Unable to install columnify on MacOS w/ go get

[eredi93]

Following the README instructions, i'm trying to install columnify with go get. But i'm getting the following error:

⇒  GO111MODULE=off go get github.com/reproio/columnify/cmd/columnify                                                                      
package github.com/vmihailenco/msgpack/v4: cannot find package "github.com/vmihailenco/msgpack/v4" in any of:
        /usr/local/Cellar/go/1.14.4/libexec/src/github.com/vmihailenco/msgpack/v4 (from $GOROOT)
        /Users/XXX/.go/src/github.com/vmihailenco/msgpack/v4 (from $GOPATH)

[t2y]

I had the same error with GO111MODULE=off. It seems that GO111MODULE=on can build columnify binary into $GOPATH.

$ GO111MODULE=on go get -v github.com/reproio/columnify/cmd/columnify

I found some issues in vmihailenco/msgpack repository. The author suggests using Go Modules.

• Why use github.com/vmihailenco/msgpack/v4/codes? vmihailenco/msgpack#237
• how can I use version v4 if my project doesn't use the go module instead of gopath vmihailenco/msgpack#251

[t2y]

I think this is README bug, so I will send PR.

[eredi93]

thanks @t2y 🙇

[Mohitp98]

Worked for me-->

1. Run go get github.com/vmihailenco/msgpack to install the master branch (v5) into your GOPATH.
2. cd ~/go/src/github.com/vmihailenco/msgpack
3. git checkout v4 to switch to the v4 branch
4. cd - to return back to the directory you were working in before.
5. When using HCL, import it still as github.com/vmihailenco/msgpack instead of as github.com/vmihailenco/msgpack/v4

These above steps resolved the import error!