My snap uses a custom plugin to build: https://git.launchpad.net/~mwhudson/+git/gosnap/tree/snap/plugins/x_gobuild.py?h=go1.8. In that code, I want to access the flags that need to be passed to the linker to make classic snaps link against the core snap rather than the usual path (-Wl,-z,nodefib, -Wl,-rpath,xxx, etc). Currently, as I read things, it can't (well not without very silly hacks).