csecp256k1

Haskell FFI bindings to bitcoin-core/secp256k1 (docs.ppad.tech/csecp256k1).
git clone git://git.ppad.tech/csecp256k1.git
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flake.nix (1475B)

      1 {
      2   description = "ppad-csecp256k1";
      3 
      4   inputs = {
      5     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
      6     flake-utils.url = "github:numtide/flake-utils";
      7   };
      8 
      9   outputs = { self, nixpkgs, flake-utils }:
     10     flake-utils.lib.eachDefaultSystem (system:
     11       let
     12         lib = "ppad-csecp256k1";
     13 
     14         pkgs = import nixpkgs { inherit system; };
     15         hlib = pkgs.haskell.lib;
     16 
     17         hpkgs = pkgs.haskell.packages.ghc981.extend (new: old: {
     18           ${lib} = old.callCabal2nix lib ./. {};
     19         });
     20 
     21         cc    = pkgs.stdenv.cc;
     22         ghc   = hpkgs.ghc;
     23         cabal = hpkgs.cabal-install;
     24       in
     25         {
     26           # cabal2nix disables haddock for packages with internal
     27           # dependencies like secp256k1-sys, so enable it manually
     28           packages.default = hlib.doHaddock hpkgs.${lib};
     29 
     30           devShells.default = hpkgs.shellFor {
     31             packages = p: [
     32               (hlib.doBenchmark p.${lib})
     33             ];
     34 
     35             buildInputs = [
     36               cabal
     37               cc
     38             ];
     39 
     40             inputsFrom = builtins.attrValues self.packages.${system};
     41 
     42             doBenchmark = true;
     43 
     44             shellHook = ''
     45               PS1="[${lib}] \w$ "
     46               echo "entering ${system} shell, using"
     47               echo "cc:    $(${cc}/bin/cc --version)"
     48               echo "ghc:   $(${ghc}/bin/ghc --version)"
     49               echo "cabal: $(${cabal}/bin/cabal --version)"
     50             '';
     51           };
     52         }
     53       );
     54 }
     55