updated the upper bounds of the .cabal constraints for 'semigroups' package

[kdmadej]

from: "< 0.13" to "< 0.14"

diagrams-core already has "< 0.14" and the "< 0.13" constraint causes some packages to break (i.e. conduit)

[kdmadej]

Actually this seems not to change anything since dual-tree and its dependency monoid-extras both require the semigroups package to be older than 0.13

[byorgey]

Thanks. In fact, through the magic of stackage you can assume that the diagrams team is already aware of such issues with restrictive upper bounds. @jeffreyrosenbluth is going to be working on updating all the upper bounds soon (I think today).

One note, this does not actually "cause conduit to break". semigroups-0.13 was released less than 24 hours ago and you had the bad fortune to install conduit in the window between its release and diagrams being updated. (void does not specify an upper bound on semigroups whereas diagrams does; the reasons for the discrepancy are complicated and still a subject of much debate in the community.) When you then tried to install diagrams, the dependency solver saw that it needed an older version of semigroups, and had to reinstall void built with this older version; this "breaks" conduit because the version of void it was built with will be replaced. A simple fix would be to uninstall conduit, install diagrams, and then reinstall conduit (it will then build conduit against semigroups-0.12). But an even simpler fix is to wait one day until we have updated all the diagrams packages.