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	     The Glasgow Haskell Compiler -- version 2.01
	     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We are proud to announce the first public release of the Glasgow
Haskell Compiler (GHC) for the revised Haskell 1.3 language. Sources
and binaries are freely available by anonymous FTP and on the
World-Wide Web; details below.

GHC 2.01 is a test-quality release, worth trying if you are a gung-ho
Haskell user or if you want to ensure that we quickly fix bugs that
affect your programs :-) We advise *AGAINST* deleting your copy of
that old workhorse GHC 0.26 (for Haskell 1.2), and *AGAINST* relying
on this compiler (2.01) in any way.  With your help in testing 2.01,
we hope to release a more solid Haskell 1.3 compiler relatively soon.

Haskell is "the" standard lazy functional programming language [see
SIGPLAN Notices, May 1992].  The current language version is 1.3,
agreed in May, 1996.

The Glasgow Haskell project seeks to bring the power and elegance of
functional programming to bear on real-world problems.  To that end,
GHC lets you call C (including cross-system garbage collection),
provides good profiling tools, supports ever richer I/O, and
concurrency and parallelism.  Our goal is to make it the "tool of
choice for real-world applications".

GHC 2.01 is quite different from 0.26 (July 1995), as the new version
number suggests.  (The 1.xx numbers are reserved for any Haskell-1.2
compiler releases.)  Changes worth noting include:

.......

  * Concurrent Haskell: with this, you can build programs out of many
    I/O-performing, interacting `threads'.  We have a draft paper
    about Concurrent Haskell, and our forthcoming Haggis GUI toolkit
    uses it.

  * Parallel Haskell, running on top of PVM (Parallel Virtual Machine)
    and hence portable to pretty much any parallel architecture,
    whether shared memory or distributed memory.  With this, your
    Haskell program runs on multiple processors, guided by `par` and
    `seq` annotations.  The first pretty-much-everyone-can-try-it
    parallel functional programming system!  NB: The parallel stuff is
    "research-tool quality"... consider this an alpha release.

  * "Foldr/build" deforestation (by Andy Gill) is in, as are
    "SPECIALIZE instance" pragmas (by Patrick Sansom).

  * The LibPosix library provides an even richer I/O interface than
    the standard 1.3 I/O library.  A program like a shell or an FTP
    client can be written in Haskell -- examples included.

  * Yet more cool libraries: Readline (GNU command-line editing),
    Socket (BSD sockets), Regex and MatchPS (GNU regular expressions).
    By Darren Moffat and Sigbjorn Finne.

  * New ports -- Linux (a.out) and MIPS (Silicon Graphics).

  * NB: configuration has changed yet again -- for the better, of
    course :-)

Please see the release notes for a complete discussion of What's New.

To run this release, you need a machine with 16+MB memory, GNU C
(`gcc'), and `perl'.  We have seen GHC 0.26 work on these platforms:
alpha-dec-osf2, hppa1.1-hp-hpux9, i386-unknown-linuxaout,
m68k-sun-sunos4, mips-sgi-irix5, and sparc-sun-{sunos4,solaris2}.
Similar platforms should work with minimal hacking effort.
The installer's guide give a full what-ports-work report.

Binaries are now distributed in `bundles', e.g. a "profiling bundle"
or a "concurrency bundle" for your platform.  Just grab the ones you
need.

Once you have the distribution, please follow the pointers in
ghc/README to find all of the documentation about this release.  NB:
preserve modification times when un-tarring the files (no `m' option
for tar, please)!

We run mailing lists for GHC users and bug reports; to subscribe, send
mail to glasgow-haskell-{users,bugs}-request@dcs.glasgow.ac.uk.
Please send bug reports to glasgow-haskell-bugs.

Particular thanks to: Jim Mattson (author of much of the code) who has
now moved to HP in California; and the Turing Institute who donated a
lot of SGI cycles for the SGI port.

Simon Peyton Jones and Will Partain

Dated: 95/07/24

Relevant URLs on the World-Wide Web:

GHC home page    	  http://www.dcs.glasgow.ac.uk/fp/software/ghc.html
Glasgow FP group page     http://www.dcs.glasgow.ac.uk/fp/
comp.lang.functional FAQ  http://www.cs.nott.ac.uk/Department/Staff/mpj/faq.html

======================================================================
How to get GHC 0.26:

This release is available by anonymous FTP from the main Haskell
archive sites, in the directory pub/haskell/glasgow:

	ftp.dcs.glasgow.ac.uk  (130.209.240.50)
	ftp.cs.chalmers.se     (129.16.227.140)
	haskell.cs.yale.edu    (128.36.11.43)

The Glasgow site is mirrored by src.doc.ic.ac.uk (146.169.43.1), in
computing/programming/languages/haskell/glasgow.

These are the available files (.gz files are gzipped) -- some are `on
demand', ask if you don't see them:

ghc-0.26-src.tar.gz	The source distribution; about 3MB.

ghc-0.26.ANNOUNCE	This file.

ghc-0.26.{README,RELEASE-NOTES} From the distribution; for those who
			want to peek before FTPing...

ghc-0.26-ps-docs.tar.gz	Main GHC documents in PostScript format; in
			case your TeX setup doesn't agree with our
			DVI files...

ghc-0.26-<platform>.tar.gz Basic binary distribution for a particular
			<platform>.  Unpack and go: you can compile
			and run Haskell programs with nothing but one
			of these files.  NB: does *not* include
			profiling (see below).

	<platform> ==>	alpha-dec-osf2
			hppa1.1-hp-hpux9
			i386-unknown-linuxaout
			i386-unknown-solaris2
			m68k-sun-sunos4
			mips-sgi-irix5
			sparc-sun-sunos4
			sparc-sun-solaris2

ghc-0.26-<bundle>-<platform>.tar.gz

	<platform> ==>	as above
	<bundle>   ==>  prof (profiling)
			conc (concurrent Haskell)
			par  (parallel)
			gran (GranSim parallel simulator)
			ticky (`ticky-ticky' counts -- for implementors)
			prof-conc (profiling for "conc[urrent]")
			prof-ticky (ticky for "conc[urrent]")

ghc-0.26-hc-files.tar.gz Basic set of intermediate C (.hc) files for the
			 compiler proper, the prelude, and `Hello,
			 world'.  Used for bootstrapping the system.
			 About 4MB.

ghc-0.26-<bundle>-hc-files.tar.gz Further sets of .hc files, for
			building other "bundles", e.g., profiling.

ghc-0.26-hi-files-<blah>.tar.gz Sometimes it's more convenient to
			use a different set of interface files than
			the ones in *-src.tar.gz.  (The installation
			guide will advise you of this.)

We could provide diffs from previous versions of GHC, should you
require them.  A full set would be very large (7MB).