name:                polysemy
version:             0.7.0.0
github:              "isovector/polysemy"
license:             BSD3
author:              "Sandy Maguire"
maintainer:          "sandy@sandymaguire.me"
copyright:           "2019 Sandy Maguire"

extra-source-files:
- README.md
- ChangeLog.md

synopsis:            Higher-order, low-boilerplate, zero-cost free monads.
category:            Language

description:         Please see the README on GitHub at <https://github.com/isovector/polysemy#readme>

dependencies:
- base >= 4.9 && < 5
- containers >= 0.5 && < 0.7
- mtl >= 2.2.2 && < 3
- syb >= 0.7 && < 0.8
- template-haskell >= 2.12.0.0 && < 3
- th-abstraction >= 0.3.1.0 && < 0.4
- transformers >= 0.5.2.0 && < 0.6
- first-class-families >= 0.5.0.0 && < 0.6
- unagi-chan >= 0.4.0.0 && < 0.5
- async >= 2.2 && < 3
- type-errors >= 0.2.0.0

default-extensions:
  - DataKinds
  - DeriveFunctor
  - FlexibleContexts
  - GADTs
  - LambdaCase
  - PolyKinds
  - RankNTypes
  - ScopedTypeVariables
  - StandaloneDeriving
  - TypeApplications
  - TypeOperators
  - TypeFamilies
  - UnicodeSyntax

when:
  - condition: impl(ghc < 8.6)
    default-extensions:
      - MonadFailDesugaring
      - TypeInType

  - condition: impl(ghc >= 8.7)
    dependencies:
      - loopbreaker >= 0.1 && < 0.2

flags:
  dump-core:
    description: Dump HTML for the core generated by GHC during compilation
    default:     False
    manual:      True
  error-messages:
    description: Provide custom error messages
    default:     True
    manual:      True

library:
  ghc-options: -Wall
  source-dirs: src
  other-modules: Polysemy.Internal.PluginLookup

  when:
    - condition: flag(dump-core)
      dependencies:
        - dump-core
      ghc-options:
        - -fplugin=DumpCore
        - -fplugin-opt=DumpCore:core-html

    - condition: impl(ghc < 8.2.2)
      dependencies:
        - unsupported-ghc-version > 1 && < 1

    # We use this plugin to get to more agressive inlining without need for
    # explicit "loopbreakers" in function definitions all over ther codebase
    # --- sadly it can only work on newer versions of GHC currently
    - condition: impl(ghc >= 8.7)
      ghc-options:
        - -fplugin=Loopbreaker

    - condition: flag(error-messages)
      then:
        # dummy value because cabal is stupid
        cpp-options: -DCABAL_SERIOUSLY_CMON_MATE
      else:
        cpp-options: -DNO_ERROR_MESSAGES

tests:
  polysemy-test:
    main:                Main.hs
    source-dirs:         test
    ghc-options:
    - -threaded
    - -rtsopts
    - -with-rtsopts=-N
    build-tools:
    - hspec-discover >= 2.0
    dependencies:
    - polysemy
    - inspection-testing >= 0.4.2 && < 0.5
    - hspec >= 2.6.0 && < 3
    - doctest >= 0.16.0.1 && < 0.17

benchmarks:
  polysemy-bench:
    source-dirs: bench
    main: countDown.hs
    dependencies:
    - criterion
    - free
    - freer-simple
    - mtl
    - polysemy