Merge branch 'master' into staging

* master: (30 commits)
  bitlbee: fix build
  git: 2.17.0 -> 2.17.1
  sc-controller: 0.4.2 -> 0.4.3
  zeroc-ice: fix parallel building
  pythonPackages.bsddb3: fix build after 0fd461d5
  haskellPackages.hlibgit2: fix build after #28029
  gdk-pixbuf: patch library rpath references on darwin
  virtualbox: fix build after #28029
  GHCJS darwin fixes (#41120)
  neovim-remote: 1.8.6 -> 2.0.5
  messenger-for-desktop: remove (#41224)
  typora: gnome2 cleanup (#41167)
  discord: gnome2 cleanup (#41174)
  skypeforlinux: gnome2 cleanup (#41176)
  wire-desktop: gnome2 cleanup (#41155)
  hyper: gnome2 cleanup (#41170)
  drone: 0.5 -> 0.8.5 (#41200)
  racket: use proper uname, allow for unix sockets
  kytea: fix build after #28029
  yoda: fix build after #28029
  ...