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Questions tagged [cabal]

Cabal is a package distribution and build system for the Haskell programming language.

Cabal stands for Common Architecture for Building Applications and Libraries. It is a package distribution and build system for the Haskell programming language. It is integrated with Hackage, a central package archive of open-source software written in Haskell. Cabal can refer both to the Cabal library which Setup.hs files can link against in order to build Haskell packages, and the command-line tool, which provides a range of additional functionality, including automatically fetching packages from , solving dependency graphs of version constraints to obtain install plans, managing sandboxed package environments, and much more.

More information about Cabal can be found at the Cabal website.

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How to add a changelog to a Cabal package?

I see that Hackage 2 has a changelog field. This is a feature I've wanted for a long time. But multiple Google searches have failed to find a single shred of documentation about how you populate this field. Does anyone know how to do it?
MathematicalOrchid
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Using text-icu library in Haskell on Mac OS

I am trying to use the text-icu library as a dependency in a cabal package on Mac OS. I have icu installed but when I try to build my package cabal gives me this error: Missing C libraries: icui18n, icudata, icuuc I'm am unsure what debugging…
user945202
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Haskell cabal: I just installed packages, but now the packages are not found

Over here is the only reason I can find that packages I'm installing using cabal are not being found by GHC: This happens when you install a package globally, and the previous packages were installed locally. Note that cabal-install install locally…
jameshfisher
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Cabal install gtk failing

I'm trying to install gtk via cabal, however, I'm getting the following type errors when building it [ 22 of 209] Compiling Graphics.UI.Gtk.Embedding.Plug ( dist/build/Graphics/UI/Gtk/Embedding/Plug.hs, dist/build/Graphics/UI/Gtk/Embedding/Plug.o…
Matt
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Cabal - how to install specific version of package

I need for example a minor version of a package, for example persistent-postgresql .. or hdbc-mysql or whatever. If I run cabal install persistent-postgresql it will install persistent-postgresql version 1.3 and then I get the error 'At least the…
Steffi
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Cabal - Expose all modules while building library

Is it possible to tell Cabal to expose all modules while building a library? Right now I have to provide very long list of modules in the exposed-modules cabal configurtion file section.
Wojciech Danilo
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Current state of integrating unit tests with Haskell's Cabal?

When i google for how to integrate unit tests with cabal files, i either find http://www.haskell.org/haskellwiki/How_to_write_a_Haskell_program which does not seem to describe the integration of HUnit/QuickCheck with the Cabal file or i see…
LennyStackOverflow
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cabal: how to automatically update the build-depends field in the .cabal file?

Is there a way to automatically update the build-depends field in the .cabal-file? For example, if we start with the following .cabal file: name: HUnit version: 1.1.1 synopsis: A unit testing framework for Haskell homepage: …
Marcus Vinícius Monteiro
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Including data files only in cabal test suites

I have some data files that only belong with my test program and would be confusing to distribute with the main library. Unfortunately, the .cabal data-files field only applies to an entire cabal file, not a single section like the test-suite. If I…
Ganesh Sittampalam
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Enable --hyperlink-source for "cabal install"

The command cabal haddock has very useful --hyperlink-source option. I would like to have the source hyperlinked when building documentation with cabal install. The ticket #517 seems to be just about it:…
Tener
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Control.Monad.State found in multiple packages haskell

While evaluating the line "import Control.Monad.State" in a Haskell module, GHC gives me the following error: Could not find module `Control.Monad.State': it was found in multiple packages: monads-fd-0.0.0.1 mtl-1.1.0.2 Failed, modules loaded:…
Bill
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Why are cabal reinstalls "always dangerous"?

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?
pravnar
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Parallel Cabal Builds

Is there a way to compile packages in parallel when using cabal install similar to GNU make's -jN flag?
Nordlöw
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How to completly remove packages installed by cabal?

I am trying to learn cabal, and have tested several my own little projects, now I want to clean them up. Basically, if I am working without a sandbox, my workflow is: run cabal init edit src/Mylib.hs, and then edit mylibname.cabal file run cabal…
Alaya
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Can't compile haskell project: linking step fails

I'm having issues doing a cabal run on my project. This project used to run properly, and I'm not totally sure what change broke it. I think it is related to the issues between GHC 7.6 and OSX Mavericks (I'm using Darin Morrison's homebrew formulae…
benekastah
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