Add New() for creating new keybase objects.

This function accepts functional options, and allows you to set an alternate home dir for keybase

chat.go

@@ -37,7 +37,15 @@ func getNewMessages(k *Keybase, subs *subscriptionChannels, execOptions []string
 		execString = append(execString, execOptions...)
 	}
 	for {
-		execCmd := exec.Command(k.Path, execString...)
+		cmd := make([]string, 0)
+
+		if k.HomePath != "" {
+			cmd = append(cmd, "--home", k.HomePath)
+		}
+
+		cmd = append(cmd, execString...)
+
+		execCmd := exec.Command(k.ExePath, cmd...)
 		stdOut, _ := execCmd.StdoutPipe()
 		execCmd.Start()
 		scanner := bufio.NewScanner(stdOut)

keybase.go

@@ -21,13 +21,33 @@ const (
 	CHAT string = "chat"
 )
 
+// New returns a new Keybase
+func New(opts ...KeybaseOpt) *Keybase {
+	k := &Keybase{ExePath: "keybase"}
+
+	for _, opt := range opts {
+		opt.apply(k)
+	}
+
+	s := k.status()
+	k.Version = k.version()
+	k.LoggedIn = s.LoggedIn
+	if k.LoggedIn {
+		k.Username = s.Username
+		k.Device = s.Device.Name
+	}
+
+	return k
+}
+
 // NewKeybase returns a new Keybase. Optionally, you can pass a string containing the path to the Keybase executable as the first argument.
+// This is deprecated and will be removed in a future update. Use New() instead.
 func NewKeybase(path ...string) *Keybase {
 	k := &Keybase{}
 	if len(path) < 1 {
-		k.Path = "keybase"
+		k.ExePath = "keybase"
 	} else {
-		k.Path = path[0]
+		k.ExePath = path[0]
 	}
 
 	s := k.status()
@@ -42,7 +62,15 @@ func NewKeybase(path ...string) *Keybase {
 
 // Exec executes the given Keybase command
 func (k *Keybase) Exec(command ...string) ([]byte, error) {
-	out, err := exec.Command(k.Path, command...).Output()
+	cmd := make([]string, 0)
+
+	if k.HomePath != "" {
+		cmd = append(cmd, "--home", k.HomePath)
+	}
+
+	cmd = append(cmd, command...)
+
+	out, err := exec.Command(k.ExePath, cmd...).Output()
 	if err != nil {
 		return []byte{}, err
 	}

types.go

@@ -20,6 +20,37 @@ type RunOptions struct {
 	FilterChannels []chat1.ChatChannel // Only subscribe to messages from specified channels
 }
 
+// KeybaseOpt configures a Keybase
+type KeybaseOpt interface {
+	apply(kb *Keybase)
+}
+
+// SetExePath sets the path to the Keybase executable
+func SetExePath(path string) KeybaseOpt {
+	return setExePath{path}
+}
+
+type setExePath struct {
+	path string
+}
+
+func (o setExePath) apply(kb *Keybase) {
+	kb.ExePath = o.path
+}
+
+// SetHomePath sets the path to the Keybase home directory
+func SetHomePath(path string) KeybaseOpt {
+	return setHomePath{path}
+}
+
+type setHomePath struct {
+	path string
+}
+
+func (o setHomePath) apply(kb *Keybase) {
+	kb.HomePath = o.path
+}
+
 type subscriptionType struct {
 	Type string `json:"type"`
 }
@@ -954,7 +985,8 @@ type userBlocks struct {
 
 // Keybase holds basic information about the local Keybase executable
 type Keybase struct {
-	Path     string
+	HomePath string
+	ExePath  string
 	Username string
 	LoggedIn bool
 	Version  string