bech32

Pure Haskell bech32, bech32m encodings (docs.ppad.tech/bech32).
git clone git://git.ppad.tech/bech32.git
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flake.nix (1378B)

      1 {
      2   description = "Pure Haskell bech32m/bech32 encodings.";
      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-bech32";
     13 
     14         pkgs = import nixpkgs { inherit system; };
     15         hlib = pkgs.haskell.lib;
     16 
     17         hpkgs = pkgs.haskell.packages.ghc981.extend (new: old: {
     18           ${lib} = old.callCabal2nixWithOptions lib ./. "--enable-profiling" {};
     19         });
     20 
     21         cc    = pkgs.stdenv.cc;
     22         ghc   = hpkgs.ghc;
     23         cabal = hpkgs.cabal-install;
     24       in
     25         {
     26           packages.default = hpkgs.${lib};
     27 
     28           devShells.default = hpkgs.shellFor {
     29             packages = p: [
     30               (hlib.doBenchmark p.${lib})
     31             ];
     32 
     33             buildInputs = [
     34               cabal
     35               cc
     36             ];
     37 
     38             inputsFrom = builtins.attrValues self.packages.${system};
     39 
     40             doBenchmark = true;
     41 
     42             shellHook = ''
     43               PS1="[${lib}] \w$ "
     44               echo "entering ${system} shell, using"
     45               echo "cc:    $(${cc}/bin/cc --version)"
     46               echo "ghc:   $(${ghc}/bin/ghc --version)"
     47               echo "cabal: $(${cabal}/bin/cabal --version)"
     48             '';
     49           };
     50         }
     51       );
     52 }
     53