Add cabal file and bump LTS Haskell

.gitignore

@@ -17,4 +17,3 @@ cabal.sandbox.config
 *.hp
 .stack-work
 TAGS
-secp256k1-haskell.cabal

secp256k1-haskell.cabal

@@ -0,0 +1,104 @@
+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.31.2.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 0b75b1185f390c0f03f09dfc8e18349a5bce92770b10888fc121279d4fa9953f
+
+name:           secp256k1-haskell
+version:        0.2.2
+synopsis:       Bindings for secp256k1 library from Bitcoin Core
+description:    Sign and verify signatures using the very fast C secp256k1 library from Pieter Wuille. Has Haskell types and abstractions for keys and signatures.
+category:       Crypto
+homepage:       http://github.com/haskoin/secp256k1-haskell#readme
+bug-reports:    https://github.com/haskoin/secp256k1-haskell.git/issues
+author:         Jean-Pierre Rupp
+maintainer:     jprupp@protonmail.ch
+copyright:      (c) 2017 Jean-Pierre Rupp
+license:        PublicDomain
+license-file:   UNLICENSE
+build-type:     Simple
+extra-source-files:
+    CHANGELOG.md
+    README.md
+
+source-repository head
+  type: git
+  location: https://github.com/haskoin/secp256k1-haskell.git
+
+flag ecdh
+  description: Enable (experimental) ECDH APIs
+  manual: True
+  default: False
+
+flag negate
+  description: Enable tweak negate
+  manual: True
+  default: False
+
+flag recovery
+  description: Enable signature key recovery APIs
+  manual: True
+  default: False
+
+flag schnorr
+  description: Enable BIP-340 (Schnorr) APIs
+  manual: True
+  default: False
+
+library
+  exposed-modules:
+      Crypto.Secp256k1
+      Crypto.Secp256k1.Internal
+  other-modules:
+      Paths_secp256k1_haskell
+  hs-source-dirs:
+      src
+  pkgconfig-depends:
+      libsecp256k1
+  build-depends:
+      QuickCheck
+    , base >=4.8 && <5
+    , base16-bytestring
+    , bytestring
+    , cereal
+    , deepseq
+    , entropy
+    , hashable
+    , string-conversions
+  if flag(ecdh)
+    cpp-options: -DECDH
+  if flag(schnorr)
+    cpp-options: -DSCHNORR
+  if flag(recovery)
+    cpp-options: -DRECOVERY
+  if flag(negate)
+    cpp-options: -DNEGATE
+  default-language: Haskell2010
+
+test-suite spec
+  type: exitcode-stdio-1.0
+  main-is: Spec.hs
+  other-modules:
+      Crypto.Secp256k1.InternalSpec
+      Crypto.Secp256k1Spec
+      Paths_secp256k1_haskell
+  hs-source-dirs:
+      test
+  build-depends:
+      HUnit
+    , QuickCheck
+    , base >=4.8 && <5
+    , base16-bytestring
+    , bytestring
+    , cereal
+    , deepseq
+    , entropy
+    , hashable
+    , hspec
+    , mtl
+    , secp256k1-haskell
+    , string-conversions
+  default-language: Haskell2010
+  build-tool-depends: hspec-discover:hspec-discover

stack.yaml

@@ -1,4 +1,4 @@
-resolver: lts-14.20
+resolver: lts-15.11
 nix:
   packages:
     - secp256k1

stack.yaml.lock

@@ -6,7 +6,7 @@
 packages: []
 snapshots:
 - completed:
-    size: 524154
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/14/20.yaml
-    sha256: 2f5099f69ddb6abfe64400fe1e6a604e8e628f55e6837211cd70a81eb0a8fa4d
-  original: lts-14.20
+    size: 494638
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/15/11.yaml
+    sha256: 5747328cdcbb8fe9c96fc048b5566167c80dd176a41b52d3b363058e3cc1dc5d
+  original: lts-15.11