Release~0.10 was the first major, public release of this compilation
system.

The announcement (now distributed in \tr{ghc/docs/ANNOUNCE-0.10})
describes the most notable features of this release.  These notes,
therefore, just cover some of the fine points...

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\subsection[0-10-new-docs]{New documentation}
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We're providing a few more papers, in \tr{ghc/docs/papers}.  See
\tr{ghc/docs/README} for a full list of documentation.

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\subsection[0-10-new-in-usage]{User-visible changes}
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An ``Appel-style'' generational garbage collector is now the default.
(It used to be a two-space copying collector.)

The flag to use the unboxery and other Glasgow extensions was
\tr{-funboxed}.  We've changed it to \tr{-fglasgow-exts}.  We may
elaborate this further, eventually...

(If 0.06 is the last version you looked at, flags/options have changed
a fair bit since then.)

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\subsection[0-10-new-in-compiler]{New in the compiler proper}
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Derived instances are in, well partly.  We'll put in the rest when
there's a demand (or we have nothing better to do).

@Integers@ (arbitrary-precision integers) are now in properly.
Just as HBC does, we use the GNU multi-precision arithmetic package.
Source is in \tr{ghc/runtime/gmp}.

We did a bunch of stuff in the typechecker region to support
overloading better; we called it ``dictionary stomping.''  One
side-effect of this work is that error messages related to overloading
have a slight chance of being sensible (which they weren't before).

``Primitive arrays,'' on top of which efficient, regular Haskell
arrays can be (are) built, went in.  There's a {\em little} about
using them, in the ``Glasgow extensions'' section of the User's Guide.

Similarly, the mechanisms for calling C directly (@ccall@ and @casm@)
are more likely to be useful.  Again, a little documentation in the
same place...

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\subsection[0-10-new-in-libraries]{In the prelude and runtime support}
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Our standard prelude conforms to the Haskell~1.2 report.

We support a non-standard @fromInt@ method for the @Num@ class, just as
HBC does.

We support a non-standard @cmp3@ method for the @Ord@ class.  Snoop
around in the \tr{ghc/lib/prelude/*.hs} code, if you care.  (We use it
in code generated for derived instances.)