using a connection string fails knex-cli

[fl0w]

I might be completely off here; but I'm scratching my head concluding that there's something wrong in the library here.

Using following knexfile does not work for me, prompting Error: There is no pool defined on the current client when running any cli knex command, e.g. knex migrate:latest, or knex seed:run:

exports.development = {
  client: 'pg',
  debug: true,
  connection: process.env.DATABASE_URL,
  pool: {
    min: 0,
    max: 2
  }
}

However, the following works as expected:

exports.development = {
  client: 'pg',
  debug: true,
  connection: {
    host: process.env.DATABASE_HOST,
    user: process.env.DATABASE_USER,
    password: process.env.DATABASE_PASSWORD,
    database: process.env.DATABASE_DATABASE
  },
  pool: {
    min: 0,
    max: 2
  }
}

I haven't had time to investigate this yet.
Tried with knex@0.9.0, and the patched version at git+https://github.com/myndzi/knex#double-release by myndzi.

Maybe I'm doing something stupid that I'm not realising but to me, the docs clearly indicates support for connection urls having following example in the docs:

var pg = require('knex')({
  client: 'pg',
  connection: process.env.PG_CONNECTION_STRING,
  searchPath: 'knex,public'
});

[fl0w]

addendum; This might be tied into #1101?