Feature request: Support for Absolute Includes w.r.t. the project root.

[MariusDrulea]

This is not an issue, it's rather a feature request.

When having a larger project, I think we shall have the possibility to use absolute paths with respect to the root of the project. See the following project structure: core ---dir1 ------subdir1 ---------file1.jl ---dir2 ------subdir2 ---------file2.jl

In file2.jl it is ugly to have an include like: @from "../../dir1/subdir1/file1.jl". The number of "../" can be much longer. Instead we shall have @from "core/dir1/subdir1/file1.jl".

That implies the use of some Environment Variable and add the folder containing "core" to it. Can we use JULIA_LOAD_PATH for this purpose?

[patrick-kidger]

FWIW I personally prefer the ..-based syntax, but I know that's not universal.

Anyway, I think this should be simple enough to do without any environment variables or anything. Something like the following:

macro fromroot(path::String, ex::Expr)
       root = Base.moduleroot(__module__)
       basepath = dirname(pathof(root))
       path = joinpath(basepath, path)
       return quote @from $path $ex end
end

## file2.jl
@fromroot "core/dir1/subdir1/file.jl" import foo

(untested)

Give it a try and see if it works? This seems like a reasonable thing to want so I think I'd be happy to accept a PR on this.