I'm attempting to deploy a new Ruby on Rails app, which includes a PostgreSQL database. The gemfile includes the PG gem, but Railway is failing to deploy the PG gem. It appears to be looking for a client library:

12 23.61 Installing rails 7.1.3.2

12 23.66 Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

12 23.66

12 23.66 current directory: /usr/local/bundle/ruby/3.1.0/gems/pg-1.5.6/ext

12 23.66 /usr/local/bin/ruby -I /usr/local/lib/ruby/3.1.0 extconf.rb

12 23.66 Calling libpq with GVL unlocked

12 23.66 checking for pg_config… no

12 23.66 checking for libpq per pkg-config… no

12 23.66 Using libpq from

12 23.66 checking for libpq-fe.h… no

12 23.66 Can't find the 'libpq-fe.h header

12 23.66 *

12 23.66

12 23.66 Unable to find PostgreSQL client library.

12 23.66