Railway ignore node version value

abeshunyah
PRO

3 months ago

Issue

I cannot set the Node version that Svelte 5 needs.

I see the package.json can tell Railway what version they pick in this forum so i set:

package.json:

{
	"name": "myapp",
	"private": true,
	"version": "0.0.1",
	"type": "module",
	"engines": {
		"node": "20.19.0"
	}
}

Logs

Build fails with this log:

npm error code EBADENGINE
npm error engine Unsupported engine
npm error engine Not compatible with your version of node/npm: myapp
npm error notsup Not compatible with your version of node/npm: myapp
npm error notsup Required: {"node":"20.19.0"}
npm error notsup Actual:   {"npm":"10.8.2","node":"v20.18.1"}

Also another log after i set engines.node as "^20.18.1":

npm error code EBADENGINE
npm error engine Unsupported engine
npm error engine Not compatible with your version of node/npm: @sveltejs/vite-plugin-svelte@6.1.0
npm error notsup Not compatible with your version of node/npm: @sveltejs/vite-plugin-svelte@6.1.0
npm error notsup Required: {"node":"^20.19 || ^22.12 || >=24"}
npm error notsup Actual:   {"npm":"10.8.2","node":"v20.18.1"}

Any LLM could not solve this like 30 minutes battle...

And nothing changes if i set engines.node as "^20.19.0" or "24" or "^24" etc.. Railway always ignore these.

I know Docker works here but i am not familiar at all.
So tell me if I can without Docker.

Solved$10 Bounty

4 Replies

Railway
BOT

3 months ago

Hey there! We've found the following might help you get unblocked faster:

If you find the answer from one of these, please let us know by solving the thread!

-11

abeshunyah
PRO

3 months ago

It is not resolved but Render.com follows package engines.node value and deploy successfully.

and they have mani options to do this.

like this:
https://render.com/docs/node-version

Pls Railway support this. maybe Railway reject minor version of node though i dont know why.

loganbek
FREE

3 months ago

Here’s how I fixed it—no Docker needed, just switch off Nixpacks and let Railpack respect the exact patch version:

  1. Flip the builder to Railpack
    In your Railway project → Settings → Deployment → Builder, change from nixpacks to:

    Railpack will honor your engines.node setting; Nixpacks only ever uses the major version.

  2. Pin the exact Node version in package.json
    At the top level of package.json, add:

    { "engines": { "node": "20.19.0" } }

    (Or whatever exact patch Svelte 5 requires.)

  3. Redeploy
    Just hit Deploy (or push a dummy commit) and you’ll see Railpack installing Node v20.19.0 instead of falling back to v20.18.1

+11

Status changed to Solved brody • 3 months ago

loganbek

Here’s how I fixed it—no Docker needed, just switch off Nixpacks and let Railpack respect the exact patch version:Flip the builder to RailpackIn your Railway project → Settings → Deployment → Builder, change from nixpacks to:railpackRailpack will honor your engines.node setting; Nixpacks only ever uses the major version.Pin the exact Node version in package.jsonAt the top level of package.json, add:{ "engines": { "node": "20.19.0" } }(Or whatever exact patch Svelte 5 requires.)RedeployJust hit Deploy (or push a dummy commit) and you’ll see Railpack installing Node v20.19.0 instead of falling back to v20.18.1

abeshunyah
PRO

3 months ago

It worked!
I did not know Railpack and it respect the exact patch version of Node.
Thank you so much.

how-to screenshot:
https://i.imgur.com/P0QNubo.png

Status changed to Awaiting Railway Response Railway • 3 months ago

Status changed to Solved brody • 3 months ago