goversion: use rsc.io/goversion/version instead of internal package (#47

)

Follow up of
1128431#commitcomment-23936637

Solves the problem of us having to manually watch
upstream and pull in bug fixes and updates, if our
internal copy goes stale.

Fixes #22.

goprocess/gp.go

@@ -9,8 +9,9 @@ import (
 	"os"
 	"sync"
 
+	goversion "rsc.io/goversion/version"
+
 	"github.com/google/gops/internal"
-	"github.com/google/gops/internal/goversion"
 	ps "github.com/keybase/go-ps"
 )
 
@@ -95,11 +96,13 @@ func isGo(pr ps.Process) (path, version string, agent, ok bool, err error) {
 	if err != nil {
 		return
 	}
-	fi, err := os.Stat(path)
+	var versionInfo goversion.Version
+	versionInfo, err = goversion.ReadExe(path)
 	if err != nil {
 		return
 	}
-	version, ok = goversion.Report(path, path, fi)
+	ok = true
+	version = versionInfo.Release
 	pidfile, err := internal.PIDFile(pr.Pid())
 	if err == nil {
 		_, err := os.Stat(pidfile)