module that imports module error

[simon place]

i'm 'replacing' modules, for development, with local ones, this has worked fine.

but now i am importing a module that itself imports another replaced module, i get 

'go: cycle imports
modulo: malformed module path "modulo": missing dot in first path element

'

i thought module names were just anything unique, only after uploading a URL.

and

'modulo' module path "modulo" can't be malformed when it builds/runs when being tested etc.

[simon place]

also dotless domains are provided for in the standard.

[simon place]

OK surprising fix....

you have to 'replace' any 'replaced' sub-imports.

in a module which imports a module that is replacing a module it uses, needs to included that sub-replacement, even thought it isn't used directly, which is to me surprising/unnecessary?

so, AFAICT, in a module chain, that uses a replacement somewhere, all go.mod's above where that replacement is changed, (name or reference) would need to be edited to reflect this.

[Jason Phillips]

From the replace directive documentation:

> replace directives only apply in the main module’s go.mod file and are ignored in other modules

The main module is the only module with control of the dependency graph.