{ system, pkgs, nixpkgs, hydra, ... }: with pkgs;
let
  hydra-pkg = hydra.defaultPackage.${system};
  rtf-tokenize = with python3Packages; buildPythonPackage rec {
    pname = "rtf_tokenize";
    version = "1.0.0";
    src = fetchFromGitHub {
      owner = "benoit-pierre";
      repo = pname;
      rev = version;
      sha256 = "1l5pfrggil9knk58r2r84i9msm7mdhddl87hkfk54qqk2sqzc06g";
    };
  };
  plover-stroke = with python3Packages; buildPythonPackage rec {
    pname = "plover_stroke";
    version = "1.0.1";
    src = fetchFromGitHub {
      owner = "benoit-pierre";
      repo = pname;
      rev = version;
      sha256 = "15by14gn2grvn7835hcrijfmccy4bqwvbg38rn8fvgyl6n2zhwzn";
    };
  };
  plover = with python3Packages; libsForQt5.mkDerivationWith buildPythonPackage rec {
    pname = "plover-wayland";
    version = "2022-04-03";
    src = fetchFromGitHub {
      owner = "benoit-pierre";
      repo = "plover";
      rev = "9aa7c562ba8c6cf8fdd56b0a8304865cc58bc322";
      sha256 = "0y3mdfqjv3vmv5c0cpvfa2mqdylan44iw1js480sxvklq8sxq6yv";
    };
    postPatch = ''
      sed -i /PyQt5/d setup.cfg
      sed -i 's|/usr/share/wayland|${wayland}/share/wayland|' plover_build_utils/setup.py
      sed -i 's|pywayland==|pywayland>=|' reqs/dist.txt
    '';
    checkInputs = [ pytest mock ];
    propagatedBuildInputs = [
      Babel
      pyqt5
      xlib
      pyserial
      appdirs
      wcwidth
      setuptools
      pywayland
      pkg-config
      plover-stroke
      rtf-tokenize
    ];
    dontWrapQtApps = true;
    preBuild = ''
      export PKG_CONFIG="${pkg-config}/bin/pkg-config"
    '';
    preFixup = ''
      makeWrapperArgs+=("''${qtWrapperArgs[@]}")
    '';
    installCheckPhase = "true";
  };
in
{
  nixpkgs.overlays = [
    (self: prev: {
      hydra-unstable = hydra-pkg.overrideAttrs (old: {
        postPatch = ''
          sed -i 's/totalNarSize > maxOutputSize/false/g' src/hydra-queue-runner/build-remote.cc
        '';
        checkPhase = "true";
        patches = [
          ../../extra/hydra.patch
        ];
      });
      plover.dev = plover;
      mosh = prev.mosh.overrideAttrs (old: {
        patches = [
          ./mosh/ssh_path.patch
          ./mosh/mosh-client_path.patch
          ./mosh/utempter_path.patch
          ./mosh/bash_completion_datadir.patch
        ];
        postPatch = ''
          substituteInPlace scripts/mosh.pl \
            --subst-var-by ssh "${openssh}/bin/ssh" \
            --subst-var-by mosh-client "$out/bin/mosh-client"
        '';
        version = "2022-02-04";
        src = pkgs.fetchFromGitHub {
          owner = "mobile-shell";
          repo = "mosh";
          rev = "dbe419d0e069df3fedc212d456449f64d0280c76";
          sha256 = "09mvk9zxclkf4wrkkfzg0p2hx1f74gpymr0a0l3pckmk6za2n3d1";
        };
      });
      gtk3 = prev.gtk3.overrideAttrs (old: {
        postPatch = old.postPatch + ''
          sed -i 's/gtk_compose_table_save_cache (compose_table);//' gtk/gtkcomposetable.c
        '';
      });
      # remove when matrix-1.58 hits
      matrix-synapse = prev.matrix-synapse.overrideAttrs (old: {
        version = "1.58.0";
        src = pkgs.python3.pkgs.fetchPypi {
          pname = "matrix-synapse";
          version = "1.58.0";
          sha256 = "sha256-cY3rtmaaAimEQPU4wcMEy/QysPNCdk7yptrkctnLfDA=";
        };
      });
    })
  ];
}