugins. It is also possible to specify the exact version of a Runtime to use with the following syntax:
qlty.toml
# ...

[runtimes.enabled]
python = "3.10.13"

# ...
With this configuration, Qlty will always use Python v3.10.13 when running PIP-based plugins.

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Optional runtime dependencies

The PHP and Ruby runtimes have additional, optional system dependencies. Please see the System Requirements for additional information.