Announce: JustHub Sherkin Release

June 13, 2012

I am pleased to announce the Sherkin release of the JustHub distribution of Haskell for Enterprise Linux and the release of the Hub source code on which the distribution is based to Hackage and GitHub.

The JustHub distribution is distinctive in providing a comprehensive back-catalogue of GHC tool chains (back to 6.10.4) and major Haskell Platform releases (currently back to 2011.2.0.1) as well as the timely appearance of leading edge GHC releases (such as GHC 7.4.2) in addition to the Haskell Platform de jour (2012.2.0.0), all of which can be deployed simultaneously on the same system.

Previous releases of the distribution have been confined to Red Hat Enterprise Linux versions 5 and 6 (and of course CentOS and Scientific Linux); this release expands this coverage to Fedora Linux 16 and 17, which can deployed along side or integrated into Fedora Linux’s excellent native Haskell distribution.

The JustHub distribution is based on the Hub system for sandbox development that allows each work tree to work in its own sandboxed environment with a specific tool chain and a private user-package database. All of the standard Haskell tools inter-operate cleanly and transparently with the sandboxes and operate in the normal way outside of them.

Sandboxed environments (hubs) can be shared between work trees as well as being (re)named, annotated, replicated, swapped, archived, locked and removed. Proper package deletion with the option of garbage collecting orphaned code and documentation is also supported.

If anyone would like to incorporate the hub system into a Haskell distribution or port it to a non-Posix system then they are very welcome to contact me (though be warned: time is tight just now).

Note that while the distro has had plenty of serious usage (funnily enough it is popular with build-bot admins) it has also been recently extended and revised – the software remains in beta testing for now.

For news, documentation, articles, download and installation instructions, links to the repositories and trackers etc., see http://justhub.org.

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