Weird formatting of optionals

[jtojnar]

Description

When formatting a long line with condition and a list, splitting the condition is preferred over the list. Would be nice to have some heuristic that would prefer the opposite.

Small example input

{
  NIX_CFLAGS_COMPILE = lib.optionals (lib.versionOlder prev.php.version "7.2" && pkgs.stdenv.cc.isClang) [" -Wno-implicit-int"];
}

Expected output

{
  NIX_CFLAGS_COMPILE =
    lib.optionals (lib.versionOlder prev.php.version "7.2" && pkgs.stdenv.cc.isClang)
      [
        " -Wno-implicit-int"
      ];
}

Actual output

{
  NIX_CFLAGS_COMPILE = lib.optionals (
    lib.versionOlder prev.php.version "7.2" && pkgs.stdenv.cc.isClang
  ) [ " -Wno-implicit-int" ];
}

I can get the preferred formatting if I split the array onto multiple lines. For example

{
  NIX_CFLAGS_COMPILE = lib.optionals (lib.versionOlder prev.php.version "7.2" && pkgs.stdenv.cc.isClang) [" -Wno-implicit-int"
  ];
}```