rustfmt 1.0 has been released, but requires a more recent rustc.

now that we have a recent enough rustfmt

(partially?) fixes #29951

When generating values for the services.nsd.zones attribute using values
from pkgs, we'll run into an infinite recursion because the nsd module
has a condition on the top-level definition of nixpkgs.config.

While it would work to push the definition a few levels down, it will
still only work if we don't use bind tools for generating zones.

As far as I could see, Python support for BIND seems to be only needed
for the dnssec-* tools, so instead of using nixpkgs.config, we now
directly override pkgs.bind instead of globally in nixpkgs.

To illustrate the problem with a small test case, instantiating the
following Nix expression from the nixpkgs source root will cause the
mentioned infinite recursion:

  (import ./nixos {
    configuration = { lib, pkgs, ... }: {
      services.nsd.enable = true;
      services.nsd.zones = import (pkgs.writeText "foo.nix" ''
        { "foo.".data = "xyz";
          "foo.".dnssec = true;
        }
      '');
    };
  }).vm

With this change, generating zones via import-from-derivation is now
possible again.

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @pngwjpgh

While at it (see previous commit), using attrNames in combination with
length is a bit verbose for checking whether the filtered attribute set
is empty, so let's just compare it against an empty attribute set.

Signed-off-by: aszlig <aszlig@nix.build>

The idea is that we only need this target during boot,
however there is no point on restarting it on every upgrade.

This hopefully fixes #21954

This makes it possible to swap out the (wrapped) neovim without
recompiling neovim-qt. In particular, the user can use `neovim.override`
to configure their neovim and then use that same configuration for
neovim-qt, without having to give up binary caching.

Add submodule from analogdevicesinc

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needs Python 3 to use Clock widget:
qtile/qtile#1258 (comment)

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This can take a long time and should not be necassary anyway.

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This is the last version known to build.

Fixes #53609.

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nixos/systemd-udev-settle: don't restart on upgrades

pdf2djvu: 0.9.11 -> 0.9.12

calibre: 3.36.0 -> 3.37.0

 neovim-qt: wrap in separate derivation

qtbitcointrader: 1.40.30 -> 1.40.40

datadog-agent: 6.4.2 -> 6.8.3

Since `argparse` stopped doing anything a while ago, we'll just patch it
out of setup.py and nobody will notice.

qtile: 0.12.0 -> 0.13.0