Stub out ReadPassword on plan9 and solaris to fix compilation

fs/config.go

@@ -28,7 +28,6 @@ import (
 	"github.com/mreiferson/go-httpclient"
 	"github.com/spf13/pflag"
 	"golang.org/x/crypto/nacl/secretbox"
-	"golang.org/x/crypto/ssh/terminal"
 	"golang.org/x/text/unicode/norm"
 )
 
@@ -537,17 +536,6 @@ func ReadLine() string {
 	return strings.TrimSpace(line)
 }
 
-// ReadPassword reads a password
-// without echoing it to the terminal.
-func ReadPassword() string {
-	line, err := terminal.ReadPassword(int(os.Stdin.Fd()))
-	fmt.Println("")
-	if err != nil {
-		log.Fatalf("Failed to read password: %v", err)
-	}
-	return strings.TrimSpace(string(line))
-}
-
 // Command - choose one
 func Command(commands []string) byte {
 	opts := []string{}

fs/config_read_password.go

@@ -0,0 +1,26 @@
+// ReadPassword for OSes which are supported by golang.org/x/crypto/ssh/terminal
+// See https://github.com/golang/go/issues/14441 - plan9
+//     https://github.com/golang/go/issues/13085 - solaris
+
+// +build !solaris,!plan9
+
+package fs
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strings"
+
+	"golang.org/x/crypto/ssh/terminal"
+)
+
+// ReadPassword reads a password without echoing it to the terminal.
+func ReadPassword() string {
+	line, err := terminal.ReadPassword(int(os.Stdin.Fd()))
+	fmt.Println("")
+	if err != nil {
+		log.Fatalf("Failed to read password: %v", err)
+	}
+	return strings.TrimSpace(string(line))
+}

fs/config_read_password_unsupported.go

@@ -0,0 +1,12 @@
+// ReadPassword for OSes which are not supported by golang.org/x/crypto/ssh/terminal
+// See https://github.com/golang/go/issues/14441 - plan9
+//     https://github.com/golang/go/issues/13085 - solaris
+
+// +build solaris plan9
+
+package fs
+
+// ReadPassword reads a password with echoing it to the terminal.
+func ReadPassword() string {
+	return ReadLine()
+}