Haskell Hierarchical Libraries

The libraries are divided into several packages:

base

the Prelude, and a large collection of useful libraries.

haskell98

Haskell 98 and FFI Standard Libraries.

network

networking support libraries.

haskell-src

manipulating Haskell source code.

readline

a library for interactively reading input from the console

unix

supplies POSIX functionality (not all platforms).

@HOpenGLHTMLStart@

OpenGL

3D rendering.

GLUT

the OpenGL utility toolkit.

@HOpenGLHTMLEnd@ @ObjectIOHTMLStart@

ObjectIO

GUI library.

@ObjectIOHTMLEnd@

Implementation-specific notes

GHC/GHCi

Most of the time, all the packages are available without the need to use any additional command-line options. The only time when this is not the case is when linking a program on the command line, without using the --make option: in this case you must list all the packages to link to by adding the -package P flag (where P is the package name) to the command line for each package. See the User's Guide for more details.

Hugs

Hugs currently provides modules from the base, haskell98, network and haskell-src packages. These modules are always available, as a single hierarchy; Hugs does not use the package subdivision.