Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
        Fresh install of Debian Sid, install fcitx and then fcitx-googlepinyin

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***

I have done some digging and here is my finding and possible workaround:

First, the reason why fcitx-diagnose complains about missing library
files is because missing of "fcitx4-config". The fcitx-diagnose script
cannot get the library path. The workaround is to install
"fcitx-libs-dev" package.

Second, the reason I cannot add any input method into fcitx is because
no input method is showing in the "input method" box after running
fcitx-configtool, even after I unchecked "Only show in current
language". I have to trigger those input methods on manually by
modifying the profile file located under $HOME/.config/fcitx/profile

Let me know if you need any more additional information from me. Hope it
helps you fix the bug soon.