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>

ops/pipelines/depot.nix

@@ -16,9 +16,10 @@ let
     drvTargets = depot.ci.targets;
     additionalSteps = [ protoCheck ];
 
-    parentTargetMap = if (externalArgs ? parentTargetMap)
+    parentTargetMap =
+      if (externalArgs ? parentTargetMap)
       then builtins.fromJSON (builtins.readFile externalArgs.parentTargetMap)
-      else {};
+      else { };
 
     postBuildSteps = [
       # After successful builds, create a gcroot for builds on canon.
@@ -40,7 +41,8 @@ let
   };
 
   drvmap = depot.nix.buildkite.mkDrvmap depot.ci.targets;
-in pkgs.runCommandNoCC "depot-pipeline" {} ''
+in
+pkgs.runCommandNoCC "depot-pipeline" { } ''
   mkdir $out
   cp -r ${pipeline}/* $out
   cp ${drvmap} $out/drvmap.json