gqlgen init error in loading gqlparser.

[KellyLSB]

What happened?

kellylsbkr@penguin:~/go/src/github.com/KellyLSB/angelrin$ go run github.com/99designs/gqlgen init
validation failed: packages.Load: graph/generated/generated.go:16:2: cannot find package "github.com/vektah/gqlparser/v2" in any of:
        /usr/local/go/src/github.com/vektah/gqlparser/v2 (from $GOROOT)
        /home/kellylsbkr/go/src/github.com/vektah/gqlparser/v2 (from $GOPATH)
graph/generated/generated.go:17:2: cannot find package "github.com/vektah/gqlparser/v2/ast" in any of:
        /usr/local/go/src/github.com/vektah/gqlparser/v2/ast (from $GOROOT)
        /home/kellylsbkr/go/src/github.com/vektah/gqlparser/v2/ast (from $GOPATH)
/home/kellylsbkr/go/src/github.com/KellyLSB/angelrin/graph/generated/generated.go:16:12: could not import github.com/vektah/gqlparser/v2 (invalid package name: "")
/home/kellylsbkr/go/src/github.com/KellyLSB/angelrin/graph/generated/generated.go:17:2: could not import github.com/vektah/gqlparser/v2/ast (invalid package name: "")

Exec "go run ./server.go" to start GraphQL server

What did you expect?

A v2 directory within gqlparser; or... something

Minimal graphql.schema and models to reproduce

This is the project init

versions

• gqlgen version? master
• go version? go1.15.5 linux/amd64
• dep or go modules? neither, yet

This has not been a problem in my older application of gqlgen; merely the new init.

[diffuse]

This is referenced in #1105, if you look at the go.mod file for gqlgen, you can see that the module is defined as github.com/vektah/gqlparser/v2.

Like #1105 says, if you're not running in go module mode, I believe $GOPATH/src is searched for github.com/vektah/gqlparser/v2, which won't exist, since go get downloads it to github.com/vektah/gqlparser

If you're ok with using go module mode, then an easy fix for it is to:

• run go mod init in your project root, which will create a go.mod file
• re-run go run github.com/99designs/gqlgen init which should now work without that error
• this command should also add the appropriate modules to the require list in the project go.mod file

If your project is called foo, your go.mod file will end up looking something like this:

module github.com/<your username>/foo

go 1.15

require (
	github.com/99designs/gqlgen v0.13.0
	github.com/vektah/gqlparser/v2 v2.1.0
)

When you run go install ./..., your other dependencies should also be automatically added to this file.

Your previous application probably used a sub-2.0 version of gqlgen, which would have the module defined without the v2 (go.mod)

[frederikhors]

If @diffuse's answer solves it please close this issue, @KellyLSB.

[KellyLSB]

Presently:

kellylsbkr@penguin:~/go/src/github.com/KellyLSB/demondin$ go run github.com/99designs/gqlgen init
package github.com/99designs/gqlgen: no Go files in /home/kellylsbkr/go/src/github.com/KellyLSB/demondin/vendor/github.com/99designs/gqlgen
kellylsbkr@penguin:~/go/src/github.com/KellyLSB/demondin$ ls vendor/github.com/99designs/gqlgen/
complexity  graphql  handler  LICENSE

I've run go mod init && go mod vendor

go.mod

module github.com/KellyLSB/demondin

go 1.15

require (
	github.com/99designs/gqlgen v0.13.0
	github.com/agnivade/levenshtein v1.1.0 // indirect
	github.com/araddon/dateparse v0.0.0-20201001162425-8aadafed4dc4
	github.com/go-macaron/inject v0.0.0-20200308113650-138e5925c53b // indirect
	github.com/go-macaron/session v1.0.1
	github.com/gobuffalo/flect v0.2.2
	github.com/google/uuid v1.1.2
	github.com/gorilla/websocket v1.4.2
	github.com/hashicorp/golang-lru v0.5.4 // indirect
	github.com/jinzhu/gorm v1.9.16
	github.com/joho/godotenv v1.3.0
	github.com/kr/pretty v0.2.1
	github.com/kr/text v0.2.0 // indirect
	github.com/lib/pq v1.8.0
	github.com/stripe/stripe-go v56.1.0+incompatible
	github.com/vektah/gqlparser v1.3.1
	golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9 // indirect
	golang.org/x/net v0.0.0-20201021035429-f5854403a974 // indirect
	gopkg.in/ini.v1 v1.62.0 // indirect
	gopkg.in/macaron.v1 v1.4.0
	gopkg.in/yaml.v2 v2.3.0
)

go run -mod=mod github.com/99designs/gqlgen works

[rokiyama]

I have had the same issue, I have run go get github.com/vektah/gqlparser/v2 but I still get the another error.

$ go run github.com/99designs/gqlgen init
validation failed: packages.Load: /Users/rokiyama/projects/gqlgen-todos/graph/prelude.resolvers.go:19:44: __DirectiveResolver not exported by package generated

full logs:

$ mkdir gqlgen-todos
$ cd gqlgen-todos
$ go mod init github.com/rokiyama/gqlgen-todos
go: creating new go.mod: module github.com/rokiyama/gqlgen-todos

$ go get github.com/99designs/gqlgen
go get: added github.com/99designs/gqlgen v0.13.0

$ go get github.com/vektah/gqlparser/v2
go get: upgraded github.com/vektah/gqlparser/v2 v2.1.0 => v2.2.0

$ go run github.com/99designs/gqlgen init
validation failed: packages.Load: /Users/rokiyama/projects/gqlgen-todos/graph/prelude.resolvers.go:19:44: __DirectiveResolver not exported by package generated

Exec "go run ./server.go" to start GraphQL server

$ go run ./server.go
# github.com/rokiyama/gqlgen-todos/graph
graph/prelude.resolvers.go:19:34: cannot refer to unexported name generated.__DirectiveResolver

my go.mod:

module github.com/rokiyama/gqlgen-todos

go 1.16

require (
        github.com/99designs/gqlgen v0.13.0 // indirect
        github.com/vektah/gqlparser/v2 v2.2.0 // indirect
)

[diffuse]

Looks like this may be an issue with gqlparser v2.2.0 (released 8 days ago as of this post). I haven't looked into the specifics, but I just was able to replicate the behavior you mention on my system, then fix it with the resolution mentioned here.

Basically, in your go.mod file:

• rollback the version of gqlparser from github.com/vektah/gqlparser/v2 v2.2.0 to github.com/vektah/gqlparser/v2 v2.1.0
• delete graph/prelude.resolvers.go
• rerun go run github.com/99designs/gqlgen init

Credit to FreezeLook for this solution.

[diffuse]

Looks like this change is being discussed over in vektah/gqlparser#154.

[rokiyama]

@diffuse The solution worked for me. Thank you.

[wangzuo]

I guess https://github.com/99designs/gqlgen/blob/master/graphql/introspection/introspection.go#L12 is missing in v0.13.0, so a new release will fix this issue #1534.
go get github.com/99designs/gqlgen@master will also work for now.

[frederikhors]

@KellyLSB please tell me if this is still an issue with v0.16.0 and I'll re-open it.