flake.nix: format with nixpkgs-fmt

flake.nix

@@ -16,7 +16,8 @@
       # NixOS configuration used for VM tests.
       hydraServer =
         { config, pkgs, ... }:
-        { imports = [ self.nixosModules.hydraTest ];
+        {
+          imports = [ self.nixosModules.hydraTest ];
 
           virtualisation.memorySize = 1024;
           virtualisation.writableStore = true;
@@ -30,7 +31,8 @@
           };
         };
 
-    in rec {
+    in
+    rec {
 
       # A Nixpkgs overlay that provides a 'hydra' package.
       overlay = final: prev: {
@@ -522,16 +524,36 @@
               ];
           };
 
-        in stdenv.mkDerivation {
+        in
+        stdenv.mkDerivation {
 
           name = "hydra-${version}";
 
           src = self;
 
           buildInputs =
-            [ makeWrapper autoconf automake libtool unzip nukeReferences pkgconfig libpqxx
+            [
-              gitAndTools.topGit mercurial darcs subversion breezy openssl bzip2 libxslt
+              makeWrapper
-              final.nix perlDeps perl mdbook pixz
+              autoconf
+              automake
+              libtool
+              unzip
+              nukeReferences
+              pkgconfig
+              libpqxx
+              gitAndTools.topGit
+              mercurial
+              darcs
+              subversion
+              breezy
+              openssl
+              bzip2
+              libxslt
+              final.nix
+              perlDeps
+              perl
+              mdbook
+              pixz
               boost
               postgresql_13
               (if lib.versionAtLeast lib.version "20.03pre"
@@ -540,13 +562,34 @@
             ];
 
           checkInputs = [
-            foreman python3 netcat-openbsd glibcLocales cacert
+            cacert
+            foreman
+            glibcLocales
+            netcat-openbsd
+            python3
           ];
 
           hydraPath = lib.makeBinPath (
-            [ subversion openssh final.nix coreutils findutils pixz
+            [
-              gzip bzip2 lzma gnutar unzip git gitAndTools.topGit mercurial darcs gnused breezy
+              subversion
-            ] ++ lib.optionals stdenv.isLinux [ rpm dpkg cdrkit ] );
+              openssh
+              final.nix
+              coreutils
+              findutils
+              pixz
+              gzip
+              bzip2
+              lzma
+              gnutar
+              unzip
+              git
+              gitAndTools.topGit
+              mercurial
+              darcs
+              gnused
+              breezy
+            ] ++ lib.optionals stdenv.isLinux [ rpm dpkg cdrkit ]
+          );
 
           shellHook = ''
             pushd $(git rev-parse --show-toplevel) >/dev/null
@@ -713,7 +756,8 @@
               networking.firewall.allowedTCPPorts = [ 3000 ];
             };
             skipLint = true;
-            testScript = let
+            testScript =
+              let
                 scripts.mktoken = pkgs.writeText "token.sql" ''
                   INSERT INTO access_token (id, uid, name, created_unix, updated_unix, token_hash, token_salt, token_last_eight) VALUES (1, 1, 'hydra', 1617107360, 1617107360, 'a930f319ca362d7b49a4040ac0af74521c3a3c3303a86f327b01994430672d33b6ec53e4ea774253208686c712495e12a486', 'XRjWE9YW0g', '31d3a9c7');
                 '';
@@ -820,7 +864,8 @@
                     };
                    }
                 '';
-            in ''
+              in
+              ''
                 import json
 
                 machine.start()
@@ -912,6 +957,7 @@
                 objectClass: dcObject
                 objectClass: organization
 
+
                 dn: ou=users,dc=example
                 ou: users
                 description: All users
@@ -1114,9 +1160,11 @@
       nixosConfigurations.container = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules =
-          [ self.nixosModules.hydraTest
+          [
+            self.nixosModules.hydraTest
             self.nixosModules.hydraProxy
-            { system.configurationRevision = self.rev;
+            {
+              system.configurationRevision = self.rev;
 
               boot.isContainer = true;
               networking.useDHCP = false;