x/tools/gopls: autoimport keeps importing the wrong package

[Zyl9393]

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

$ go version
go version go1.16.3 windows/amd64
$ gopls version
golang.org/x/tools/gopls v0.6.11
    golang.org/x/tools/[email protected] h1:7S2k0xuVYc3secjy2uz0n+fGYxGJU6gXsLOmQ/r1HoI=

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
set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\Zyl\AppData\Local\go-build
set GOENV=C:\Users\Zyl\AppData\Roaming\go\env
set GOEXE=.exe
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=D:\Projects\Code\Go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=D:\Projects\Code\Go
set GOPRIVATE=
set GOPROXY=https://proxy.golang.org,direct
set GOROOT=C:\Program Files\Go
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.16.3
set GCCGO=gccgo
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=NUL
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\Zyl\AppData\Local\Temp\go-build1411503252=/tmp/go-build -gno-record-gcc-switches

What did you do?

In a newly added .go file, write a function which refers to the OpenGL package gl, which does not yet have a matching import-statement in the file, such as:

func glFontAtlas(img []byte, w, h int) (texId uint32) {
	gl.ActiveTexture(gl.TEXTURE0)
	gl.GenTextures(1, &texId)
	gl.BindTexture(gl.TEXTURE_2D, texId)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.SRGB8, int32(w), int32(h), 0, gl.RED, gl.UNSIGNED_BYTE, unsafe.Pointer(&img[0]))
	gl.GenerateMipmap(gl.TEXTURE_2D)
	return texId
}

Then save the file.

What did you expect to see?

The package to be auto-imported (save action) by the same path already used in many other .go files within the workspace, namely:
"github.com/go-gl/gl/v3.3-core/gl"

What did you see instead?

The following import is being added automatically instead:
"github.com/go-gl/gl/v2.1/gl"

[stamblerre]

Thank you for this report! I believe this is actually already a known issue, tracked in #36077. Specifically, see the comment here: #36077 (comment). I will close this issue as a duplicate.