Go list returning directory starting with underscore on Ubuntu

[Michel Hollands]

Hello,

When running go list on Ubuntu the results are weird:

michel@michel-VirtualBox:~/git/grpcurl$ go list .

_/home/michel/git/grpcurl

michel@michel-VirtualBox:~/git/grpcurl$ 

Running the same on the Mac returns just grpcurl, which is the correct package.

The Go version is: 

go version go1.10 linux/amd64

The Ubuntu is 16.04.4 LTS which was freshly installed.

Any ideas about what could be wrong?

Thanks in advance,

Michel

[Sebastien Binet]

Hi Michel,

I believe this is because you ran 'go list' from a directory outside of $GOPATH.

-s

sent from my droid

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[Michel Hollands]

Hello Sebastien,

After setting GOPATH it still occurs.

Thanks,

Michel 

[Sebastien Binet]

Michel,

Could you post the output of 'go env' and the name of the directory from which you re-ran 'go list'?

-s

sent from my droid

[Michel Hollands]

My mistake: there was no src directory under the gopath. It works now.

[run...@uber.com]

Even with GOPATH set correctly, this can happen if you're running `go list ./...` and any directory in your current path is called `testdata`. ie. 

```

$ pwd

/home/user/xyz/testdata/whatever/

$ go list ./...
_/home/user/xyz/testdata/whatever/xxx

```

[Dave Cheney]

If the path start with _ then it is not within the list of directories in your GOPATH.

[run...@uber.com]

Not accurate. 

$ cat ~/code/scratch/repro-underscore-issue.sh

echo "GOPATH: $GOPATH"

mkdir -p $GOPATH/src/github.com/testcase/testdata

echo "package testdata" > $GOPATH/src/github.com/testcase/testdata/testdata.go

echo "" >> $GOPATH/src/github.com/testcase/testdata/testdata.go

cd $GOPATH/src/github.com/testcase/testdata

echo "Running go list ./..."

go list ./...

$ ~/code/scratch/repro-underscore-issue.sh

GOPATH: /Users/prungta/code/gocode

Running go list ./...

_/Users/prungta/code/gocode/src/github.com/testcase/testdata

Should this be a bug report? 

[Daniel Martí]

I've encountered similar behavior with testdata directories within GOPATH,

when not in module-aware mode.

I found this thread while searching for answers, so I'm linking the issue I just

created in case anyone else runs into the same bug:

https://github.com/golang/go/issues/28155

[ipob...@kdu.cl]

Hi, I have the same problem, but I just want to scan my custom packages, when I do the go list. / ... it returns the correct routes, but with the underscore at the beginning of the routes, it is worth noting that the project does not have it inside the $ GOPATH (my $ GOPATH is in $ HOME / go)

[tatsuya...@nftlearning.com]

I don't know it helps as I'm on zshell.  I replaced `GOPATH=~/works/golang` with `export GOPATH=~/works/golang`. then, it fixed.

Before

% go list ./server/...

_/Users/myuser/works/golang/src/mattermost-plugin-dialect/src/server

After

% go list ./server/...

mattermost-plugin-dialect/src/server

[ufuk.o...@gmail.com]

Seeing paths that begin with "_" in the go list output means those modules are not in your GOPATH. In my case, I was collecting list of modules in a subshell (i.e. $(shell)) which doesn't have my GOPATH. If I run my go list command via backtick then it can use the global GOPATH define and works fine.