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

$ go version
go version go1.13.4 linux/amd64

golang.org/x/tools/gopls v0.3.3
    golang.org/x/tools/gopls@v0.3.3 h1:mTFqRDJQmpSsgDDWvbtGnSva1z9uX2XcDszSWa6DhBQ=

Does this issue reproduce with the latest release?

Unknown, as a golang 1.14 package is not available for Ubuntu Xenial.

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

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/marc/.cache/go-build"
GOENV="/home/marc/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/mnt/c/Users/Marc/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/lib/go-1.13"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/go-1.13/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
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 -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build013358927=/tmp/go-build -gno-record-gcc-switches

What did you do?

I am using a Go project folder structure like this:

go-projects
├── npiperelay
│   ├── LICENSE
│   ├── npiperelay.go
│   ├── overlappedfile.go
│   ├── README.md
│   └── scripts
│       ├── docker-relay
│       ├── gpg-relay
│       ├── serial-relay
│       └── vmserial-connect
└── wsl-ssh-pageant
    ├── assets
    │   └── icon.ico
    ├── assets.go
    ├── azure-pipelines.yml
    ├── build.ps1
    ├── go.mod
    ├── go.sum
    ├── LICENSE
    ├── main.go
    ├── Readme.md

As you can see there is a go.mod file in the wsl-ssh-pageant project.

In Visual Studio Code I am opening the folder go-projects instead of the individual subfolders for reach project in order to quickly jump between them. You could think of it as my mono-repo-like approach with VSCode even though the individual projects are individual repos.

What did you expect to see?

I expected gopls to recognize the go.mod file in the wsl-ssh-pageant project.

What did you see instead?

Instead I am getting this error message:

You are neither in a module nor in your GOPATH. Please see https://github.com/golang/go/wiki/Modules for information on how to set up your Go project.