Link to sourcecode for modules of other Packages

[Datseris]

Hi, in DynamicalSystems.jl 4 other Julia packages are loaded as modules, and the docs are being created. Here is how our make file looks like:

https://github.com/JuliaDynamics/DynamicalSystems.jl/blob/master/docs/make.jl

All functions that are expanded in @docs blocks come from modules that are re-exported by dynamical systems. We use Reexport to do this at the moment.

Unfortunately, the nice button "source" dissapears from the expanded docstrings. See e.g.:

https://juliadynamics.github.io/DynamicalSystems.jl/dev/chaos/lyapunovs/#ChaosTools.lyapunovs

Is it possible to restore this button to point at the source from another repo?

[goerz]

I've had the same problem with QuantumControl, and I finally figured out that Documenter shows the Source button if and only if the file with the source is in a git repository. This means I've had to install all the packages that I want to include docstrings for via Pkg.develop in the CI run that generates the documentation (which clones them into ~/.julia/dev` and thus allows Documenter to figure out the link to their original Github repo).

It would probably be good if this was explained in Documenter's documentation somewhere.

[mortenpi]

I think this will get addressed together with #1975.

[odow]

Documenter 1.0 has a new remotes keyword exactly for this. It just needs some better documentation, so closing in favor of #2242.