How to import local packages in go

Question

I am new to go and working on an example code that I want to localize  In the original main go import statement it was   import        quot log quot       quot net http quot       quot github com foo bar myapp common quot       quot github com foo bar myapp routers quot     Now I have common and routers package in  home me go src myapp So I converted the import statement to  import        quot log quot       quot net http quot       quot   common quot       quot   routers quot     But when I run go install myapp I get these errors  can t load package   home me go src myapp main go 7 3  local import  quot   common quot  in non-local package  Also  when I use common and routers instead of   common and   routers in the import statement  I get  myapp main go 7 3  cannot find package  quot common quot  in any of       usr local go src common  from  GOROOT       home me go src common  from  GOPATH  myapp main go 8 2  cannot find package  quot routers quot  in any of       usr local go src routers  from  GOROOT       home me go src routers  from  GOPATH   How can I fix this

User · Answer

Local package is a annoying problem in go.

For some projects in our company we decide not use sub packages at all.

$ glide install
$ go get
$ go install

All work.

For some projects we use sub packages, and import local packages with full path:

import "xxxx.gitlab.xx/xxgroup/xxproject/xxsubpackage

But if we fork this project, then the subpackages still refer the original one.

User · Answer

Well  I figured out the problem   Basically Go starting path for import is  HOME go src  So I just needed to add myapp in front of the package names  that is  the import should be   import        log       net http       myapp common       myapp routers

User · Answer

Import paths are relative to your  GOPATH and  GOROOT environment variables  For example  with the following  GOPATH   GOPATH  home me go   Packages located in  home me go src lib common and  home me go src lib routers are imported respectively as   import        lib common       lib routers

User · Answer

If you are using Go 1 5 above  you can try to use vendoring feature   It allows you to put your local package under vendor folder and import it with shorter path  In your case  you can put your common and routers folder inside vendor folder so it would be like  myapp  --vendor  ----common  ----routers  ------middleware  --main go   and import it like this  import        common       routers       routers middleware      This will work because Go will try to lookup your package starting at your project   s vendor directory  if it has at least one  go file  instead of  GOPATH src   FYI  You can do more with vendor  because this feature allows you to put  all your dependency   s code  for a package inside your own project s directory so it will be able to always get the same dependencies versions for all builds  It s like npm or pip in python  but you need to manually copy your dependencies to you project  or if you want to make it easy  try to look govendor by Daniel Theophanes  For more learning about this feature  try to look up here  Understanding and Using Vendor Folder by Daniel Theophanes  Understanding Go Dependency Management by Lucas Fernandes da Costa  I hope you or someone else find it helpfully

[go] How to import local packages in go?

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