I accidentally deleted all the contents on my Project.toml file. Will that affect my package updating?
~/.julia/environments/v1.x/Project.toml? Yes. You will just need to
pkg> add or
pkg> dev whatever you had there.
Theoretically this particular
Project.toml it could be regenerated from the corresponding
Manifest.toml but I am not aware of existing functionality for this.
In 1.4 you will be able to
instantiate a lonely Manifest.toml (assuming there are no packages with the same name) and all packages in it will be put into a new Project file.
Do you mean i need to reinstall all packsges?
They should be in your depot unless you did
pkg> gc or similar, you just have to
add them. So no downloading/rebuilding should be necessary.