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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.

- -

- 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. +
+ 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). +
+ 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, + all the modules in the + haskell98, network and haskell-src packages, + and some of those in the unix package. + These modules are always available, as a single hierarchy; + Hugs does not use the package subdivision. +
Nhc98: + To use modules from a 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). +