go: cannot find main module, but found .git config to create a module there, run: go mod

go: cannot find main module, but found .git/config to create a module there, run: go mod

This problem occurred in a monorepo opened in VSCode. The repo has many services placed in isolated directories with respective go.mod files.

I realized from various sources that the problem is from two places:

1. Move the mono repo under $GOPATH/src.
2. The ~/.zshrc or ~/.bashrc must be as follows:

   export GOPATH=$HOME/go/
   export GOROOT=/usr/local/go
   
   export PATH="$GOROOT/bin:$PATH"
   export PATH="$PATH:$GOPATH/bin"
   

Do not add any other variable that affects gopls such as GO111MODULE=on.

Written with StackEdit.

References

VSCode Plugins for Golang Development

1. Rich Go language support for Visual Studio Code
2. Theme: Dark Knight: A simple dark theme for Golang projects
3. Git Blame & Git History
4. Postfix templates for Golang
5. Adds go to implementation on context menu
6. All-language autocompleter — TabNine uses machine learning to help you write code faster.

This is a minimal list of Go development extensions in my opinion.

Top 5 VSCode Extensions for Vim Lovers

Vim Extensions

• vscodevim: Vim emulation for Visual Studio Code
• Better Align (: + = in visual mode)

Language Specific Extensions

C/C++

• C/C++ IntelliSense, debugging, and code browsing.
• Better C++: better-cpp-syntax

Golang

• Go Microsoft
• Go Group Imports
• Go Critic

Python

• Python Microsoft
• Python Extension Pack

Ruby

• Ruby for Visual Studio Code
• Rubocop
• Ruby Solargraph

Themes

• Github Plus
• Winter Is Coming (Light & Dark)