How to Configure Visual Studio Code and Delve for Debugging Go with Build Tags?

Debugging Go with Tags in Visual Studio Code and Delve Debugger

Building and debugging Go programs with specific tags can simplify development workflows. However, configuring Visual Studio Code (VSCode) and the Delve debugger for this can be challenging.

To address this, Visual Studio Code recently introduced a new feature that allows specifying build tags in launch configurations. The key is buildFlags with a value of "-tags Tag".

For instance, if you're using a build tag THISISAFLAG, add the following to your launch.json file:

{
  "name": "DebugBinWithTag",
  "type": "go",
  "request": "launch",
  "mode": "exec",
  ...
  "buildFlags": "-tags THISISAFLAG"
  ...
}

If you have multiple build configurations, each requiring different tags, create separate launch configurations for each tag.

In addition to VSCode's built-in debugger, the Delve debugger also supports build tags. To use Delve with build tags, add the -tags flag when starting the debugging session:

$ delve run -tags THISISAFLAG

By utilizing these configuration options, you can efficiently build and debug Go programs using specific build tags, streamlining your development process.

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