I have go.mod file inside root/src/abc. And in root/build-scripts I have a script which does go get. As I am using Go 1.11 I have not used the go path instead the mod file in root/src/abc takes care of other imports except for the packages that are being used in build script which gives error:
go: cannot determine module path for source directory.
Any suggestions?
It's hard to say anything with certainty without seeing the actual commands you run, by it seems your scripts do not change the working directory, and therefore the go commands they execute are not in the module's root folder or any of its subfolders.
Quoting from Command Go: The go.mod file:
A module version is defined by a tree of source files, with a go.mod file in its root. When the go command is run, it looks in the current directory and then successive parent directories to find the go.mod marking the root of the main (current) module.
So your scripts should change the working directory to root/src/abc or any of its subfolders, else the go command will not find the go.mod file.