Setting the Node.js Version for Nixpacks Builds
Flightcontrol's default Nixpacks build type uses Node.js 18 by default.
This may not be the version of Node that you use for your own project, so Nixpacks supports setting the Node.js version for your builds.
The supported major versions of Node.js are 14, 16, 18, and 20.
When you use Nixpacks for builds, you can set the major Node version, but not the minor node version. For example, you can set the Node version to 18, but not 18.17.2.
We recommend setting the Node version in your
package.json file, so that it's clear to anyone working on your project what version of Node is required. This also works with other build and continuous integration tools.
To set the Node version in your
package.json file, add the following to the top level of your
Nixpacks will use the major version of Node.js specified in your
The other alternative is to tell the Nixpacks build to use a specific version of Node.js by setting the
NIXPACKS_NODE_VERSION environment variable. Set this environment variable to one of the supported major versions of Node.js (14, 16, 18, or 20).
For example, to use Node.js 20, you would set the
NIXPACKS_NODE_VERSION environment variable to
This alternative is useful if you don't want to modify your application code, but we do recommend setting the version of Node you use in your