I have installed Haskell platform and I wanted to also install EclipseFP. I followed some instructions online and I thought it was done, but when I type any character i get the following message:
configuring because setup_config not present
Resolving dependencies...
Configuring proj1-0.1...
I have no idea what I must do now, but I hope somebody does.
Related
I'm trying to install Haskelly so that I can use VSCode to build and debug Haskell. The issue here is that when I try to install intero, Quick Check and stack-run using the following command:
stack install intero QuickCheck stack-run
I get the following error:
Error: While constructing the build plan, the following exceptions
were encountered:
In the dependencies for stack-run-0.1.1.4:
conduit-1.3.1.1 from stack configuration does not match >1.1 && <1.3 (latest matching version is 1.2.13.1)
conduit-extra-1.3.4 from stack configuration does not match >=1.1 && <1.2 (latest matching version is 1.1.17) needed since stack-run is
a build target.
Some different approaches to resolving this:
Set 'allow-newer: true' in C:\sr\config.yaml to ignore all version
constraints and build anyway.
Recommended action: try adding the following to your extra-deps in
C:\sr\global-project\stack.yaml:
conduit-1.2.13.1#sha256:afd4db7fe66ae7af3d418e1a932384a8dee08df2f6299cca80e53ba964ce1228,4371
conduit-extra-1.1.17#sha256:dfa0d00dc11a8a4c3fdff15374c378ee34c25a2255b52194aa1ea3c1f1a63fd7,4521
Plan construction failed.
Now while it does provide some clues as to what I'm supposed to do, I have no clue what it means to add these things to stack.yaml. I found stack.yaml, and it's just a file that I seemingly can't open or modify. Does anyone know how I can fix this issue?
This is a problem installing stack-run, documented here: https://github.com/yamadapc/stack-run/issues/21.
I solved it by adding the following to my stack.yaml:
extra-deps:
- url: https://github.com/Magicloud/stack-run/archive/master.zip
I have a Haskell desktop application that uses Snap. This application has been building for years now and is an everyday part of our fielded solution. I upgraded to a new development machine some months ago, running Windows 10 with version 7.10.3 of the GHC and 1.22.3.0 of the cabal library with 1.22.4.0 of cabal-install. I have installed version 0.9.8.0 of snap-core and version 0.9.5.1 of snap-server.
When I try and build my application in this environment, it get the following error:
Could not find module `Snap.Internal.Http.Server.Exception'
Perhaps you meant
Snap.Internal.Http.Server.Backend
Snap.Internal.Http.Server.Config
Snap.Internal.Http.Server.Date
I cannot find this module in Hackage. Did something change in Snap since I last built this code? Please, any advice will be appreciated.
Dave
P.S. Here are links to the output of the ghc-pkg list command and to the cabal file for this project.
http://zelda.designacourse.com/dave/ghc-pkg_list.txt
http://zelda.designacourse.com/dave/PreviewWrapper.cabal
With the help of, and gratitude to, epsilonhalbe we found a solution to this problem. I still do not know why the import of Snap.Internal.Http.Server.Exception started to throw an error from the compiler. However, removing that import and adding a type declaration to the variable now allows the code to build without error. i.e. catch ((_ :: IOException) -> return True).
I have decided I would like to contribute to an open source project, so I am attempting to contribute to Banshee media player. I have got the latest commit from GitHub. When I try to compile the code using ./autogen, I get the following error:
configure: error: Package requirements (gstreamer-sharp-1.0 >= 0.99.0) were not met:
No package 'gstreamer-sharp-1.0' found
I have searched for a package containing this dependency using:
apt-cache search gstreamer-sharp-1.0
But it returns nothing. Could somebody explain to me in detail how I can get this dependency? I am on Ubuntu 14.04 if that helps.
Here's the answer: "how to build banshee 2 9 1 on ubuntu 14 04" – user3159253
Thank you very much, I managed to build Banshee using that post. I had to use './autogen.sh --prefix=/usr' to build 'gstreamer-sharp-1.0'. I also had to build 'gudev-sharp-3.0' from source. – user2961850
environment:
ubuntu14.04
haskell platform 2014 2.0.0 (ghc 7.8.3,cabal 1.18.13)
stackage:Stackage build for GHC 7.8 + Haskell Platform, 2014-09-24, exclusive
according to http://www.yesodweb.com/page/quickstart , I ran:
dsu#dsu-G41MT-D3:~$ cabal install alex happy yesod-bin
Resolving dependencies...
Configuring ansi-terminal-0.6.1.1...
Configuring alex-3.1.3...
Downloading unix-time-0.3.4...
Failed to install ansi-terminal-0.6.1.1
Last 10 lines of the build log ( /home/dsu/.cabal/logs/ansi-terminal-0.6.1.1.log ):
Configuring asn1-types-0.2.3...
