如何在go中导入自己的内部包？

Question

我正试着用(非官方的) Standard Go Project Layout做一个Go应用。我不明白的是，我应该如何导入internal目录中的包。

This is my project

使用Dockerfile文件(将internal目录复制到$GOPATH )，它可以工作：

~/go/src/project-layout$ docker build --no-cache .
(...)
Step 5/7 : RUN ls -la /go/src
 ---> Running in a27235b0bbef
total 24
drwxrwxrwx    1 root     root          4096 Apr 29 07:05 .
drwxrwxrwx    1 root     root          4096 Apr 12 22:23 ..
-rw-rw-r--    1 root     root           556 Apr 29 06:06 README.md
drwxrwxr-x    3 root     root          4096 Apr 29 06:08 app
drwxr-xr-x    1 root     root          4096 Apr 29 07:05 myproject
drwxrwxr-x    3 root     root          4096 Apr 29 06:11 pkg
Removing intermediate container a27235b0bbef
 ---> bb924f8f88f0
Step 6/7 : RUN go build -o myapp ./cmd/myapp/main.go
 ---> Running in 06bd6cd778d2
Removing intermediate container 06bd6cd778d2
 ---> 31184f9224c8
Step 7/7 : RUN ./myapp
 ---> Running in baf75d4dd503
Hello World, from myapp main
Hello world, from myapp internals
Hello world, from myprivatelib: 'myapp internal'
Hello world, from myprivatelib: 'myapp main'
Removing intermediate container baf75d4dd503
 ---> 5747b6b4686f
Successfully built 5747b6b4686f

但是，当我尝试在本地构建时，我得到：

~/go/src/project-layout$ go build -o myapp ./cmd/myapp/main.go
cmd/myapp/main.go:6:2: cannot find package "app/myapp" in any of:
    /home/comavn/go/src/project-layout/vendor/app/myapp (vendor tree)
    /usr/lib/go-1.10/src/app/myapp (from $GOROOT)
    /home/comavn/go/src/app/myapp (from $GOPATH)
cmd/myapp/main.go:7:2: cannot find package "pkg/myprivatelib" in any of:
    /home/comavn/go/src/project-layout/vendor/pkg/myprivatelib (vendor tree)
    /usr/lib/go-1.10/src/pkg/myprivatelib (from $GOROOT)
    /home/comavn/go/src/pkg/myprivatelib (from $GOPATH)

我可以通过符号链接供应商目录中的internal/app和internal/pkg来让它工作，但这似乎是错误的……

那么，我到底做错了什么呢？如何导入这些内部包？

Answer 1

我想我找到了合适的解决方案：https://github.com/ComaVN/project-layout/commit/6415a8f06dd7fbdcf1c7282bc3ec172c3e145611

您还必须使用项目名称导入：

import (
    "project-layout/internal/app/myapp"
    "project-layout/internal/pkg/myprivatelib"
)

不幸的是，这确实意味着构建依赖于项目所使用的确切目录名称。