add support for plan9

conn_test.go

@@ -724,7 +724,17 @@ func TestBadConn(t *testing.T) {
 // TestCloseBadConn tests that the underlying connection can be closed with
 // Close after an error.
 func TestCloseBadConn(t *testing.T) {
-	nc, err := net.Dial("tcp", "localhost:5432")
+	env := parseEnviron(os.Environ())
+	host := env["host"]
+	port := env["port"]
+	if host == "" {
+		host = "localhost"
+	}
+	if port == "" {
+		port = "5432"
+	}
+	addr := net.JoinHostPort(host, port)
+	nc, err := net.Dial("tcp", addr)
 	if err != nil {
 		t.Fatal(err)
 	}

user_plan9.go

@@ -0,0 +1,24 @@
+// Package pq is a pure Go Postgres driver for the database/sql package.
+
+// +build plan9
+
+package pq
+
+import (
+	"os"
+	"os/user"
+)
+
+func userCurrent() (string, error) {
+	u, err := user.Current()
+	if err == nil {
+		return u.Username, nil
+	}
+
+	name := os.Getenv("user")
+	if name != "" {
+		return name, nil
+	}
+
+	return "", ErrCouldNotDetectUsername
+}