Cabal Config constraints vs. constraint

Hey everyone, I am trying to add a list of version constraints to my global cabal config (~/.cabal/config) using the `constraints` keyword. However, after adding the list to the end of the ~/.cabal/config file and running `cabal update`, I noticed this warning: $ cabal update Warning: /home/test/.cabal/config: Unrecognized field constraints on line 176 Downloading the latest package list from hackage.haskell.org I did find this issue annotated as a FIXME in the cabal source: https://github.com/haskell/cabal/blob/64761550bb617ee5d9449512bd3e500489cfd4... It appears as though `constraints` are currently only supported in cabal.config (and maybe cabal.sandbox.config) Do individual constraints (e.g. `constraint:`) have the same effect as a list of constraints? Does the `constraint` setting work in both global (~/.cabal/config) and local cabal.config the exact same way (especially if I have a long list of them) Is there any reason I would use individual constraints over a list of constraints? My assumption is that they work the same way in both ~/.cabal/config && cabal.config. I'm considering patching the cabal source to support the `constraints` setting in the ~/.cabal/config file. Is there any reason this might have been passed up front? More discussion here: https://github.com/fpco/stackage-server/issues/67 Any help or advice would be greatly appreciated. Thanks, -Christopher -- Christopher Reichert irc: creichert gpg: C81D 18C8 862A 3618 1376 FFA5 6BFC A992 9955 929B

On Mon, Dec 22, 2014 at 1:40 PM, Christopher Reichert wrote: Do individual constraints (e.g. `constraint:`) have the same effect as a
list of constraints? Yes; also in cabal files, where that ability is used with conditionals. I
habitually add 'constraint: foo installed' for all global packages to a new
installation's ~/.cabal/config.
--
brandon s allbery kf8nh sine nomine associates
allbery.b@gmail.com ballbery@sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net
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Brandon Allbery
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Christopher Reichert