How do you make a Cabal project?

How do you make a Cabal project?

To create a new project using Cabal, you should first be in a specific directory set aside for the project. Then you can use cabal init -n to create a project. This will auto-generate a . cabal file for you with defaults in all the metadata fields.

How do you use Cabal packages?

Installing things

1. find a package you want to install, eg from the Hackage package list or cabal list.
2. update your local list of packages and dependencies, with cabal update.
3. download and install the package with cabal install PACKAGE . Some useful options: –dry-run to see what cabal plans to do (recommended),

What does Cabal install do?

cabal-install: The command-line interface for Cabal and Hackage. The ‘cabal’ command-line program simplifies the process of managing Haskell software by automating the fetching, configuration, compilation and installation of Haskell libraries and programs.

What is Cabal Ubuntu?

Package Description The ‘cabal’ command-line program simplifies the process of managing Haskell software by automating the fetching, configuration, compilation and installation of Haskell libraries and programs.

Does stack use cabal?

Broadly speaking, we can say cabal-install and stack are frontends to Cabal. Both tools make it possible to build Haskell projects whose sets of dependencies might conflict with each other within the confines of a single system.

What is stack yaml?

The stack. yaml file is the project-level configuration, which specifies a particular environment to make a build reproducible, pinning versions of compiler and dependencies. This is usually specified by a resolver (such as lts-11.4 ). stack.

What is stack run?

[ development, mit, program ] [ Propose Tags ] Finds the project root, compiles your code and runs the first or set default executable. It’s a shorthand for stack build && stack run executable , much like cabal run .

How do I run GHCi?

GHCi. GHCi is the interactive interface to GHC. From the command line, enter “ghci” (or “ghci -W”) followed by an optional filename to load. Note: We recommend using “ghci -W”, which tells GHC to output useful warning messages in more situations.

What is stack build?

Stack is a tool to build Haskell projects and manage their dependencies. It uses the Cabal library but with a curated version of the Hackage repository called Stackage. Stack competes against Cabal’s binary cabal-install and has been created as a result of the overall criticism about dependency problems.