[NixOS] Remove custom slack derivation

nixos/configuration.nix

@@ -106,7 +106,7 @@ in
     pulseeffects
     quassel
     rxvt_unicode
-    slack-appindicator
+    slack
     simplescreenrecorder
     spotify
     termite

nixos/overlays.nix

@@ -19,7 +19,6 @@ self: super:
   pasystray-appindicator = super.pasystray.overrideAttrs (oldAttrs: rec {
     buildInputs = oldAttrs.buildInputs ++ [self.libappindicator-gtk3];
   });
-  slack-appindicator = self.callPackage ./slack.nix { };
   customizable-notify-osd = super.notify-osd.overrideAttrs (oldAttrs: rec {
     version = "0.9.35+16.04.20160415";
     baseURI = "https://launchpad.net/~leolik/+archive/leolik";

nixos/slack.nix

@@ -1,116 +0,0 @@
-{ darkMode ? false, stdenv, fetchurl, dpkg, makeWrapper , alsaLib, atk, cairo,
-cups, curl, dbus, expat, fontconfig, freetype, glib , gnome2, gtk3, gdk_pixbuf,
-libappindicator-gtk3, libnotify, libxcb, nspr, nss, pango , systemd, xorg,
-at-spi2-atk }:
-
-let
-
-  version = "3.4.0";
-
-  rpath = stdenv.lib.makeLibraryPath [
-    alsaLib
-    at-spi2-atk
-    atk
-    cairo
-    cups
-    curl
-    dbus
-    expat
-    fontconfig
-    freetype
-    glib
-    gnome2.GConf
-    gdk_pixbuf
-    gtk3
-    pango
-    libnotify
-    libxcb
-    libappindicator-gtk3
-    nspr
-    nss
-    stdenv.cc.cc
-    systemd
-
-    xorg.libxkbfile
-    xorg.libX11
-    xorg.libXcomposite
-    xorg.libXcursor
-    xorg.libXdamage
-    xorg.libXext
-    xorg.libXfixes
-    xorg.libXi
-    xorg.libXrandr
-    xorg.libXrender
-    xorg.libXtst
-    xorg.libXScrnSaver
-  ] + ":${stdenv.cc.cc.lib}/lib64";
-
-  src =
-    if stdenv.hostPlatform.system == "x86_64-linux" then
-      fetchurl {
-        url = "https://downloads.slack-edge.com/linux_releases/slack-desktop-${version}-amd64.deb";
-        sha256 = "0ld53gg0dbfpi79lz2sx5br29mlhwkfcypzf3iya4cm75a33hyw5";
-      }
-    else
-      throw "Slack is not supported on ${stdenv.hostPlatform.system}";
-
-in stdenv.mkDerivation {
-  name = "slack-${version}";
-
-  inherit src;
-
-  buildInputs = [
-    dpkg
-    gtk3  # needed for GSETTINGS_SCHEMAS_PATH
-  ];
-
-  nativeBuildInputs = [ makeWrapper ];
-
-  unpackPhase = "true";
-  buildCommand = ''
-    mkdir -p $out
-    dpkg -x $src $out
-    cp -av $out/usr/* $out
-    rm -rf $out/etc $out/usr $out/share/lintian
-
-    # Otherwise it looks "suspicious"
-    chmod -R g-w $out
-
-    for file in $(find $out -type f \( -perm /0111 -o -name \*.so\* \) ); do
-      patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" "$file" || true
-      patchelf --set-rpath ${rpath}:$out/lib/slack $file || true
-    done
-
-    # Replace the broken bin/slack symlink with a startup wrapper
-    rm $out/bin/slack
-    makeWrapper $out/lib/slack/slack $out/bin/slack \
-      --prefix XDG_DATA_DIRS : $GSETTINGS_SCHEMAS_PATH
-
-    # Fix the desktop link
-    substituteInPlace $out/share/applications/slack.desktop \
-      --replace /usr/bin/ $out/bin/ \
-      --replace /usr/share/ $out/share/
-  '' + stdenv.lib.optionalString darkMode ''
-    cat <<EOF >> $out/lib/slack/resources/app.asar.unpacked/src/static/ssb-interop.js
-    document.addEventListener('DOMContentLoaded', function() {
-    let tt__customCss = ".menu ul li a:not(.inline_menu_link) {color: #fff !important;}"
-    $.ajax({
-        url: 'https://cdn.rawgit.com/laCour/slack-night-mode/master/css/raw/black.css',
-        success: function(css) {
-            \$("<style></style>").appendTo('head').html(css + tt__customCss);
-            \$("<style></style>").appendTo('head').html('#reply_container.upload_in_threads .inline_message_input_container {background: padding-box #545454}');
-            \$("<style></style>").appendTo('head').html('.p-channel_sidebar {background: #363636 !important}');
-            \$("<style></style>").appendTo('head').html('#client_body:not(.onboarding):not(.feature_global_nav_layout):before {background: inherit;}');
-        }
-      });
-    });
-    EOF
-  '';
-
-  meta = with stdenv.lib; {
-    description = "Desktop client for Slack";
-    homepage = https://slack.com;
-    license = licenses.unfree;
-    platforms = [ "x86_64-linux" ];
-  };
-}