Matthias Clasen 0189b0c903 post-install: Use gtk4-update-icon-cache ...

I was building GTK in a minimal container without
GTK3 installed, and this caused install to fail.
We should use the tool that we just installed.

2019-04-02 00:27:32 +00:00

..

post-install.py

post-install: Use gtk4-update-icon-cache

2019-04-02 00:27:32 +00:00