How to use a Git repository with multiple projects?

Question

I'm new to Github. Was unable to find a tutorial regarding this.

• I have a repository core-repository, which contains core modules of all my projects.

• If I were to make changes in the core-repository, it has to affect all its dependent projects.

• These projects are individual repositories, with core-repository as part of them.

How to implement this?

core-modules/
    module1/
    module2/

project1/
    folder1/
        core-modules/
            module1/
            module2/

Note: Please comment before downvoting. As well point towards a valid solution.

Answer 1

One possible solution is to use submodule in order to:

• define one "parent" repo per project
• one submodule for the actual project repo (your current "individual repos")
• one submodule for the core-repository

That is:

parent (one repo)
  core (one repo)
  src (one repo)
    core -> ../core

Once cloned, you still need to make a symlink from inside the source project repo to the core-repo folder.

If the core-repo has new commits, a simple git submodule update --remote inside each parent repo is enough to get those new commits inside the core submodule.