cabal-install

In my particuar case, I have a dependency in my Cabal file on the Haskell package bindings-libzip . In particular, I could accept several different versions of libzip , e.g. bindings-libzip-0.11 or bindings-libzip-0.10 . These in turn have a dependency on the respective native C libzip libraries versions 0.11 and 0.10 . Therefore I have bindings-libzip >= 0.10 < 0.12 in my .cabal file. The Haskell package bindings-libzip-x specifies with PkgConfig-Depends that libzip version x must be present on a client machine. Let's say a downstream user has version 0.10 of libzip installed. However, when

My Linux(redhat6) server has to use http proxy to connect to outside world. While it works for other things like wget, it doesn't work for cabal. cabal update -v3 shows errors like this: 407 - proxy authentication required cabal: Failed to download http://hackage.haskell.org/packages/archive/00-index.tar.gz : ErrorMisc "Unsucessful HTTP code: 407" I tried to change http_proxy environment variable to format like http:// user: passwd at proxy:port, but it doesn't work either. The same problem has been asked here But I'm not allowed use a proxy server like polipo, is there any other way to make

With a clean install of the "Haskell Platform". (OS X Snow-Leopard & Platform 2010.1.0.1), doing this causes simple sequence causes very weird cabal install behaviour: $ cabal install time $ cabal install random $ ghc-pkg list random /Library/Frameworks/GHC.framework/Versions/612/usr/lib/ghc-6.12.1/package.conf.d random-1.0.0.2 /Users/yairc/.ghc/i386-darwin-6.12.1/package.conf.d random-1.0.0.2 random-1.0.0.2 is installed twice in my system. and now doing cabal install random reinstalls random-1.0.0.2 every time. Looks like random depends on time , and cabal wants to reinstall it after there's

I've successfully created a ghc cross compiler, that allows me to compile haskell code for armv6h (raspberry pi in my case) from my x64 linux machine. I've successfully run a hello world program on the raspberry. No I want to build my real app, which has a lot of dependencies on other haskell modules. When I compile for x64 I simply do cabal install dependenciy1 depenency2 ... I know I could make my own programm a cabal-project an automate this step. But that's not the point here. When I try to use the cross-compiler arm-unknown-linux-gnueabi-ghc --make myapp.hs It tells me about modules it

When reinstalling a package using Cabal, one usually sees this warning: Warning: Note that reinstalls are always dangerous. Continuing anyway... What are some of the reasons behind this message? Currently, reinstalling a package means destructively overwriting an already installed package. If that old package has any reverse dependencies on the system, they'll no longer work. To make this less likely, cabal-install checks the package databases it has access to when invoked for such reverse dependencies and lists them. In this situation, it requires --force-reinstalls to continue. But even if

Every time I install a library, cabal tells me to install a new version of cabal-install. Despite the fact that i run (with apparent success) the procedure that list below, the version of cabal-install remains unchanged. Where I am going wrong? (My OS is Window 7 64-bits) My User PATH is C:\Users\Alberto\AppData\Roaming\cabal\bin System variables: CABAL_DIR = C:\Users\Alberto\AppData\Roaming\cabal BEFORE the update C:\Users\Alberto>cabal -V cabal-install version 1.16.0.2 using version 1.16.0 of the Cabal library C:\Users\Alberto>cabal update Downloading the latest package list from hackage

I have a machine that doesn't have internet access at all. I installed the Haskell Platform on it using the installer which I got from another machine through a pendrive. Now I want to install the package repa on my home machine which has no internet access. How should I do that? My home machine is running Linux (Debian) and my office machine is Windows 7. From a machine you can access the internet you can either: Run cabal get pkg-name where pkg-name is the package you want. Go to the package's page on Hackage and on the Downloads section there's a .tar.gz file you can download. After you get

I'm trying to get Cabal to install the haskell-src-meta package, and I'm having difficulty with the template-haskell dependency. The dependencies for haskell-src-meta include both template-haskell >=2.7 && <2.9, template-haskell >=2.4 && <2.7, It so happens that template-haskell versions 2.7 and later will not install on my system, but template-haskell 2.5.0.0 will install. When I'm asking Cabal to install haskell-src-meta , how do I tell it to use template-haskell == 2.5.0.0 ? Here is the full information for cabal info haskell-src-meta on my system: * haskell-src-meta (library) Synopsis:

I first tried to install Hlint. cabal install hlint but then I got the error: cabal: Error: some packages failed to install: cpphs-1.20.2 depends on old-time-1.1.0.3 which failed to install. haskell-src-exts-1.18.2 depends on old-time-1.1.0.3 which failed to install. hlint-1.9.37 depends on old-time-1.1.0.3 which failed to install. old-time-1.1.0.3 failed during the configure step. The exception was: ExitFailure 77 Then I tried to install ghc-mod since I read that hlint is a dependency of that package(?). Thinking that it might resolve the problem. So i did cabal install ghc-mod which gave me