doc/tutorial/call-module-code: recap the directory structure from the previous step?

[bcetienne]

What version of Go are you using (go version)?

$ go version go1.15.2 darwin/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/etienne/Library/Caches/go-build"
GOENV="/Users/etienne/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/etienne/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/etienne/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/etienne/Desktop/greetings/hello/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/sb/6q_vnpy53xn95mr4kj7h9lvc0000gq/T/go-build921607341=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

I followed the guidelines for learning Go on the official website.
I first did this part which is not a problem (https://golang.org/doc/tutorial/create-module) but in the second part (https://golang.org/doc/tutorial/call-module-code), the build command from the hello directory doesn't work.

I tried again just copying and pasting the provided code but nothing changes.

Here is my go.mod file in the hello directory.

module hello

go 1.15

replace example.com/greetings => ../greetings

Here is my structure

What did you expect to see?

$ go build
go: found example.com/greetings in example.com/greetings v0.0.0-00010101000000-000000000000

What did you see instead?

$ go build
hello.go:6:2: example.com/greetings@v0.0.0-00010101000000-000000000000: replacement directory ../greetings does not exist

[seankhliao]

going up from hello ../ you're in the greetings directory, then you try to go down a level into a directory that does not exist greetings

see https://github.com/golang/go/wiki/Questions for the appropriate places to ask questions

[bcmills]

The go command is working as designed here, but that tutorial is fairly new — perhaps it could be adjusted to make this sort of mistake less likely.

(CC @stevetraut)

[stevetraut]

Thanks, folks. I'll take a look.

[stevetraut]

Hm. Step one in https://golang.org/doc/tutorial/call-module-code has the following, which is intended to cd up from where you were in the preceding topic (greetings) and create a hello directory at the same level as greetings. Maybe that first step needs to reestablish context from the preceding topic.

cd ..
mkdir hello
cd hello

[bcetienne]

Hi everyone, thank you for taking the time to read my concern.
For more precision, I really followed the tutorial step by step and I executed the build command from the greetings/hello directory (the return I put in my original message), seeing that it didn't work I also tried (out of curiosity) from the root folder but as I imagined it didn't work any more.

I don't know if this helps you any more...

[SaltyCoco]

This is an old issue however I had the same issue so here is what I found to be the answer.

You need to make a parent directory for both greetings and hello, like so;

I made a GreetingsProject folder and then had a hello folder and a greetings folder. The "require" from the mod file in the file was auto generated by the command. If you look at the replace you can see they are going up one directory to find a folder named greetings.

[stevetraut]

So this statement from https://golang.org/doc/tutorial/call-module-code doesn't make it clear that you might be in the greetings folder?

"For example, if your current directory in the command prompt is the greetings directory, you could use the following commands:"

Could you suggest wording that might make it clear?

[hjctop1]

@stevetraut
hi, for go 1.16, i tried "https://golang.google.cn/doc/tutorial/call-module-code", got same error
under hello dir, use "go mod tidy", then "go build"
this works for me, hope it works for you

[stevetraut]

@hjctop1 @bcetienne See if the changes in this CL address your issues. They're due to be published before too long.

https://go-review.googlesource.com/c/website/+/297531/7/_content/doc/tutorial/call-module-code.html

[Nyamador]

I'm using go 1.16 on linux . Running go get example.com/greetings with the replace directive (example.com/greetings => ../greetings) added in my go.mod file automatically added the require directive ( require example.com/greetings v0.0.0-00010101000000-000000000000 ). I hope this helps 😄