This change is the result of replacing:
buildGoPackage rec \{\s+rev\s+=\s+"(.*)";\s+name\s+=\s+"(.*)-\$\{stdenv.lib.strings.substring 0 7 rev\}";\s+goPackagePath\s+=\s+"github.com/(.*)/\2";\s+src\s+=\s+fetchFromGitHub\s+\{\s+inherit rev;\s+owner\s+=\s+"\3";\s+repo\s+=\s+"\2";\s+sha256\s+=\s"(.*)";\s+\};\s+\};
with:
buildFromGitHub {\n rev = "$1";\n owner = "$3";\n repo = "$2";\n sha256 = "$4";\n };
in pkgs/top-level/go-packages.nix.
I also inherited `rev` in `buildFromGitHub` to prevent a mass rebuild of Go packages, even though it's unused.
5523ab8807