nix gluster python scripts packaging

default.nix

with import <nixpkgs> { config = {}; };
callPackage ./glusterfs.nix {}

glusterfs.nix

{stdenv, fetchurl, fuse, bison, flex_2_5_35, openssl, python2, ncurses, readline,
 autoconf, automake, libtool, pkgconfig, zlib, libaio, libxml2, acl, sqlite
 , liburcu, attr, makeWrapper, coreutils, gnused, gnugrep, which, python2Packages
}:
let
  s =
  rec {
    baseName="glusterfs";
    version = "3.10.1";
    name="${baseName}-${version}";
    url="https://github.com/nh2/glusterfs/archive/v3.10.1-runner-log.tar.gz";
    sha256 = "0d0n981vhyrxxwbfkdkbhyswiipa8pipz8j80mbvwb8aiqsk6kqs";
  };
  buildInputs = [
    fuse bison flex_2_5_35 openssl ncurses readline
    autoconf automake libtool pkgconfig zlib libaio libxml2
    acl sqlite liburcu attr makeWrapper
    (python2.withPackages (pkgs: [ pkgs.flask pkgs.requests pkgs.prettytable ]))
    python2
  ];
  # Some of the headers reference acl
  propagatedBuildInputs = [
    acl
  ];
in
stdenv.mkDerivation
rec {
  inherit (s) name version;
  inherit buildInputs propagatedBuildInputs;

  # nativeBuildInputs = [
  #   (python2.withPackages (pkgs: [pkgs.flask])) # works
  # ];

  preConfigure = ''
    ./autogen.sh
    '';

  configureFlags = [
    ''--localstatedir=/var''
    ];

  makeFlags = "DESTDIR=$(out)";

  enableParallelBuilding = true;

  postInstall = ''
    cp -r $out/$out/* $out
    rm -r $out/nix
    wrapProgram $out/sbin/mount.glusterfs --set PATH "${stdenv.lib.makeBinPath [ coreutils gnused attr gnugrep which]}"
    '';

  postFixup = ''
    # Set Python environment for the Python based utilities.
    # (@nh2) I'm not sure if there's a better way to do this, automatically for all of them.
    # Also, this is brittle: If we forget a dependency or gluster adds a new one, things will break deep inside gluster.
    # We should better try to get an explicit list of Python dependencies from gluster and ensure all of them are in the PYTHONPATH of all these python scripts.

    wrapProgram $out/bin/gluster-eventsapi --set PYTHONPATH "$(toPythonPath $out)"
    wrapProgram $out/bin/gluster-mountbroker --set PYTHONPATH "$(toPythonPath $out)"
    wrapProgram $out/bin/gluster-georep-sshkey --set PYTHONPATH "$(toPythonPath $out)"
    wrapProgram $out/bin/glusterfind --set PYTHONPATH "$(toPythonPath $out)"

    wrapProgram $out/libexec/glusterfs/peer_eventsapi.py --set PYTHONPATH "$(toPythonPath $out)"
    wrapProgram $out/libexec/glusterfs/peer_georep-sshkey.py --set PYTHONPATH "$(toPythonPath $out)"
    wrapProgram $out/libexec/glusterfs/peer_mountbroker.py --set PYTHONPATH "$(toPythonPath $out)"

    wrapProgram $out/libexec/glusterfs/glusterfind/changelog.py --set PYTHONPATH "$(toPythonPath $out):$(toPythonPath ${python2Packages.xattr}):$(toPythonPath ${python2Packages.cffi}):$(toPythonPath ${python2Packages.pycparser})"
    wrapProgram $out/libexec/glusterfs/gfind_missing_files/gfid_to_path.py --set PYTHONPATH "$(toPythonPath $out):$(toPythonPath ${python2Packages.xattr}):$(toPythonPath ${python2Packages.cffi}):$(toPythonPath ${python2Packages.pycparser})"

    wrapProgram $out/share/glusterfs/scripts/eventsdash.py --set PYTHONPATH "$(toPythonPath $out)"

    mkdir a
    touch b
    echo b | $out/libexec/glusterfs/gfind_missing_files/gfid_to_path.py a
    '';

  src = fetchurl {
    inherit (s) url sha256;
  };

  meta = {
    inherit (s) version;
    description = "Distributed storage system";
    maintainers = [
      stdenv.lib.maintainers.raskin
    ];
    platforms = with stdenv.lib.platforms;
      linux ++ freebsd;
  };
}