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In our project, one person is writting plain SCSS, and other people are working on Rails app. I regulary have to copy the SCSS from the simple repo into the Rails asset pipeline. The copy is exact. So I would like to know how to setup git so that I could do it on a regular basis? (as convenient as possible)

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  • I know you can do sparse checkout stackoverflow.com/a/13738951/2190425 , but what if I need to do it within repository, does that make any difference? Commented Mar 14, 2017 at 17:47

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Well, I guess git submodules is the feature you're looking for. See the git documentation at https://git-scm.com/book/en/v2/Git-Tools-Submodules

If I sound a little hesitant, it's because I've always thought it was a bit odd to pull in dependencies with the source control software; if you could automate this through your build tools I think it might be a more natural solution. But if doing it as a git operation is the way to go for you, I'd look at the above.

UPDATE

Follow-up question from comments: Can a submodule be set up for just a sub-folder of the other project?

So we have project A

projectA/ stuff/ other-stuff/ shared-stuff/

and project B

projectB/ more-stuff/ unrelated-stuff/

and we want projectA/shared-stuff to show up also as projectB/shared-stuff/ and we're talking about how to do this with submodules.

I don't know that a submodule can be any more specific than "embed this commit of that repo". But one suggestion would be to split the shared code into its own repo

shared-stuff/

Then add shared-stuff as a submodule of both project A and project B

projectA repo | shared-stuff repo | projectB repo ================================================================== / | | / stuff/ | | more-stuff/ other-stuff/ | | unrelated-stuff/ (shared-stuff)--> / <-- (shared-stuff)

Of course because submodule mappings are contained within the repo using the submodule, the folder names (or locations in the parent projects' trees) don't have to match...

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Thanks, how would you add a submodule, but not the whole repo, but only a folder of that submodule, is it possible?
I don't know if that's possible. Could you put the subfolder in its own repo and make that a submodule of both projects?
Hmm. not following, can you clarify?

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