[Haskell-cafe] hledget: mtv vs transformers
simon at joyful.com
Fri Jan 21 02:37:55 CET 2011
You mean mtl 2.*, right ?
Yes that is a problem. I'm nervous about requiring mtl 2 because when
I bumped hledger 0.13's process dependency to 0.14 for similar reasons
it made all kinds of trouble for folks who just want to install the
hledger core in standard/older haskell environments.
On Jan 20, 2011, at 5:11 PM, Dmitry Astapov wrote:
> Since hledger-chart depends on Chart, which in turn depends on
> transformers 0.2.*, it will make a sense to bump all mtl
> dependencies in hledger to 2.2
> When one does "make install" with older GHC (like 6.12.1, for
> example), and mtl 1.x is available, it would be happily used for
> hledger-lib and hledger, but compilation of hledger-chart will pull
> in transformers 0.2 (but not the newer mtl) and will fail due to
> conflicting instances.
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