style: format entire depot with nixpkgs-fmt

This CL can be used to compare the style of nixpkgs-fmt against other
formatters (nixpkgs, alejandra).

Change-Id: I87c6abff6bcb546b02ead15ad0405f81e01b6d9e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4397
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: wpcarro <wpcarro@gmail.com>
Reviewed-by: Profpatsch <mail@profpatsch.de>
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: cynthia <cynthia@tvl.fyi>
Reviewed-by: edef <edef@edef.eu>
Reviewed-by: eta <tvl@eta.st>
Reviewed-by: grfn <grfn@gws.fyi>

third_party/nixpkgs/default.nix

@@ -6,7 +6,7 @@
 # in //default.nix passes this attribute as the `pkgs` argument to all
 # readTree derivations.
 
-{ depot ? {}, externalArgs ? {}, depotOverlays ? true, ... }:
+{ depot ? { }, externalArgs ? { }, depotOverlays ? true, ... }:
 
 let
   # This provides the sources of nixpkgs. We track both
@@ -42,7 +42,7 @@ let
 
   # Stable package set is imported, but not exposed, to overlay
   # required packages into the unstable set.
-  stableNixpkgs = import stableNixpkgsSrc {};
+  stableNixpkgs = import stableNixpkgsSrc { };
 
   # Overlay for packages that should come from the stable channel
   # instead (e.g. because something is broken in unstable).
@@ -58,7 +58,8 @@ let
     };
   };
 
-in import nixpkgsSrc {
+in
+import nixpkgsSrc {
   # allow users to inject their config into builds (e.g. to test CA derivations)
   config =
     (if externalArgs ? nixpkgsConfig then externalArgs.nixpkgsConfig else { })
@@ -75,5 +76,5 @@ in import nixpkgsSrc {
     depot.third_party.overlays.emacs
     depot.third_party.overlays.tvl
     depot.third_party.overlays.ecl-static
-  ] else []);
+  ] else [ ]);
 }