{stdenv, fetchurl}:

stdenv.mkDerivation rec {
  pname = "unrar";
  version = "5.8.5";

  src = fetchurl {
    url = "https://www.rarlab.com/rar/unrarsrc-${version}.tar.gz";
    sha256 = "0abvz6vv8kr416fphysfbwgxc6hyf1bpnd0aczfv7j3vc8x949d7";
  };

  postPatch = ''
    substituteInPlace makefile \
      --replace "CXX=" "#CXX=" \
      --replace "STRIP=" "#STRIP=" \
      --replace "AR=" "#AR="
  '';

  buildPhase = ''
    make unrar
    make clean
    make lib
  '';

  installPhase = ''
    install -Dt "$out/bin" unrar

    mkdir -p $out/share/doc/unrar
    cp acknow.txt license.txt \
        $out/share/doc/unrar

    install -Dm755 libunrar.so $out/lib/libunrar.so
    install -D dll.hpp $out/include/unrar/dll.hpp
  '';

  setupHook = ./setup-hook.sh;

  meta = with stdenv.lib; {
    description = "Utility for RAR archives";
    homepage = http://www.rarlab.com/;
    license = licenses.unfreeRedistributable;
    maintainers = [ maintainers.ehmry ];
    platforms = platforms.all;
  };
}

{stdenv, fetchurl}:

stdenv.mkDerivation rec {
  pname = "unrar";
  version = "5.8.5";

  src = fetchurl {
    url = "https://www.rarlab.com/rar/unrarsrc-${version}.tar.gz";
    sha256 = "0abvz6vv8kr416fphysfbwgxc6hyf1bpnd0aczfv7j3vc8x949d7";
  };

  postPatch = ''
    substituteInPlace makefile \
      --replace "CXX=" "#CXX=" \
      --replace "STRIP=" "#STRIP=" \
      --replace "AR=" "#AR="
  '';

  buildPhase = ''
    make unrar
    make clean
    make lib
  '';

  outputs = [ "out" "dev" ];

  installPhase = ''
    install -Dt "$out/bin" unrar

    mkdir -p $out/share/doc/unrar
    cp acknow.txt license.txt \
        $out/share/doc/unrar

    install -Dm755 libunrar.so $out/lib/libunrar.so

    install -Dt $dev/include/unrar/ *.hpp
  '';

  setupHook = ./setup-hook.sh;

  meta = with stdenv.lib; {
    description = "Utility for RAR archives";
    homepage = http://www.rarlab.com/;
    license = licenses.unfreeRedistributable;
    maintainers = [ maintainers.ehmry ];
    platforms = platforms.all;
  };
}

Install all C++ header files into the "dev" output
unrar: Install all C++ header files into the "dev" output

This is e.g. required for the rar2fs build [0], which needs at least
version.hpp, rar.hpp, dllext.hpp, dll.hpp, and headers5.hpp.

At least Gentoo does this as well [1] but most other distributions only
install dll.hpp or no header files at all.

[0]: https://github.com/NixOS/nixpkgs/pull/78189
[1]: https://gitweb.gentoo.org/repo/gentoo.git/tree/app-arch/unrar/unrar-5.8.5.ebuild
