Homebrew install specific version of formula? - Stack Overflow

Homebrew install specific version of formula? - Stack Overflow

2) Check, whether the version is available as a tap

Especially for larger software projects, it is very probably that there is a high enough demand for several (potentially API incompatible) major versions of a certain piece of software. As of March 2012, Homebrew 0.9 provides a mechanism for this: brew tap & the homebrew versions repository.

That versions repository may include backports of older versions for several formulae. (Mostly only the large and famous ones, but of course they'll also have several formulae for postgresql.)

brew search postgresql will show you where to look:

$ brew search postgresql  postgresql  homebrew/versions/postgresql8    homebrew/versions/postgresql91  homebrew/versions/postgresql9    homebrew/versions/postgresql92  

We can simply install it by typing

$ brew install homebrew/versions/postgresql8  Cloning into '/usr/local/Library/Taps/homebrew-versions'...  remote: Counting objects: 1563, done.  remote: Compressing objects: 100% (943/943), done.  remote: Total 1563 (delta 864), reused 1272 (delta 620)  Receiving objects: 100% (1563/1563), 422.83 KiB | 339.00 KiB/s, done.  Resolving deltas: 100% (864/864), done.  Checking connectivity... done.  Tapped 125 formula  ==> Downloading http://ftp.postgresql.org/pub/source/v8.4.19/postgresql-8.4.19.tar.bz2

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