installing with "go get" gives "go.mod file not found in current directory or any parent directory."

[kramer65]

Description

Coming from Python, I'm just starting out with go, so please forgive me my ignorance. I'm trying to install gocv using the instructions here: https://gocv.io/getting-started/linux/ . Unfortunately I'm getting errors saying that go get is no longer supported outside a module.

Steps to Reproduce

1. Tried to install it using the go get command:

kramer65@laptop:~$ go get -u -d gocv.io/x/gocv
go: go.mod file not found in current directory or any parent directory.
	'go get' is no longer supported outside a module.
	To build and install a command, use 'go install' with a version,
	like 'go install example.com/cmd@latest'
	For more information, see https://golang.org/doc/go-get-install-deprecation
	or run 'go help get' or 'go help install'.

2. I then tried installing using go install:

kramer65@laptop:~$ go install gocv.io/x/gocv@latest
package gocv.io/x/gocv is not a main package

3. And from here I'm kinda lost. Any tips are welcome.

Your Environment

• Operating System and version: Ubuntu 20.04
• OpenCV version used: None yet. Wanted to install it using the makefile
• How did you install OpenCV? Not yet
• GoCV version used: latest
• Go version: go1.18.5 linux/amd64
• Did you run the env.sh or env.cmd script before trying to go run or go build? No. I didn't reach that point yet.

[SleepyPrince]

You have to use go mod init YOUR_MODULE_NAME to initialize first.