Ok I've found this thread, but not sure if it makes sense in my case. This might work for Dynamic providers, but this is a resource provider with different parameters. My provider is just a wrapper for returning the default AWS one, with some additional custom logic before doing so

export function provider(
  accountName?: AwsSonderAccountName,
  opts?: {
    name?: string;
    args?: aws.ProviderArgs;
    opts?: pulumi.ResourceOptions;
  }
): aws.Provider {
  pulumi.log.info('using custom provider - aws wrapper');
  <... Hiding some custom logic > 
  
  const provider = new aws.Provider(opts?.name ?? accountName, args, resourceOpts);
  return provider;
}

Example usage:

export = async function () {

const opts = {
  provider: utils.aws.provider(),
};

const role = new aws.iam.Role(
    roleName,
    {
      <hiding for simplicity>
    }),
      tags
    },
    opts
  );
}