The whole thing is like this:
prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ source
~/dlang/dmd-2.088.0/activate
(dmd-2.088.0)prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$
dub
WARNING: A deprecated branch based version specification is used
for the dependency dagon. Please use numbered versions instead.
Also note that you can still use the dub.selections.json file to
override a certain dependency to use a branch instead.
Invalid source/import path:
/home/prokop/git_SW/_Dlang/dagon-demo/shaders
Performing "debug" build using
/home/prokop/dlang/dmd-2.088.0/linux/bin64/dmd for x86_64.
bindbc-loader 0.1.1: target for configuration "noBC" is up to
date.
bindbc-ft 0.1.0: target for configuration "library" is up to date.
bindbc-nuklear 0.1.0: target for configuration "dynamic" is up to
date.
bindbc-opengl 0.4.0: target for configuration "dynamic" is up to
date.
bindbc-sdl 0.4.1: target for configuration "dynamic" is up to
date.
dlib 0.16.0: target for configuration "library" is up to date.
dagon ~dev_0.10: target for configuration "library" is up to date.
dagondemo 0.10.0+commit.6.gdf2dd63: target for configuration
"application" is up to date.
To force a rebuild of up-to-date targets, run again with --force.
Copying files for dagon...
Invalid source/import path:
/home/prokop/git_SW/_Dlang/dagon-demo/shaders
Running ./dagondemo
