Incompatible API version with plugin. Plugin version: 2, Ours: 1

[Svend Sorensen]

I'm getting the following error when building and running the dummy provider plugin plugin.

Incompatible API version with plugin. Plugin version: 2, Ours: 1

I have terraform v0.2.2 checked out and built, and I have been unable to figure why the plugin is building as v2.

Plugin code is here: https://github.com/svend/terraform-provider-dummy/tree/823a5e81ed3b646da329e645467c2e7d0c62a5a4

Commands I am using to build are:

rm -rf $GOPATH
go get -u github.com/mitchellh/gox
git clone https://github.com/hashicorp/terraform.git $GOPATH/src/github.com/hashicorp/terraform
cd $GOPATH/src/github.com/hashicorp/terraform
git checkout -b v0.2.2-branch v0.2.2
make updatedeps
make
make dev
git clone https://github.com/svend/terraform-provider-dummy.git $GOPATH/src/github.com/svend/terraform-provider-dummy
cd $GOPATH/src/github.com/svend/terraform-provider-dummy
go build -o terraform-provider-dummy
terraform plan

Full output is here: https://gist.github.com/svend/7db925c89a4876e5ff06

Here is the build environment and package versions.

echo $GOPATH
/Users/ssorensen/gocode
which terraform
/Users/ssorensen/gocode/bin/terraform
terraform --version
Terraform v0.2.2
cd $GOPATH/src/github.com/hashicorp/terraform; git describe --tags
v0.2.2
grep 'const APIVersion' $GOPATH/src/github.com/hashicorp/terraform/plugin/server.go
const APIVersion = "1" 

[Mitchell Hashimoto]

Svend,

The problem is because Go is unfortunately picking up the latest
version (master). That is quite annoying. The only solution I can
think of is to go into $GOPATH/src/github.com/hashicorp/terraform and
manually `git checkout v0.2.2` to match the versions.

Terraform 0.3 is actually not too far off now....

Best,
Mitchell

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[Svend Sorensen]

I am checking out v0.2.2 in my build script.

cd $GOPATH/src/github.com/hashicorp/terraform
git checkout -b v0.2.2-branch v0.2.2

https://gist.github.com/svend/7db925c89a4876e5ff06/a3ef1aeae0212307cf7f56aacddfcb69da2838a9#file-build-commands-txt-L6

When the build script completes, the terraform git checkout is at v0.2.2.

cd $GOPATH/src/github.com/hashicorp/terraform; git describe --tags

v0.2.2

https://gist.github.com/svend/7db925c89a4876e5ff06/a3ef1aeae0212307cf7f56aacddfcb69da2838a9#file-environment-txt-L6

Someone on #terraform-tool tried the same build commands, and it worked for them. I'm not sure what is wrong with my setup.

Thanks,

Svend

[Mitchell Hashimoto]

Svend,

I can see this isn't happening (or not obviously happening), but if
you're somehow calling `go get` anywhere in there, I think that resets
to master. :-\ I see you're checking before/after though so I don't
know.

There are some shenanigans happening somewhere.

Best,
Mitchell

> https://groups.google.com/d/msgid/terraform-tool/b4cd8648-c3a0-4cc6-83b4-7702e8ba3796%40googlegroups.com.

[Svend Sorensen]

Copying the terraform-provider-dummy binary to $GOPATH/bin, which is in my PATH fixed the error. If I remove it from that directory, the API mismatch error comes back.

I missed that step from the blog post, and the error message was confusing me, since it seemed to be loading the plugin from the CWD (just with an API mismatch).

Thanks to svanharmelen on IRC for getting me sorted out.

Svend