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Haskell Hierarchical Libraries

The libraries are divided into several packages.

The libraries are divided into several packages. + NOTE: there is not always a clean division between packages in the + hierarchy, which means a node and its children might be in + different packages. If you're looking for a specific module, try + all the packages below.

GHC/GHCi users note: 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 users note: 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.

- -

- 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). -

+ base +: + the Prelude, and a large collection of useful libraries. +
+ haskell98 +: + Haskell 98 and FFI Standard Libraries. +
+ haskell-src +: + manipulating Haskell source code. +
+ network +: + networking support libraries. +
+ parsec +: + monadic parser combinators. +
+ QuickCheck +: + automatic specification-based testing. +
+ readline +: + a library for interactively reading input from the console. +
+ unix +: + supplies POSIX functionality. +
+ OpenGL +: + 3D rendering. +
+ GLUT +: + the OpenGL utility toolkit. +
+ ObjectIO +: + GUI library. +

+ + +

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 98: + Hugs provides almost all of the modules in the + base package + and all the modules in the + haskell98, + haskell-src, + network, + parsec and + QuickCheck packages. +@unixHTMLStart@ + Most of the modules in the unix + package are supported, too. +@unixHTMLEnd@ +@HOpenGLHTMLStart@ + If the target platform supports OpenGL, the + OpenGL and + GLUT packages are supported too. +@HOpenGLHTMLEnd@ + All those modules are always available, as a single hierarchy; + Hugs does not use the package subdivision. +
Nhc98: + The modules of the haskell98 package are available + without the need to use any additional compile-time options. + To use modules from some other package P with Nhc98, + add the compile-time option -package P. + Nhc98 currently provides many of the modules in the + base package (see the + Nhc98 libraries page + for a list). +