sha256

Pure Haskell SHA-256, HMAC-SHA256 (docs.ppad.tech/sha256).
git clone git://git.ppad.tech/sha256.git
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flake.nix (2084B)

      1 {
      2   description = "Pure Haskell SHA-256 and HMAC-SHA256";
      3 
      4   inputs = {
      5     ppad-nixpkgs = {
      6       type = "git";
      7       url  = "git://git.ppad.tech/nixpkgs.git";
      8       ref  = "master";
      9     };
     10     ppad-base16 = {
     11       type = "git";
     12       url  = "git://git.ppad.tech/base16.git";
     13       ref  = "master";
     14       inputs.ppad-nixpkgs.follows = "ppad-nixpkgs";
     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     flake-utils.lib.eachDefaultSystem (system:
     23       let
     24         lib = "ppad-sha256";
     25 
     26         pkgs  = import nixpkgs { inherit system; };
     27         hlib  = pkgs.haskell.lib;
     28         llvm  = pkgs.llvmPackages_19.llvm;
     29         clang = pkgs.llvmPackages_19.clang;
     30 
     31         base16 = ppad-base16.packages.${system}.default;
     32         base16-llvm =
     33           hlib.addBuildTools
     34             (hlib.enableCabalFlag base16 "llvm")
     35             [ llvm clang ];
     36 
     37         hpkgs = pkgs.haskell.packages.ghc910.extend (new: old: {
     38           ppad-base16 = base16-llvm;
     39           ${lib} = old.callCabal2nixWithOptions lib ./. "--enable-profiling" {
     40             ppad-base16 = new.ppad-base16;
     41           };
     42         });
     43 
     44         cc    = pkgs.stdenv.cc;
     45         ghc   = hpkgs.ghc;
     46         cabal = hpkgs.cabal-install;
     47       in
     48         {
     49           packages.default = hpkgs.${lib};
     50 
     51           devShells.default = hpkgs.shellFor {
     52             packages = p: [
     53               (hlib.doBenchmark p.${lib})
     54             ];
     55 
     56             buildInputs = [
     57               cabal
     58               cc
     59               llvm
     60             ];
     61 
     62             doBenchmark = true;
     63 
     64             shellHook = ''
     65               PS1="[${lib}] \w$ "
     66               echo "entering ${system} shell, using"
     67               echo "cc:    $(${cc}/bin/cc --version)"
     68               echo "ghc:   $(${ghc}/bin/ghc --version)"
     69               echo "cabal: $(${cabal}/bin/cabal --version)"
     70               echo "llc:   $(${llvm}/bin/llc --version | head -2 | tail -1)"
     71             '';
     72           };
     73         }
     74       );
     75 }
     76