chacha

The ChaCha20 stream cipher (docs.ppad.tech/chacha).
git clone git://git.ppad.tech/chacha.git
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flake.nix (1769B)

      1 {
      2   description = "A pure Haskell ChaCha stream cipher.";
      3 
      4   inputs = {
      5     ppad-base16 = {
      6       type = "git";
      7       url  = "git://git.ppad.tech/base16.git";
      8       ref  = "master";
      9       inputs.ppad-nixpkgs.follows = "ppad-nixpkgs";
     10     };
     11     ppad-nixpkgs = {
     12       type = "git";
     13       url  = "git://git.ppad.tech/nixpkgs.git";
     14       ref  = "master";
     15     };
     16     flake-utils.follows = "ppad-nixpkgs/flake-utils";
     17     nixpkgs.follows = "ppad-nixpkgs/nixpkgs";
     18   };
     19 
     20   outputs = { self, nixpkgs, flake-utils, ppad-nixpkgs
     21             , ppad-base16
     22             }:
     23     flake-utils.lib.eachDefaultSystem (system:
     24       let
     25         lib = "ppad-chacha";
     26 
     27         pkgs = import nixpkgs { inherit system; };
     28         hlib = pkgs.haskell.lib;
     29 
     30         hpkgs = pkgs.haskell.packages.ghc981.extend (new: old: {
     31           ${lib} = old.callCabal2nixWithOptions lib ./. "--enable-profiling" {};
     32           ppad-base16 = ppad-base16.packages.${system}.default;
     33         });
     34 
     35         cc    = pkgs.stdenv.cc;
     36         ghc   = hpkgs.ghc;
     37         cabal = hpkgs.cabal-install;
     38       in
     39         {
     40           packages.default = hpkgs.${lib};
     41 
     42           devShells.default = hpkgs.shellFor {
     43             packages = p: [
     44               (hlib.doBenchmark p.${lib})
     45             ];
     46 
     47             buildInputs = [
     48               cabal
     49               cc
     50             ];
     51 
     52             inputsFrom = builtins.attrValues self.packages.${system};
     53 
     54             doBenchmark = true;
     55 
     56             shellHook = ''
     57               PS1="[${lib}] \w$ "
     58               echo "entering ${system} shell, using"
     59               echo "cc:    $(${cc}/bin/cc --version)"
     60               echo "ghc:   $(${ghc}/bin/ghc --version)"
     61               echo "cabal: $(${cabal}/bin/cabal --version)"
     62             '';
     63           };
     64         }
     65       );
     66 }
     67