Not possible to import using go mod vendor

[gustafj]

Hi, as is now its not possible to import go-gl via the vendor directory using go mod vendor.

The reason is that go mod vendor prunes all directories with .c files that does not have a companion .go file.
This results in failed builds due to lacking .c sources, e.g. vendor/github.com/go-gl/glfw/v3.2/glfw/c_glfw.go:4:10: fatal error: 'glfw/src/context.c' file not found

This is expected behavior on the go mod vendor part (see https://github.com/golang/go/wiki/Modules#some-needed-files-may-not-be-present-in-populated-vendor-directory) but basically means that go-gl is not possible to vendor.

Would it be possible to solve this by bundling a dummy.go file in the affected directories?

[pwaller]

Hi! Thanks for reporting this. Your solution of dummy.go sounds fine to me. PR welcome.

[pwaller]

@gustafj I've submitted a fix for you in #258 - please take a look and let me know if it fixes your issues or not.

[rbrownrigg]

Can the associated pull request be merged and this issue closed out? I've stumbled across this issue too in the context of modules/vendoring.

Thanks

[pwaller]

@rbrownrigg if you test it and leave a message on the PR saying it solves the problem for you, I'll merge it.

[gustafj]

Unfortunately it don't 😢, see my comment in the PR.