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•Created by Guillem on 10/24/2024 in #✋｜help

Use Nix with Node@v20 & [email protected] in nixpacks.toml and railway.toml

Hi! 👋 I'm trying to configure a Node.js project with Nix on Railway. I have both railway.toml and nixpacks.toml files set up, but I'm not sure if I'm correctly defining the Nix config path. Here's my current setup: railway.toml:

[build]
builder = "nixpacks"
nixpacksConfigPath = "nixpacks.toml"
buildCommand = "yarn workspace @my-app build"
watchPatterns = [
    "apps/web/src/**",
    "apps/web/vite.config.mts",
    "packages/**"
]

[deploy]
startCommand = "yarn workspace @my-app preview"
healthcheckPath = "/"
healthcheckTimeout = 180
restartPolicyType = "ON_FAILURE"
restartPolicyMaxRetries = 3

[environments.staging.services.environment]
NODE_ENV = "production"
VITE_DATABASE_NAME = "database_staging"
VITE_DEBUG_ENABLED = "false"
VITE_HOST_NAME = "https://example.com"
VITE_SYNC_URL = "https://sync.example.com"
VITE_SERVER_HOST_NAME = "https://api.example.com"

[environments.staging.variables]
NODE_VERSION = "20"
YARN_VERSION = "4.3.1"

[build]
builder = "nixpacks"
nixpacksConfigPath = "nixpacks.toml"
buildCommand = "yarn workspace @my-app build"
watchPatterns = [
    "apps/web/src/**",
    "apps/web/vite.config.mts",
    "packages/**"
]

[deploy]
startCommand = "yarn workspace @my-app preview"
healthcheckPath = "/"
healthcheckTimeout = 180
restartPolicyType = "ON_FAILURE"
restartPolicyMaxRetries = 3

[environments.staging.services.environment]
NODE_ENV = "production"
VITE_DATABASE_NAME = "database_staging"
VITE_DEBUG_ENABLED = "false"
VITE_HOST_NAME = "https://example.com"
VITE_SYNC_URL = "https://sync.example.com"
VITE_SERVER_HOST_NAME = "https://api.example.com"

[environments.staging.variables]
NODE_VERSION = "20"
YARN_VERSION = "4.3.1"

nixpacks.toml:

[phases.setup]
nixPkgs = ['nodejs@20', 'yarn']

[variables]
NODE_VERSION = "20"
YARN_VERSION = "4.3.1"

[phases.install]
cmds = [
    "corepack enable",
    "corepack prepare [email protected] --activate",
    "yarn install"
]

[phases.build]
cmds = ["yarn workspace @my-app build"]

[phases.setup]
nixPkgs = ['nodejs@20', 'yarn']

[variables]
NODE_VERSION = "20"
YARN_VERSION = "4.3.1"

[phases.install]
cmds = [
    "corepack enable",
    "corepack prepare [email protected] --activate",
    "yarn install"
]

[phases.build]
cmds = ["yarn workspace @my-app build"]

Is this the correct way to specify the Nix configuration path in railway.toml? And is my nixpacks.toml set up correctly for a Node.js/Yarn project? Any guidance would be appreciated! 🙏 --- P.S. I already read https://docs.railway.app/guides/config-as-code

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