implement nix build

default.nix

@@ -0,0 +1,5 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.callPackage ./seqwish.nix {
+  inherit (pkgs) stdenv fetchgit cmake gsl gmp makeWrapper jemalloc htslib git zlib pkg-config;
+}

seqwish.nix

@@ -0,0 +1,39 @@
+{ lib, stdenv, fetchgit, cmake, gsl, gmp, makeWrapper, jemalloc, htslib, git, zlib, pkg-config }:
+
+stdenv.mkDerivation rec {
+  pname = "seqwish";
+  version = "0.7.9";
+
+  src = fetchgit {
+    url = "https://github.com/ekg/seqwish.git";
+    rev = "f44b402f0c2e02988d431d9b2e5eba9727cf93a9";
+    sha256 = "sha256-xEdiDyFwUYOQI7v4WH8Kv3UXQuBLIS3IjQi8Kv2ff9Q=";
+    fetchSubmodules = true;
+  };
+
+  # Add -march=native to the CFLAGS
+  NIX_CFLAGS_COMPILE = "-march=native";
+
+  nativeBuildInputs = [ cmake makeWrapper ];
+
+  buildInputs = [ 
+    gsl 
+    gmp
+    jemalloc
+    htslib
+    git
+    zlib
+    pkg-config
+  ];
+
+  postInstall = ''
+    wrapProgram $out/bin/seqwish --prefix PATH : ${lib.makeBinPath [ gsl gmp ]}
+  '';
+
+  meta = with lib; {
+    description = "alignment to variation graph inducer";
+    homepage = "https://github.com/ekg/seqwish";
+    license = licenses.mit;
+    platforms = platforms.linux;
+  };
+}