我想使用 Go，Windows 上使用 MSYS2 的編程語言。我應該使用哪個包以及如何避免以下錯誤：package bufio: unrecognized import path "bufio"package bytes: unrecognized import path "bytes"package crypto: unrecognized import path "crypto"package crypto/des: unrecognized import path "crypto/des"package crypto/hmac: unrecognized import path "crypto/hmac"package crypto/md5: unrecognized import path "crypto/md5"package crypto/rand: unrecognized import path "crypto/rand"package crypto/rc4: unrecognized import path "crypto/rc4"package crypto/sha256: unrecognized import path "crypto/sha256"package crypto/tls: unrecognized import path "crypto/tls"package crypto/x509: unrecognized import path "crypto/x509"package encoding/base64: unrecognized import path "encoding/base64"package encoding/binary: unrecognized import path "encoding/binary"package encoding/hex: unrecognized import path "encoding/hex"package encoding/json: unrecognized import path "encoding/json"package encoding/xml: unrecognized import path "encoding/xml"package errors: unrecognized import path "errors"package fmt: unrecognized import path "fmt"package io: unrecognized import path "io"package os: unrecognized import path "os"package path/filepath: unrecognized import path "path/filepath"package runtime: unrecognized import path "runtime"package strconv: unrecognized import path "strconv"package strings: unrecognized import path "strings"package sync: unrecognized import path "sync"package time: unrecognized import path "time"package os/exec: unrecognized import path "os/exec"package syscall: unrecognized import path "syscall"package io/ioutil: unrecognized import path "io/ioutil"package regexp: unrecognized import path "regexp"package hash: unrecognized import path "hash"package net: unrecognized import path "net"package sync/atomic: unrecognized import path "sync/atomic"package unsafe: unrecognized import path "unsafe"package hash/crc32: unrecognized import path "hash/crc32"package reflect: unrecognized import path "reflect"