treewide: format all inactive Nix files

After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.

Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.

A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.

This commit was automatically created and can be verified using

    nix-build a08b3a4d19.tar.gz \
      --argstr baseRev b32a094368
    result/bin/apply-formatting $NIXPKGS_PATH

nixos/tests/tsm-client-gui.nix

@@ -5,53 +5,58 @@
 # to show its main application window
 # and verifies some configuration information.
 
-import ./make-test-python.nix ({ lib, pkgs, ... }: {
-  name = "tsm-client";
+import ./make-test-python.nix (
+  { lib, pkgs, ... }:
+  {
+    name = "tsm-client";
 
-  enableOCR = true;
+    enableOCR = true;
 
-  nodes.machine = { pkgs, ... }: {
-    imports = [ ./common/x11.nix ];
-    programs.tsmClient = {
-      enable = true;
-      package = pkgs.tsm-client-withGui;
-      defaultServername = "testserver";
-      servers.testserver = {
-        # 192.0.0.8 is a "dummy address" according to RFC 7600
-        tcpserveraddress = "192.0.0.8";
-        nodename = "SOME-NODE";
-        passworddir = "/tmp";
+    nodes.machine =
+      { pkgs, ... }:
+      {
+        imports = [ ./common/x11.nix ];
+        programs.tsmClient = {
+          enable = true;
+          package = pkgs.tsm-client-withGui;
+          defaultServername = "testserver";
+          servers.testserver = {
+            # 192.0.0.8 is a "dummy address" according to RFC 7600
+            tcpserveraddress = "192.0.0.8";
+            nodename = "SOME-NODE";
+            passworddir = "/tmp";
+          };
+        };
       };
-    };
-  };
 
-  testScript = ''
-    machine.succeed("which dsmj")  # fail early if this is missing
-    machine.wait_for_x()
-    machine.execute("DSM_LOG=/tmp dsmj -optfile=/dev/null >&2 &")
+    testScript = ''
+      machine.succeed("which dsmj")  # fail early if this is missing
+      machine.wait_for_x()
+      machine.execute("DSM_LOG=/tmp dsmj -optfile=/dev/null >&2 &")
 
-    # does it report the "TCP/IP connection failure" error code?
-    machine.wait_for_window("IBM Storage Protect")
-    machine.wait_for_text("ANS2610S")
-    machine.send_key("esc")
+      # does it report the "TCP/IP connection failure" error code?
+      machine.wait_for_window("IBM Storage Protect")
+      machine.wait_for_text("ANS2610S")
+      machine.send_key("esc")
 
-    # it asks to continue to restore a local backupset now;
-    # "yes" (return) leads to the main application window
-    machine.wait_for_text("backupset")
-    machine.send_key("ret")
+      # it asks to continue to restore a local backupset now;
+      # "yes" (return) leads to the main application window
+      machine.wait_for_text("backupset")
+      machine.send_key("ret")
 
-    # main window: navigate to "Connection Information"
-    machine.wait_for_text("Welcome")
-    machine.send_key("alt-f")  # "File" menu
-    machine.send_key("c")  # "Connection Information"
+      # main window: navigate to "Connection Information"
+      machine.wait_for_text("Welcome")
+      machine.send_key("alt-f")  # "File" menu
+      machine.send_key("c")  # "Connection Information"
 
-    # "Connection Information" dialog box
-    machine.wait_for_window("Connection Information")
-    machine.wait_for_text("SOME-NODE")
-    machine.wait_for_text("${pkgs.tsm-client.passthru.unwrapped.version}")
+      # "Connection Information" dialog box
+      machine.wait_for_window("Connection Information")
+      machine.wait_for_text("SOME-NODE")
+      machine.wait_for_text("${pkgs.tsm-client.passthru.unwrapped.version}")
 
-    machine.shutdown()
-  '';
+      machine.shutdown()
+    '';
 
-  meta.maintainers = [ lib.maintainers.yarny ];
-})
+    meta.maintainers = [ lib.maintainers.yarny ];
+  }
+)