error: azure-native:dbforpostgresql:Server resource 'postgresServer' has a problem: 'version' should be of type 'string' but got a number

What happened?

Deploying a postgresql server where the version number is in a config variable as a string (in quotes) is being returned as a number.

Example

Pulumi.dev.yaml:

config:
  storageSizeGB: 512
  version: '14' | "14"

Pulumi.yaml: version: ${version}

Output of `pulumi about`

CLI Version 3.115.2 Go Version go1.22.2 Go Compiler gc

Plugins KIND NAME VERSION language yaml unknown

Host OS Microsoft Windows 10 Pro Version 10.0.19045 Build 19045 Arch x86_64

This project is written in yaml

Current Stack: bookerdimaio/pu-yaml-az-postgres/dev

TYPE URN pulumi:pulumi:Stack urn:pulumi:dev::pu-yaml-az-postgres::pulumi:pulumi:Stack::pu-yaml-az-postgres-dev pulumi:providers:azure-native urn:pulumi:dev::pu-yaml-az-postgres::pulumi:providers:azure-native::default azure-native:dbforpostgresql:Server urn:pulumi:dev::pu-yaml-az-postgres::azure-native:dbforpostgresql:Server::postgresServer

Found no pending operations associated with dev

Backend Name pulumi.com URL https://app.pulumi.com/bookerdimaio User bookerdimaio Organizations bookerdimaio Token type organization: bookerdimaio Token type pouya-admin

No dependencies found

Pulumi locates its logs in C:\Users\pyous\AppData\Local\Temp by default

Additional context

No response

Contributing

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Thanks for opening the issue and sorry for the trouble!

I was able to reproduce this with the following program and setting the config via pulumi config set version 14:

name: azurenativenum
runtime: yaml
resources:
  resourceGroup:
    type: azure-native:resources:ResourceGroup
  server:
    type: azure-native:dbforpostgresql:Server
    properties:
      resourceGroupName: ${resourceGroup.name}
      version: ${version}

In the meantime, you can workaround by passing the value through fn::toJSON which will cast the number to a string (e.g. fn::toJSON: ${version}):

name: azurenativenum
runtime: yaml
resources:
  resourceGroup:
    type: azure-native:resources:ResourceGroup
  server:
    type: azure-native:dbforpostgresql:Server
    properties:
      resourceGroupName: ${resourceGroup.name}
      version:
        fn::toJSON: ${version}

pulumi / pulumi-yaml