Am 17.01.2014 22:57, schrieb Brent Yorgey:
The diagrams team is very pleased to announce the 1.0 release of diagrams [1], a framework and embedded domain-specific language for declarative drawing in Haskell.
When compiling I get: src/Diagrams/TwoD/Layout/Tree.hs:448:26: No instance for (Default (ForceLayoutOpts R2)) arising from a use of `def' Possible fix: add an instance declaration for (Default (ForceLayoutOpts R2)) In the `_forceLayoutOpts' field of a record In the expression: FLTOpts {_forceLayoutOpts = def, _edgeLen = sqrt 2, _springK = 0.05, _staticK = 0.1} In an equation for `def': def = FLTOpts {_forceLayoutOpts = def, _edgeLen = sqrt 2, _springK = 0.05, _staticK = 0.1}