cmd/go: slightly less confusing error message

If the argument to go fix isn't a package directory, the message said nothing helpful.
Now it at least says a package couldn't be found.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5577072

diff --git a/src/cmd/go/pkg.go b/src/cmd/go/pkg.go
index bbfcfa26a76ee0ce9b40d58b3928ec060675b40e..21fbb273db83d57e0bd9d25cb41867b32c256d54 100644 (file)
--- a/src/cmd/go/pkg.go
+++ b/src/cmd/go/pkg.go
@@ -407,7 +407,7 @@ func packages(args []string) []*Package {
        for _, arg := range args {
                pkg := loadPackage(arg, &stk)
                if pkg.Error != nil {
-                       errorf("%s", pkg.Error)
+                       errorf("can't load package: %s", pkg.Error)
                        continue
                }
                pkgs = append(pkgs, pkg)
@@ -437,7 +437,7 @@ func packagesForBuild(args []string) []*Package {
        printed := map[*PackageError]bool{}
        for _, pkg := range pkgs {
                if pkg.Error != nil {
-                       errorf("%s", pkg.Error)
+                       errorf("can't load package: %s", pkg.Error)
                }
                for _, err := range pkg.DepsErrors {
                        // Since these are errors in dependencies,