itksnap.nix

# This is a nix packaging for ITKSnaps
#
# Assumptions:
#    - Itksnaps has been downloaded and untar so that the tee looks as follow
#        tar: /home/userName/itksnaps/itksnap-3.6.0-20170401-Linux-x86_64.tar.gz
#        nix: /home/userName/itksnaps/itksnap.nix
#        binary: /home/userName/itksnaps/itksnap-3.6.0-20170401-Linux-x86_64/bin/itksnap
#        libraries: /home/userName/itksnaps/itksnap-3.6.0-20170401-Linux-x86_64/lib/snap-3.6.0/*
#
#
# How to call it:
#     > cd /home/userName/itksnaps/
#     > nix-build ./itksnap.nix
#     > ./result/bin/itksnap


with import <nixpkgs> {}; with itk;
  
  stdenv.mkDerivation rec {
      name = "itksnaps";
      buildInputs = [ makeWrapper ];
  
      buildPhase = "true";
  
      libPath = lib.makeLibraryPath [  ];
  
      unpackPhase = "true";
  
      installPhase = ''
        mkdir -p $out/bin
        cp ${./itksnap-3.6.0-20170401-Linux-x86_64/bin/itksnap} $out/bin/itksnap
        wrapProgram $out/bin/itksnap \
          --prefix LD_LIBRARY_PATH : "${libPath}"
      '';
  }