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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