What is the output of go list -e -json -compiled ./... when you are in the /Users/mac/Documents/projects/myproject/test.com directory?

Hi @stamblerre thanks for responding. This is what I see

$ go list -e -json -compiled ./...

go build internal/unsafeheader: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/c0/c0e94ba9040544ec35c16499ee2905975dd7ec6b24e473a66a3aa2ec46e5f846-a: no such file or directory
go build unicode: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/f1/f119670a773db65c0815a7827d762943142c014aeb48566d2b9eaa52f9903efb-a: no such file or directory
go build unicode/utf8: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/95/9515ad0b3f4f5f63d1c4bbe8c238ad1345865fcc6118479bfddeec955a538a18-a: no such file or directory
go build internal/race: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/97/97a4861b18817b8085b8685e54051446a4204c01b709430231b4257afa1f25cc-a: no such file or directory
go build math/bits: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/1b/1b3caccfa06a6e29b2c6bdc528ffc5e7712931e997cb30d477c31e31f2a5dbee-a: no such file or directory
go build runtime/internal/sys: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/29/29773ae629eba8ce238a7697425861a0be9c007b61408c0172f688f609ded2d0-a: no such file or directory
go build internal/cpu: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/8c/8ca5bd8bd1572a5fecff05df9eeedf7d13b6c23a1320d5373a756df8d645e259-a: no such file or directory
go build runtime/internal/atomic: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/51/51a0ab315d5778b2f56dbc221a7220e3d1e24940a9424be9f5e4bd07e321b94b-a: no such file or directory
go build sync/atomic: loading compiled Go files from cache: reading srcfiles list: cache entry not found: open /Users/mac/Library/Caches/go-build/f7/f76980501818889a818e399f49f4438edc3b14656a4616df4853c031cee3aa0d-a: no such file or directory
{
	"Dir": "/Users/mac/Documents/projects/myproject/test.com",
	"ImportPath": "test.com",
	"Name": "main",
	"Target": "/Users/mac/go/bin/test.com",
	"Root": "/Users/mac/Documents/projects/myproject/test.com",
	"Module": {
		"Path": "test.com",
		"Main": true,
		"Dir": "/Users/mac/Documents/projects/myproject/test.com",
		"GoMod": "/Users/mac/Documents/projects/myproject/test.com/go.mod",
		"GoVersion": "1.15"
	},
	"Match": [
		"./..."
	],
	"GoFiles": [
		"main.go"
	],
	"Imports": [
		"fmt"
	],
	"Deps": [
		"errors",
		"fmt",
		"internal/bytealg",
		"internal/cpu",
		"internal/fmtsort",
		"internal/oserror",
		"internal/poll",
		"internal/race",
		"internal/reflectlite",
		"internal/syscall/execenv",
		"internal/syscall/unix",
		"internal/testlog",
		"internal/unsafeheader",
		"io",
		"math",
		"math/bits",
		"os",
		"reflect",
		"runtime",
		"runtime/internal/atomic",
		"runtime/internal/math",
		"runtime/internal/sys",
		"sort",
		"strconv",
		"sync",
		"sync/atomic",
		"syscall",
		"time",
		"unicode",
		"unicode/utf8",
		"unsafe"
	]
}

Thanks for sharing that output. My guess is that the issue is caused by the issues with the cache entries. Can you try running go clean -cache and then running the command again?

/cc @matloob @jayconrod @bcmills for further advice, especially since it seems like go/packages failed to pick up any packages with these error messages present

Yay!! I figured out what issue was

After I did go clean -cache and tried to build my app, it failed with the message

failed to initialize build cache at /Users/mac/Library/Caches/go-build: mkdir /Users/mac/Library/Caches/go-build/00: permission denied

After digging a bit I realized that go-build folder has root as its owner instead of $USER. I changed the owner to current user with the command sudo chown -R $USER ~/Library/Caches/go-build.

Now, everything works fine.

Thank you @stamblerre for your help!!

Yay!! I figured out what issue was

After I did go clean -cache and tried to build my app, it failed with the message

failed to initialize build cache at /Users/mac/Library/Caches/go-build: mkdir /Users/mac/Library/Caches/go-build/00: permission denied

After digging a bit I realized that go-build folder has root as its owner instead of $USER. I changed the owner to current user with the command sudo chown -R $USER ~/Library/Caches/go-build.

Now, everything works fine.

Thank you @stamblerre for your help!!

If your go.mod file is emitting an error like below, @meakkineni 's solution works. Just adding here for SEO because it took me a minute to find this solution.

err: exit status 1: stderr: open /Users/user/Library/Caches/go-build/06/066240853ccf3ef2eec69ad02fc2409017c16ff6647a58580712d77e96956f4f-d: permission denied
: packages.Load error

This error also happens if the file uses build tags, see #29202 (comment).

Trying the mentioned GOFLAGS workaround in Emacs with (setq-local process-environment '("GOFLAGS=-tags=<mytag>")) causes a different error: no views in session. 😕

Sorry to comment on a closed issue, but this is a huge deal for practically using gopls and all internet searches led me here. For anyone else on emacs that strolls through here, the solution @imiric gave didn't work for me. It appears to be replacing the entire environment with that one entry which breaks GOPATH. Therefore, I opted for setenv at a global scope which is then available to everything and only modifies/adds the one entry:

(setenv "GOFLAGS" "-tags=linux,windows")

This seems to let me interoperate between linux and windows tagged files. You could probably add darwin to the list if you need to work with MacOS as well, but I don't have that need at the moment. This doesn't seem to break anything else either. At least so far. 🤞

I have the same issue, go clean -cache did not help :(

~/Library/Caches/go-build

What is the path for Linux?

@vitaly-zdanevich

The path of the go-build cache in the Linux is $HOME/.cache/go-build

but in my case, applying chown to this directory was not helped.

hey, @computerphilosopher did you find a solution yet or are you living with it?

@dixler

In my case, I tried to navigate third-party module codes that are not installed yet. Running go install command at the project root solved my problem. But I have no idea about golang standard library.

I was getting this error in lunarvim. My project was using vendoring, and running go clean -cache && go mod vendor resolved the issue for me.