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4 <TITLE>Haskell Hierarchical Libraries</TITLE>
8 <H1>Haskell Hierarchical Libraries</H1>
10 <P>The libraries are divided into several <EM>packages</EM>.
11 NOTE: there is not always a clean division between packages in the
12 hierarchy, which means a node and its children might be in
13 different packages. If you're looking for a specific module, try
14 all the packages below.</P>
18 <A HREF="base/index.html"><TT>base</TT></a>
20 the Prelude, and a large collection of useful libraries.
23 <A HREF="haskell98/index.html"><TT>haskell98</TT></a>
25 Haskell 98 and FFI Standard Libraries.
28 <A HREF="network/index.html"><TT>network</TT></a>
30 networking support libraries.
33 <A HREF="haskell-src/index.html"><TT>haskell-src</TT></a>
35 manipulating Haskell source code.
38 <A HREF="readline/index.html"><TT>readline</TT></a>
40 a library for interactively reading input from the console.
43 <A HREF="unix/index.html"><TT>unix</TT></a>
45 supplies POSIX functionality (not all platforms).
49 <A HREF="OpenGL/index.html"><TT>OpenGL</TT></a>
54 <A HREF="GLUT/index.html"><TT>GLUT</TT></a>
56 the OpenGL utility toolkit.
61 <A HREF="ObjectIO/index.html"><TT>ObjectIO</TT></a>
68 <H2>Implementation-specific notes</H2>
71 <DT><A HREF="http://www.haskell.org/ghc/">GHC/GHCi</A></DT>
73 Most of the time, all the packages are available without the
74 need to use any additional command-line options. The only
75 time when this is not the case is when linking a program on the
76 command line, without using the <tt>--make</tt> option: in this
77 case you must list all the packages to link to by adding the
78 <tt>-package</tt> <i>P</i> flag (where <i>P</i> is the package
79 name) to the command line for each package.
80 See the <a href="users_guide/users-guide.html">User's Guide</a>
84 <DT><A HREF="http://www.haskell.org/hugs/">Hugs 98</A></DT>
86 Hugs provides almost all of the modules in the <tt>base</tt> package,
87 all the modules in the
88 <tt>haskell98</tt>, <tt>network</tt> and <tt>haskell-src</tt> packages,
89 and some of those in the <tt>unix</tt> package.
90 These modules are always available, as a single hierarchy;
91 Hugs does not use the package subdivision.
94 <DT><A HREF="http://www.haskell.org/nhc98/">Nhc98</A></DT>
96 To use modules from a package <i>P</i> with Nhc98,
97 add the compile-time option <tt>-package</tt> <i>P</i>.
98 Nhc98 currently provides many of the modules in the
99 <tt>base</tt> package (see the
100 <a href="http://www.haskell.org/nhc98/libraries.html">Nhc98 libraries page</a>