forked from GitHub/gf-core
820d2d503f
* In GHC 8.4.1, the operator <> has become a method of the Semigroup class
and is exported from the Prelude. This is unfortunate, since <> is also
exported from the standard library module Text.PrettyPrint, so in any
module that defines a pretty printer, there is likely to be an ambiguity.
This affects ~18 modules in GF. Solution:
import Prelude hiding (<>)
This works also in older versions of GHC, since GHC does't complain if
you hide something that doesn't exists.
* In GHC 8.4.1, Semigroup has become a superclass of Monoid. This means
that anywhere you define an instance of the Monoid class you also have to
define an instance in the Semigroup class.
This affects Data.Binary.Builder in GF. Solution: conditionally define
a Semigroup instance if compiling with base>=4.11 (ghc>=8.4.1)
This is a binding to the new GF runtime in C.
The files are:
PGF2.hsc -- a user API similar to Python and Java APIs
PGF2/FFI.hs -- an internal module with FFI definitions for
-- the relevant C functions
HOW TO COMPILE:
cabal install
HOW TO USE:
- Import PGF to the Haskell program that you're writing.
The Cabal infrastructure will make sure to tell the compiler
where to find the relevant modules. Example:
module Main where
import PGF2
import qualified Data.Map as Map
main = do
pgf <- readPGF "Foo.pgf"
let Just english = Map.lookup "FooEng" (languages pgf)