Re: ANNOUNCE: GHC version 6.10.1 - EditLine / terminal incompatibility?

On Mon, Nov 10, 2008 at 10:39:42AM -0800, Judah Jacobson wrote:

On Sun, Nov 9, 2008 at 11:03 AM, Don Stewart wrote:

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judah.jacobson:

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Note that haskeline has a lot of dependencies and requires TemplateHaskell and many other language extensions.

I'm also somewhat wary of switching to haskeline in ghc-6.10. I think these issues could be resolved in time for 6.12, though:

haskeline needs /way/ too many extensions for a simple console reader...

Well, even though the external API of a line reader may look simple, under the hood there can be a lot going on

I don't think extensions are an issue for ghci, except for TH (which you say can be replaced). They doesn't even cause extra problems for bootstrapping with other Haskell impls, as it's stage >= 2 only. Extra package dependencies are a pain, but aren't the end of the world. The big thing, in my opinion, is portability - not in the sense of the code compiling, but in the sense of "will the arrow keys Just Work if I run ghci in, say, an rxvt on a Solaris machine"? Although it seems like editline fails this anyway, even for the common case of xterm/Linux. Haskell code would also cause fewer build system headaches than linking to a C library. Thanks Ian