Can no longer pass package path to installHeadersDirectory source without "."

[MasonRemaley]

Zig Version

0.14.0-dev.1820+ea527f7a8

Steps to Reproduce and Observed Behavior

This project's build script used to have this line:

dear_imgui_lib.installHeadersDirectory(upstream.path(""), "", .{});

However, under the current version of Zig this results in an error:

error: unable to open source directory '': FileNotFound

If you change the initial "" to "." then it works as expected:

dear_imgui_lib.installHeadersDirectory(upstream.path("."), "", .{});

Expected Behavior

I expected this line to install the headers it finds in the root of upstream into the include directory.