英文:
Add module as git submodule inside main package
问题
我对golang还比较新手，遇到了一些创建新模块的问题。
我想在我的主包中添加一个git子模块，这样我就可以同时对两个包进行工作和提交。
将模块http_fs作为git子模块添加如下：
git submodule add git@github.com:xxx/http_fs.git repo/http_fs
主包如下：
package main
import "repo/http_fs"
http_fs模块的go.mod文件如下：
module github.com/xxx/http_fs
go 1.19
当我尝试用go run main.go运行主包时，出现以下错误：
package repo/http_fs is not in GOROOT (/usr/local/go/src/repo/http_fs)
文件结构如下：
./main.go // 主包
./repo/http_fs/http_fs.go
更新
主包中的go.mod文件如下：
module main
go 1.19
replace github.com/xxx/http_fs v1 => ./repo/http_fs
英文:
I'm fairly new to golang, and have some issues creating a new module
I want to add a git submodule inside my main package so I can work and make commits to both packages at the same time
The module http_fs is added as a git submodule like this
git submodule add git@github.com:xxx/http_fs.git repo/http_fs
The main package
package main
import "repo/http_fs"
go.mod for http_fs module looks like this
module github.com/xxx/http_fs
go 1.19
When I try to run the main package with go run main.go I get this error
package repo/http_fs is not in GOROOT (/usr/local/go/src/repo/http_fs)
File structure
./main.go // main package
./repo/http_fs/http_fs.go
update
go.mod in the main package
module main
go 1.19
replace github.com/xxx/http_fs v1 => ./repo/http_fs
答案1
得分: 3
错误的原因是go.mod文件中声明的模块是github.com/xxx/http_fs，而不是repo/http_fs。你需要导入与go.mod中指定的模块完全相同的模块，即github.com/xxx/http_fs。
在你的主模块的go.mod文件中使用replace指令：
replace github.com/xxx/http_fs v1.2.3 => ./repo/http_fs
replace指令告诉编译器在哪里找到模块的源代码。
英文:
The reason for the error
package repo/http_fs is not in GOROOT (/usr/local/go/src/repo/http_fs)
is that go.mod in /usr/local/go/src/repo/http_fs declares the modules github.com/xxx/http_fs, not repo/http_fs.
You need to import exactly the same module as specified in the go.mod, i.e. github.com/xxx/http_fs
In go.mod of your main module use replace directive:
replace github.com/xxx/http_fs v1.2.3 => ./repo/http_fs
Replace directive tells compiler where to find the sources of the module.
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