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>

nix/writeElispBin/default.nix

@@ -1,6 +1,6 @@
 { depot, pkgs, ... }:
 
-{ name, src, deps ? (_: []), emacs ? pkgs.emacs27-nox }:
+{ name, src, deps ? (_: [ ]), emacs ? pkgs.emacs27-nox }:
 
 let
   inherit (pkgs) emacsPackages emacsPackagesGen;
@@ -8,11 +8,13 @@ let
 
   finalEmacs = (emacsPackagesGen emacs).emacsWithPackages deps;
 
-  srcFile = if isString src
+  srcFile =
+    if isString src
     then toFile "${name}.el" src
     else src;
 
-in depot.nix.writeScriptBin name ''
+in
+depot.nix.writeScriptBin name ''
   #!/bin/sh
   ${finalEmacs}/bin/emacs --batch --no-site-file --script ${srcFile} $@
 ''