Neil Mitchell's Blog (Haskell etc)

Haskell represents both a language and a user community - and moreover a fantastic community full of friends, fun, and deep technical debate...

Update: I no longer work for Barclays and am no longer hiring. Summary: I'm hiring 9 Haskell programmers. Email neil.d.mitchell AT bar...

Summary: Last year I made a list of four flaws with Haskell. Most have improved significantly over the last year. No language/compiler ecosy...

Summary: I'm giving a talk on Shake. I'm delighted to announce that I'll be giving a talk/hack session on Shake as part of the...

Summary: I'm looking for a maintainer to take over Derive. Interested? The Derive tool is a library and set of definitions for generati...

Summary: Stack originally used Shake. Now it doesn't. There are reasons for that. The Stack tool originally used the Shake build system...

Summary: Alex and Happy had three space leaks, now fixed. Using the techniques described in my previous blog post I checked happy and alex...

The js-jquery Haskell library bundles the minified jQuery Javascript code into a Haskell package, so it can be depended upon by Cabal pac...

Summary: QuickCheck had a space leak in property , now fixed (in HEAD). Using the techniques described in my previous blog post I found an...

Summary: The new version of Shake supports ** patterns for directory wildcards. I've just released Shake 0.15.6 . Don't be mislead ...

Summary: I've released a new version of GHCid, which can interrupt running tests. I've just released version 0.6.1 of GHCid . To a f...

For a while I've been looking for something to download the GitHub issues for a project. I do a lot of development work on a train with...

Summary: How to compile GHC on Windows using Stack and the new Shake-based GHC build system. Regularly updated instructions are at https://g...

Summary: A Haskell sales pitch without any code. I often find myself in a pub, without pen or paper, trying to persuade someone to try Haske...

Summary: In the new version of HLint, errors are warnings and warnings are suggestions. I plan to remove the old API very soon. I've jus...

I've been a fan of the idea of meal replacement products for a while - the Matrix gruel always seemed simple and appealing. One such p...

Summary: An example of a small function I recently wrote - from type signature to tests. When writing a build system there are lots of nast...

The GCHQ 2015 Christmas puzzle is a Nonogram puzzle, which involves filling in squares on a grid to reveal a picture, guided by constraint...

Summary: The MinGHC project has now finished. The MinGHC project was started to produce a minimal Windows installer which didn't contai...

Summary: Stackage LTS is mostly pointless. Stackage provides a set of precise versions of a subset of Hackage which all place nicely toget...