Because of differencies in package versions between my development machine and my provider's server, I have to downgrade packages installed on my computer. In Ubuntu 10.04 LTS default PostgreSQL version is 8.4, but I need 8.3. When I try to install postgresql-8.3 I get error:
Package postgresql-8.3 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package postgresql-8.3 has no installation candidate
So, my first question is: How do I install PostgreSQL 8.3 in Ubuntu 10.04.
And the second question: how do I install PHP 5.2.6, or at least 5.2 in Ubuntu 10.04 (where default version is 5.3.2)?