x/tools/cmd/gopls: file is not part of package

[jeanbza]

Reproduces with gopls@master and gopls@latest:

golang.org/x/tools/gopls v0.1.0
    golang.org/x/tools/gopls@v0.1.2-0.20190708203411-c8855242db9c h1:qFHl9H1pFOvam5c7rRNiSVPuASu5sS/VNZUj7KNAyGI=

and

$ gopls version
golang.org/x/tools/gopls v0.1.0
    golang.org/x/tools/gopls@v0.1.1 h1:mU/O8r53RjzdZfkqmFOX4iEt8PJxTPXyLdiuQNa27OE=

Steps to reproduce:

1. Create folder
2. Create a.go:

   package main
   
   type whatever struct{}
   

3. Create b.go:

   package main
   
   import "fmt"
   
   func main() {
    w := whatever{}
    fmt.Println("whatever", w)
   }
   

This compiles and runs fine, but in vscode with gopls I get a red squiggly over package with the error:

file:///usr/local/google/home/deklerk/workspace/interview-questions/foo/b.go is not part of a package LSP

[stamblerre]

Are you able to reproduce this if the package name is not main?

[jeanbza]

IIRC yes - I actually found it on a non-main package and recreated it with main.

[llbec]

I got this error too. This error has gone when I reopen vscode, but it will come out at an other new open file.

[stamblerre]

@llbox: What version of gopls are you using (gopls version)? Can you update to the latest version (go get golang.org/x/tools/gopls@latest) and confirm that you still see this issue?

[mthie]

$ gopls version
version v0.1.3-cmd.gopls, built in $GOPATH mode

Even after git pull on master branch the message still occurs. Also in vim-go.

[jamiebarnett]

I am also having this issue. Compiles fine but get an error that won't go away unless VS Code is restarted. from VS Code gopls log;

[Error - 10:29:21] unable to check package for file:///xxxxx/pkg/sites/sites.go: loadParseTypeCheck: no package found for /xxxxx/pkg/sites/sites.go
[Error - 10:29:21] Request textDocument/hover failed.
  Message: no AST for file:///xxxxx/pkg/sites/sites.go
  Code: 0 

version v0.1.0-cmd.gopls, built in $GOPATH mode

[linguohua]

version v0.1.3-cmd.gopls, built in $GOPATH mode.
Has the same problem both on windows and linux

[mthie]

When I check it manually, not via IDE:

/my/path $ gopls check myfile.go

2019/07/11 15:28:58 Error:unable to check package for file:///my/path/myfile.go: loadParseTypecheck: no metadata found for /my/path/myfile.go
2019/07/11 15:28:58 Error:unable to check package for file:///my/path/myfile.go: loadParseTypecheck: no metadata found for /my/path/myfile.go
/my/path/myfile.go: file:///my/path/myfile.go is not part of a package

[malexdev]

I am also having this issue.

Sometimes restarting the language server will resolve the issue, but then it will come back seemingly at random. The only thing that seems to permanently resolve the issue for a newly created file is to reload VS Code.

This is using modules.

[stamblerre]

@mthie, @jamiebarnett, @linguohua, @malexdev - could you share a full gopls log? It would be easier for me to understand the issue to see a log that starts from the beginning. Also, if you are using VSCode, please share your VSCode settings.

[mthie]

Well, I thought, I already posted the full log ;)
Here's a verbose output:

$ gopls -v check myfile.go
2019/07/11 18:48:08 Info:Build info
----------
version v0.1.3-cmd.gopls, built in $GOPATH mode

Go info
-------
go version go1.12.6 linux/amd64

GOARCH="amd64"
GOBIN=""
GOCACHE="/home/mthie/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/mthie/go"
GOPROXY=""
GORACE=""
GOROOT="/opt/go"
GOTMPDIR=""
GOTOOLDIR="/opt/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
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-build237434352=/tmp/go-build -gno-record-gcc-switches"
2019/07/11 18:48:08 Error:unable to check package for file:///home/mthie/go/src/github.com/mthie/mylib/myfile.go: loadParseTypecheck: no metadata found for /home/mthie/go/src/github.com/mthie/mylib/myfile.go
2019/07/11 18:48:08 Error:unable to check package for file:///home/mthie/go/src/github.com/mthie/mylib/myfile.go: loadParseTypecheck: no metadata found for /home/mthie/go/src/github.com/mthie/mylib/myfile.go
/home/mthie/go/src/github.com/mthie/mylib/myfile.go: file:///home/mthie/go/src/github.com/mthie/mylib/myfile.go is not part of a package

[stamblerre]

Thanks for sharing all of it, I didn't realize you were using gopls on the command line. What happens when you run go list -e -json -compiled -test /home/mthie/go/src/github.com/mthie/mylib?