x/tools/gopls: gopls compiles after every newstart on large projects

[webracer999]

gopls version

Build info
----------
golang.org/x/tools/gopls v0.8.4
    golang.org/x/tools/gopls@v0.8.4 h1:zGZsAXAb0LLws/Z+2BCWR17dkPHhIO2GYwYSSkeXX5c=
    github.com/BurntSushi/toml@v1.0.0 h1:dtDWrepsVPfW9H/4y7dDgFc2MBUSeJhlaDtK13CxFlU=
    github.com/google/go-cmp@v0.5.7 h1:81/ik6ipDQS2aGcBfIN5dHDB36BwrStyeAQquSYCV4o=
    github.com/sergi/go-diff@v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
    golang.org/x/exp/typeparams@v0.0.0-20220218215828-6cf2b201936e h1:qyrTQ++p1afMkO4DPEeLGq/3oTsdlvdH4vqZUBWzUKM=
    golang.org/x/mod@v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
    golang.org/x/sync@v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
    golang.org/x/sys@v0.0.0-20220209214540-3681064d5158 h1:rm+CHSpPEEW2IsXUib1ThaHIjuBVZjxNgSKmBLFfD4c=
    golang.org/x/text@v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
    golang.org/x/tools@v0.1.11-0.20220513164230-dfee1649af67 h1:CJwk4qG1fov4WP7/DWhhb7OQVZlQKAl1rEMnDF+ceGU=
    golang.org/x/vuln@v0.0.0-20220503210553-a5481fb0c8be h1:jokAF1mfylAi1iTQx7C44B7vyXUcSEMw8eDv0PzNu8s=
    honnef.co/go/tools@v0.3.0 h1:2LdYUZ7CIxnYgskbUZfY7FPggmqnh6shBqfWa8Tn3XU=
    mvdan.cc/gofumpt@v0.3.0 h1:kTojdZo9AcEYbQYhGuLf/zszYthRdhDNDUi2JKTxas4=
    mvdan.cc/xurls/v2@v2.4.0 h1:tzxjVAj+wSBmDcF6zBB7/myTy3gX9xvi8Tyr28AuQgc=
go: go1.18.3

go env

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/user/.cache/go-build"
GOENV="/home/user/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/user/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/user/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/home/user/bin/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/user/bin/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.18.3"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
GOWORK=""
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-build4240506006=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Open folder https://github.com/diamondburned/gotk4-examples/tree/master/gtk4/treeview with VS Code (v1.68.0).

First time it takes a long time, while gopls is compiling -> ok.
But after each restart of vs code, gopls is compiling over minutes again.

pstree:

code-+-gopls-+-go-+-cgo-+-gcc---cc1
     |       |    |     `-10*[{cgo}]
     |       |    `-15*[{go}]
     |       `-9*[{gopls}]

What did you expect to see?

I expected that gopls caches the build of the large package gotk4 (github.com/diamondburned/gotk4/pkg) somehow. Like go build does.

What did you see instead?

After each start of vs code I have to wait a very long time to get code completion in vs code.

Editor and settings

VS Code (v1.68.0)

[findleyr]

Gopls now persists package information across sessions, thanks to #57987. This is available in the prerelease gopls@v0.12.0-pre.1.