Unfortunately, we can't vendor cmd/cover because it needs to be installed globally into $GOTOOLDIR, and we can't automatically install it because writing to $GOTOOLDIR might require root permissions (e.g., Yum installs Go into /usr/lib64/golang).
Complicating matters, the cmd/cover import path changed in Go v1.4—the new path (golang.org/x/tools/cmd/cover) won't work with pre-1.4, and the old one (code.google.com/p/go.tools/cmd/cover) won't work with 1.4+.
Per @jrconlin's suggestion, we should detect if go tool cover is installed, and emit a friendly error if it's not.
ghost
commented
9 years ago
Unfortunately, we can't vendor
cmd/coverbecause it needs to be installed globally into$GOTOOLDIR, and we can't automatically install it because writing to$GOTOOLDIRmight require root permissions (e.g., Yum installs Go into/usr/lib64/golang).Complicating matters, the
cmd/coverimport path changed in Go v1.4—the new path (golang.org/x/tools/cmd/cover) won't work with pre-1.4, and the old one (code.google.com/p/go.tools/cmd/cover) won't work with 1.4+.Per @jrconlin's suggestion, we should detect if
go tool coveris installed, and emit a friendly error if it's not.