flake: bump flakes

Flake lock file updates:

• Updated input 'emacs':
    'github:nix-community/emacs-overlay/206e22c6ba3f8cd28649d5360e2838f3bb90aa55' (2022-02-08)
  → 'github:nix-community/emacs-overlay/26aa8eb73f43ae039c2407ff5bc798cad67bf39d' (2022-02-10)
• Updated input 'home/nixpkgs':
    'github:NixOS/nixpkgs/942b0817e898262cc6e3f0a5f706ce09d8f749f1' (2022-02-06)
  → 'github:NixOS/nixpkgs/98bb5b77c8c6666824a4c13d23befa1e07210ef1' (2022-02-09)
• Updated input 'master':
    'github:nixos/nixpkgs/91094c90221b1e8fa354f9a964280408e0c869e1' (2022-02-08)
  → 'github:nixos/nixpkgs/88cf48cc21617a6c818d9fbfab52a7d18ea0ab19' (2022-02-10)
• Updated input 'neovim':
    'github:neovim/neovim/4d5cd3abe059c0bf5f57f368025ace885cc8d6a5?dir=contrib' (2022-02-08)
  → 'github:neovim/neovim/dba1df63595adb2988f5502561b833201b504cc1?dir=contrib' (2022-02-09)
• Updated input 'nix':
    'github:nixos/nix/0b3d8e1a29c02b4599942dc0635e6bf3a5e8b55e' (2022-02-08)
  → 'github:nixos/nix/52f52319ad21bdbd7a33bb85eccc83756648f110' (2022-02-09)
• Updated input 'nixpkgs-f2k':
    'github:fortuneteller2k/nixpkgs-f2k/e28e15e439bdc4baec524d77b7cbd6416c25a75c' (2022-02-08)
  → 'github:fortuneteller2k/nixpkgs-f2k/3834089847e63b9f663829057ce64d39796de37f' (2022-02-10)
• Updated input 'nixpkgs-f2k/eww':
    'github:elkowar/eww/ee07598a039e191239a143407bf934b3781ee675' (2022-02-03)
  → 'github:elkowar/eww/bce4ade6daa1f61c77ef3fa36c1aecf70b0d2391' (2022-02-08)
• Updated input 'nixpkgs-f2k/nixpkgs':
    'github:NixOS/nixpkgs/64a3fb4713aa9b7b04daa0f7cd21819b653ddc9b' (2022-02-08)
  → 'github:NixOS/nixpkgs/88cf48cc21617a6c818d9fbfab52a7d18ea0ab19' (2022-02-10)
• Updated input 'nixpkgs-f2k/nixpkgs-wayland':
    'github:nix-community/nixpkgs-wayland/5bc3788bea118dd5cd9d1d17662c468b7261be66' (2022-02-07)
  → 'github:nix-community/nixpkgs-wayland/184e4a25e5e786b58e5497ba5fa27edb185f2842' (2022-02-09)
• Updated input 'nixpkgs-f2k/nixpkgs-wayland/nixpkgs':
    'github:nixos/nixpkgs/9f697d60e4d9f08eacf549502528bfaed859d33b' (2022-02-05)
  → 'github:nixos/nixpkgs/c5051e2b5fe9fab43a64f0e0d06b62c81a890b90' (2022-02-08)
• Updated input 'nixpkgs-f2k/picom-src':
    'github:yshui/picom/126750f0991caea852b500ea7d20491ce2c168c7' (2022-02-06)
  → 'github:yshui/picom/01649b68b98b990383cbcb52e79d21b7774290f4' (2022-02-08)
• Updated input 'nixpkgs-f2k/river-src':
    'git+https://github.com/ifreund/river.git?ref=master&rev=ca47b8a54ea058ce5d173dce889cae0f769541ff' (2022-02-06)
  → 'git+https://github.com/ifreund/river.git?ref=master&rev=89433073d6572573073b858a6ce2ccf5a6da5624' (2022-02-08)
• Updated input 'nixpkgs-f2k/rust-nightly':
    'github:oxalica/rust-overlay/f70af71ef32b14e33cf9ffa6c28b5fef01d67348' (2022-02-07)
  → 'github:oxalica/rust-overlay/4e444ecc6584a902ad12c23f0c1cbbead9adaf87' (2022-02-09)
• Updated input 'nixpkgs-f2k/xmonad/nixpkgs':
    'github:NixOS/nixpkgs/942b0817e898262cc6e3f0a5f706ce09d8f749f1' (2022-02-06)
  → 'github:NixOS/nixpkgs/98bb5b77c8c6666824a4c13d23befa1e07210ef1' (2022-02-09)
• Updated input 'nixpkgs-f2k/xmonad-contrib/nixpkgs':
    'github:NixOS/nixpkgs/942b0817e898262cc6e3f0a5f706ce09d8f749f1' (2022-02-06)
  → 'github:NixOS/nixpkgs/98bb5b77c8c6666824a4c13d23befa1e07210ef1' (2022-02-09)
• Updated input 'nixpkgs-f2k/xmonad-contrib/xmonad/nixpkgs':
    'github:NixOS/nixpkgs/942b0817e898262cc6e3f0a5f706ce09d8f749f1' (2022-02-06)
  → 'github:NixOS/nixpkgs/98bb5b77c8c6666824a4c13d23befa1e07210ef1' (2022-02-09)
• Updated input 'nixpkgs-wayland':
    'github:nix-community/nixpkgs-wayland/282564a349c2f54f65f3aab0dc05d1bbf605abd3' (2022-02-08)
  → 'github:nix-community/nixpkgs-wayland/184e4a25e5e786b58e5497ba5fa27edb185f2842' (2022-02-09)
• Updated input 'nixpkgs-wayland/nixpkgs':
    'github:nixos/nixpkgs/60c52a73f1d5858020ac4f161cd5bf1c9650f8b8' (2022-02-07)
  → 'github:nixos/nixpkgs/c5051e2b5fe9fab43a64f0e0d06b62c81a890b90' (2022-02-08)
• Updated input 'unstable':
    'github:nixos/nixpkgs/60c52a73f1d5858020ac4f161cd5bf1c9650f8b8' (2022-02-07)
  → 'github:nixos/nixpkgs/c5051e2b5fe9fab43a64f0e0d06b62c81a890b90' (2022-02-08)