I successfully built target bridge-nogui . The last step required implementation of a 'make' phase in the go build process. I considered splitting out the go component into its own package, to be an input of a qt package, but was not able to do it correctly. Implementation of a go process in the gnu, or qt, build system is not even worth considering. Thus I settled on invocation of "make" with some flags to make it work in the go build system.
I also decided against any further optimization of the make invocation, because I am planning to implement all the build targets defined by upstream, if possible. At this point, I need to rest a little. I will test the binary I built, see if it even works. After that I am going to rewrite the module in a single style. Only then I will work on the other targets. I also need to properly learn the peculiarities of the Go build system. I would not be able to go this far without using random elements found in other Go packages. It is unfortunate, that the build system reference page is missing some key concepts in the Go process. https://guix.gnu.org/manual/en/html_node/Build-Systems.html Marek Pasnikowski