<s>
The	O
York	B-Application
Haskell	I-Application
Compiler	I-Application
(	O
Yhc	B-Application
)	O
is	O
a	O
no	O
longer	O
maintained	O
open	B-Application
source	I-Application
bytecode	O
compiler	B-Language
for	O
the	O
functional	B-Language
programming	I-Language
language	I-Language
Haskell	B-Language
;	O
it	O
primarily	O
targets	O
the	O
Haskell	B-Language
'	O
98	O
standard	O
.	O
</s>
<s>
It	O
is	O
one	O
of	O
the	O
four	O
main	O
Haskell	B-Language
compilers	B-Language
(	O
behind	O
GHC	B-Application
,	O
Hugs	B-Application
and	O
nhc98	O
)	O
.	O
</s>
<s>
Yhc	B-Application
is	O
based	O
on	O
the	O
nhc98	O
Haskell	B-Language
compiler	B-Language
,	O
and	O
is	O
intended	O
eventually	O
to	O
be	O
a	O
more	O
portable	B-Architecture
,	O
cleaner	O
,	O
better	O
performing	O
rewrite	O
of	O
nhc98	O
with	O
more	O
and	O
better	O
features	O
.	O
</s>
<s>
In	O
particular	O
,	O
Yhc	B-Application
features	O
integrated	O
support	O
for	O
,	O
the	O
Haskell	B-Language
tracer	O
.	O
</s>
<s>
The	O
Yhc	B-Application
project	O
uses	O
Darcs	B-Protocol
for	O
version	B-Architecture
control	I-Architecture
.	O
</s>