Configuring auto-update-0.1.1.3...
Failed to install alex-3.1.3
Last 10 lines of the build log ( /home/dsu/.cabal/logs/alex-3.1.3.log ):
Failed to install asn1-types-0.2.3
Configuring base-unicode-symbols-0.2.2.4...
Last 10 lines of the build log ( /home/dsu/.cabal/logs/asn1-types-0.2.3.log ):
Failed to install auto-update-0.1.1.3
Last 10 lines of the build log ( /home/dsu/.cabal/logs/auto-update-0.1.1.3.log ):
Configuring base64-bytestring-1.0.0.1...
Configuring blaze-builder-0.3.3.4...
Failed to install base-unicode-symbols-0.2.2.4
Last 10 lines of the build log ( /home/dsu/.cabal/logs/base-unicode-symbols-0.2.2.4.log ):
Failed to install unix-time-0.3.4
Last 10 lines of the build log ( /home/dsu/.cabal/logs/unix-time-0.3.4.log ):
cabal: /home/dsu/.cabal/logs/unix-time-0.3.4.log: does not exist
It simply says "fail to install" and give no any hints.Why use of stackage still has these problems?
This generic cabal debugging advice usually finds the problem....
Update the cabal database, try again
cabal update
cabal install ....
Try to install the dependency with the problem separately.... Looking above, it seems I see a few lines that start with "Failed to install....", test these separately.
cabal install base-unicode-symbols
Recurse if necessary.
Download the package that fails,
cabal unpack base-unicode-symbols
cd base-unicode-symbols-*
Configure to see if its dependencies are all loaded
cabal configure
If not, recurse into the troubled package.
Try to build the package
cabal build
If it doesn't work, you now have useful error messages. If you can fix the problem, great, else repost the information here.
Install
cabal install
In more drastic cases, you might want to delete (actually, just move it in case you want it back) your ~/.cabal/* contents, or your ~/.ghc/* contents, but leave this as a last resort, because you will have to reinstall all cabal packages. Also, you might want to keep the contents of ~/.cabal/bin/*.
I just updated Stackage Server to use FP Complete's Hackage mirror (which is Amazon S3 powered) instead of Hackage itself. That should make it completely resilient to Hackage downtime. Thanks for raising this issue, we definitely want Stackage to have better uptime guarantees than Hackage.
I've encountered the same problem. I have resolved it by temporarily deleting my HTTP_PROXY environment variable to not have cabal try to connect through an unreachable server.
When retrieving packages with Cabal, I frequently get errors with this message:
user error (Codec.Compression.Zlib:
premature end of compressed stream)
It looks like Cabal is using my Windows Networking proxy settings (for Privoxy).
From digging around Google, Cabal or its libraries appear to have (had) a problem
in this area.
Possible solutions I can see are:
Turn off proxying while using Cabal (not very keen on this one); or
Get a patch and start hacking. I'm hesitant to go down this path,
as I'm a complete Haskell noob and I'm not yet comfortable with Darcs; or
Give it the magic "can I haz no proxy" parameter. Hence the question.
If I'm reading http://darcs.haskell.org/cabal-install/Distribution/Client/HttpUtils.hs correctly, you should be able to set the environment variable HTTP_PROXY to an invalid value (would "" work?) to get it to go direct.
Following #SamB's advice, and experimenting a bit, the solution I am now using is:
export HTTP_PROXY="::"
Here's part of the experimental log:
Try #SamB's solution:
[12:10:35z ~]:export HTTP_PROXY=""
[12:11:47z ~]:set|grep HTTP
HTTP_PROXY=
[12:11:50z ~]:cabal update
Downloading the latest package list from hackage.haskell.org
cabal.exe: connect: failed (Connection refused (WSAECONNREFUSED))
Try a "reasonable person's" solution:
[12:11:54z ~]:export HTTP_PROXY="None"
[12:12:02z ~]:set|grep HTTP
HTTP_PROXY=None
[12:12:04z ~]:cabal update
Downloading the latest package list from hackage.haskell.org
cabal.exe: user error [\]
(openTCPConnection: host lookup failure for "None")
Try an "unreasonable person's" solution:
[12:23:44z ~]:export HTTP_PROXY="::"
[12:24:00z ~]:set|grep HTTP
HTTP_PROXY=::
[12:24:04z ~]:cabal update
Downloading the latest package list from hackage.haskell.org
Warning: invalid http proxy uri: "::"
Warning: proxy uri must be http with a hostname
Warning: ignoring http proxy, trying a direct connection
Note: there is a new version of cabal-install available.
To upgrade, run: cabal install cabal-install
[12:24:34z ~]:
Yay!