google app engine - Subfolders and packages when using Appengine and Go -

when deploying and/or testing go project appengine, appcfg.py , dev_appserver.py tools used compile project

that works fine when *.go files in 1 folder, how can project be compiled when code divided subfolders- yet need access functions , constants eachother?

in go- subfolders definition package boundaries, , can't see way allow appengine tools compile multiple packages before testing or deploying, 1 project.

advice on how tackle this- other keeping in 1 folder, appreciated. if solution approach 1 package (folder) @ time, advice on how structure quick iteration on 1 project uses packages appreciated. thanks!

there no magic here. make sure each of go files placed in folder , not in root of appengine project.

for example:

-[project root]     app.yaml     -[packagea]         packagea.go         -[packageab]             packageab.go     -[packageb]             packageb.go 

in example above, package declarations should follows:

• packagea.go:

  package packagea 

• packageab.go

  package packageab 

• packageb.go

  package packageb 

and example if packageb uses both packagea , packageab, import them as:

• packageb.go:

  import (     "packagea"     "packagea/packageab" ) 

note:

note cannot create import cycle (e.g. packagea imports packageb, , packageb imports packagea):

spec: import declarations

an import declaration declares dependency relation between importing , imported package. illegal package import itself, directly or indirectly.

you have structure code , packages avoid import cycles or code not compile.