Today, GHC 7.8.1 RC2 has been released.
We've closed approximately 45 issues people filed against RC1. Thanks to everyone who has helped out!
There are actually quite a few nice improvements since then, and some stuff we'd like to announce.
iOS cross compiler binaries
This release features iOS cross compiler binaries, courtesy of Luke
Iannini. You can download either
ghc-184.108.40.20640228-i386-apple-ios for the iOS ARM compiler or iOS
To properly use the binary distribution, be sure to carefully read the README! Hopefully this process can be made less tedious in the future.
LZMA support for binary distributions
In my experience, lots of people use the binary distributions of GHC for their provided platform (to set up test environments, or because the version for their OS is out of date), and a smaller download for users always helps.
We're now offering LZMA (
.tar.xz) compressed binary
distributions. On average, these are half the size of their bzip2
counterparts – in some cases even more. The iOS ARM build, for
example, is 125M for LZMA vs 267M for bzip2 – a ratio of greater than
One question now is: with these savings, should we keep supporting
.tar.bzip2 distributions? GHC bindists are rather large –
offers a lot of savings, and is available for every major platform,
although it's not typically standard like bzip. But perhaps it's not
too much of a burden. Please let us know what you think!
(In the future, this will also save considerable space with nightly build infrastructure as well!)
New PPC64 machine
GHC HQ now has a shiny, modern 64-bit POWER7 machine available, courtesy of Gustavo Luiz Duarte. Gustavo is a Fedora PPC64 maintainer, and approached me earlier this year and said he could give us access to a build machine. And now we've got a really nice one! And 7.8.1 works well on it, including dynamic GHCi and shared libraries.
This box is running Fedora 20, has 8 hardware threads split across two cores (one per socket) in a NUMA configuration, and a nice amount of RAM.
Many thanks to Gustavo for letting us use this – and also to OSUOSL, who is hosting it in their data center for us! Hopefully we'll be able to keep supporting this platform (we get a surprising amount of PPC/PPC64 related tickets!)
i386/amd64 Ubuntu PPA
This PPA repository now contains 7.8.1 RC2 binaries, available for
download for both
amd64 on Ubuntu 12.04 Precise. You
should immediately be able to take advantage of these builds in your
.travis.yml to test your packages. Furthermore, the binaries are
separated from other versions and can coexist with existing packages.
To get started, add the PPA and install the 7.8.1 build:
$ sudo add-apt-repository -y ppa:hvr/ghc $ sudo apt-get update $ sudo apt-get install ghc-7.8.1 $ export PATH=/opt/ghc/7.8.1/bin:$PATH $ ghc --version The Glorious Glasgow Haskell Compilation System, version 220.127.116.1140228
This PPA is also integrated into Herbert's multi-ghc-travis
project that I mentioned earlier. Just follow the instructions in the
README.md, and be sure to enable:
.travis.yml. You'll then automatically get build reports
with RC2, and any future updates we push to the PPA (including the
final version of 7.8.1).
For example, lens now builds with GHC 7.8.1!
Hopefully we can provide builds for all supported Ubuntu configurations in the future – not just Precise.
deb.haskell.org for your Debian needs
Currently there aren't 7.8.1 builds yet I'm afraid – but there will be a final version of 7.8.1 available upon release. In the mean time, feel free to use these repositories to test out the latest GHC if you're daring, and report issues to us!
And this leads me to...
Earlier this year, I contacted Rackspace about one of their developer programs. Rackspace is a huge supporter of open source and has some great initiatives to help open source projects. I asked if they could help GHC – we wanted build machines.
Rackspace was extremely kind, and with the help of Jesse Noller, they've provided GHC with a few thousand USD per month in services! This was extremely nice of them, and really blew me away.
Rackspace is what powers http://deb.haskell.org – and not only that. GHC HQ now has machines available solely for testing/build purposes, including many new Windows and Linux instances.
In addition to that, we're using them for
haskell.org too –
including a FreeBSD backup server (to be revamped soon), and the
creation of our new Nagios monitoring infrastructure at
Right now, we've still got budget available to run more services. This
venture is a bit of a joint one between GHC HQ and the current
haskell.org administrators, as we're using it for both of our needs
at the moment.
We're hoping RC2 will be the final RC, and 7.8.1 proper will follow soon. In the mean time, please download the RC and file bugs if anything goes wrong!