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x/tools/cmd/gopls: completions aren't provided for the "syscall/js" package #32892

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frou opened this issue Jul 2, 2019 · 3 comments
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x/tools/cmd/gopls: completions aren't provided for the "syscall/js" package #32892

frou opened this issue Jul 2, 2019 · 3 comments
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FrozenDueToAge gopls Issues related to the Go language server, gopls.
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Unreleased

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@frou
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frou commented Jul 2, 2019

Should completions for the "syscall/js" package be working? i.e. after importing it and typing js.

As you know, js is a kind of pseudo GOOS, and is not going to be equal to the OS the editor and gopls are running on (in my case, darwin). Regardless, we still need completions for this part of the standard library!

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

$ go version
go version go1.12.6 darwin/amd64

$ gopls version
version v0.1.1-cmd.gopls, built in $GOPATH mode

Sublime Text + LSP package

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

go env Output
$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/holmdunc/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/holmdunc/workspace/programming/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/Cellar/go/1.12.6/libexec"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.12.6/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/zn/dlsz3cn50kv_93ct2hbfhf6h0000gn/T/go-build564583090=/tmp/go-build -gno-record-gcc-switches -fno-common"
@gopherbot gopherbot added this to the Unreleased milestone Jul 2, 2019
@gopherbot gopherbot added the gopls Issues related to the Go language server, gopls. label Jul 2, 2019
@stamblerre
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This is really an effect of #29202. You can work around this for now by configuring buildFlags in your gopls settings (I am not sure how to do this in Sublime, but in VSCode, it would look like "gopls": {"buildFlags": [...]}). See https://github.com/golang/tools/blob/f80f67146e584e84e6c179fdb72a38f367331d6e/internal/lsp/general.go#L181.

Closing as duplicate of #29202.

@stamblerre stamblerre changed the title x/tools/cmd/gopls: Completions aren't provided for the "syscall/js" package x/tools/cmd/gopls: completions aren't provided for the "syscall/js" package Jul 2, 2019
@frou
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frou commented Jul 2, 2019

@stamblerre Thanks. It seems that the way Sublime's LSP sends settings is not supported by gopls yet: server: method "DidChangeConfiguration" not yet implemented

However, I did get the completion to work using this (LSP.sublime-settings file):

{
    "clients": {
        "gopls": {
            "enabled": true,
            // "settings": {
            //     "gopls": {
            //         "buildFlags": ["-tags", "js"]
            //   }
            // },
            "env": {
                "GOOS": "js",
                "GOARCH": "wasm",
            }
        }
    }
}

But for anyone else reading... as mentioned in the linked issue, it's not wise to have these kind of tweaks set globally.

@stamblerre
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Glad to hear you got it working! The DidChangeConfiguration error just means that you will need to restart Sublime after modifying configurations, but otherwise, the buildFlags should work.

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