Re: [Haskell-cafe] ANN: th-desugar simplifies Template Haskell processing
For expanding/inlining type synonyms, there is also th-expand-syns ( http://hackage.haskell.org/package/th-expand-syns). /Anders On Mon, Sep 2, 2013 at 3:25 AM, Richard Eisenberg e...@cis.upenn.edu wrote: No, but I agree that this behavior is useful and in the spirit of th-desugar. I can add this to the next version, which should come out in a few days (tomorrow?), because I've noticed a bug with the scoping of as-patterns in let statements. Thanks for the suggestion! Richard On Aug 31, 2013, at 12:06 PM, Sjoerd Visscher wrote: Great package! One question: Do you remove/inline type synonyms? I ask because I just ran into this with some TH code. I'm looking for types that end with - a, but that fails when type synonyms are involved. Sjoerd On Aug 30, 2013, at 2:08 AM, Richard Eisenberg e...@cis.upenn.edu wrote: I've just uploaded my new th-desugar package, which enables easier processing of Template Haskell source syntax by desugaring it into a much simpler core language. The meaning of the code after desugaring is identical to before desugaring, but the syntax is much simpler. To wit, th-desugar simplifies out all of the following constructs: - guarded expressions in both functions and case statements - where declarations - do syntax - list/monad comprehensions - record creation / updates - as patterns - non-trivial patterns in a lambda expression - lambda-case - multi-way if - several more If you are writing a library that manipulates Template Haskell syntax, you may wish to consider if th-desugar will make your job easier by forcing you to consider fewer cases. The one source Haskell construct supported by Template Haskell but not supported by th-desguar is view patterns, mostly because these interact quite non-trivially with pattern binders. It's possible this hole will be closed in a future version. Enjoy! Richard ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] A maintenance command of Haskell cabal packages
https://github.com/creswick/cabal-dev/issues#issue/15 My workaround was to create a link: ln -s ~/Library/Haskell/repo-cache ~/.cabal/packages Cheers, Anders On Apr 1, 2011, at 7:38 AM, Kazu Yamamoto (山本和彦) wrote: Hello, cabal-dev is a wrapper around cabal. It creates the directory cabal-dev in your current directory when you run commands. Yes, I know. But when I typed cabal-devel install on a package directory, nothing happened. Can you give a specific example? Surely *something* happened :) I guess this happens with Haskell Platform for MacOS only. In this environment, .cabal/config specifies as follows: remote-repo-cache: /Users/user/Library/Haskell/repo-cache But cabal-dev refers to /Users/user/.cabal/packages. After cabal-dev update to create it, everything becomes fine to me. Thank you. --Kazu ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Uninstall Haskell Platform on Mac OS X
This is a procedure suggested by Mark Lentczner on the haskell-platform mailing list. It clears out _any_ and _all_ versions of haskell platform, so use with care. /Anders Begin forwarded message: These installers don't attempt to uninstall prior versions, and depending on how your prior versions were installed, they may, or may not, happily co-exist with this installation. I'm interested to hear experience reports of trying these installers both systems both with and without prior Haskell setups. You can probably erase most (all?) traces of a prior Haskell install with this procedure: sudo rm -rf /Library/Frameworks/GHC.framework sudo rm -rf /Library/Frameworks/HaskellPlatform.framework sudo rm -rf /Library/Haskell rm -rf .cabal rm -rf .ghc rm -rf ~/Library/Haskell find /usr/bin /usr/local/bin -type l | \ xargs -If sh -c '/bin/echo -n f /; readlink f' | \ egrep '//Library/(Haskell|Frameworks/(GHC|HaskellPlatform).framework)' | \ cut -f 1 -d ' ' /tmp/hs-bin-links # review /tmp/hs-links sudo rm `cat /tmp/hs-bin-links` On Mar 14, 2011, at 3:48 PM, Jesse Schalken wrote: This leaves the symlinks alex, cabal, cabal.real, cabal.wrap and happy in /usr/bin, and also leaves /Library/Frameworks/HaskellPlatform.framework, and while I can remove those myself how can I be certain there isn't something else left behind? On Tue, Mar 15, 2011 at 1:31 AM, Anders Persson anders.cj.pers...@gmail.com wrote: This is what I do. At a terminal prompt: sudo /Library/Frameworks/GHC.framework/Versions/Current/Tools/Uninstaller sudo rm -r /Library/Haskell Cheers, Anders On Mar 14, 2011, at 3:22 PM, Jesse Schalken wrote: Simple question which an hour of googling and a question on #haskell couldn't satisfy. :( I have installed the Haskell Platform 2011.2.0.0 on Mac OS X 10.6.6. Now how do I uninstall it? Thanks, Jesse ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
