From ea26d95c5eaadca0a2bf77ae10a4b189f7bff825 Mon Sep 17 00:00:00 2001
From: Orca <whalevocal@gmail.com>
Date: Thu, 10 Aug 2023 21:28:14 +0800
Subject: [PATCH] Get Started: get rid of hard-coded versions in "Install
 Golang" chapter (#246)

---
 src/get-started/install-golang.md | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/src/get-started/install-golang.md b/src/get-started/install-golang.md
index a97b1bb4..347b9b0f 100644
--- a/src/get-started/install-golang.md
+++ b/src/get-started/install-golang.md
@@ -2,9 +2,17 @@
 
 To build TiDB from source code, you need to install Go in your development environment first. If Go is not installed yet, you can follow the instructions in this document for installation.
 
-## Install Go 1.20
+## Install Go
 
-Currently, TiDB uses Go 1.20 to compile the code. To install Go 1.20, go to [Go's download page](https://golang.org/dl/), choose version 1.20, and then follow the [installation instructions](https://golang.org/doc/install).
+TiDB periodically upgrades its Go version to keep up with Golang. Currently, upgrade plans are announced on [TiDB Internals forum](https://internals.tidb.io/tags/c/general/announcement).
+
+To get the right version of Go, take a look at the [`go.mod` file in TiDB's repository](https://github.com/pingcap/tidb/blob/master/go.mod). You should see that there is a line like `go 1.21` (the number may be different) in the first few lines of this file. You can also run the following command to get the Go version:
+
+```bash
+curl -s -S -L https://github.com/pingcap/tidb/blob/master/go.mod | grep -Eo "\"go [[:digit:]]+.[[:digit:]]+\""
+```
+
+Now that you've got the version number, go to [Go's download page](https://golang.org/dl/), choose the corresponding version, and then follow the [installation instructions](https://golang.org/doc/install).
 
 ## Manage the Go toolchain using gvm
 
@@ -16,19 +24,23 @@ To install gvm, run the following command:
 curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer | sh
 ```
 
-Once you have gvm installed, you can use it to manage multiple different Go compilers with different versions. Let's install Go 1.20 and set it as default:
+Once you have gvm installed, you can use it to manage multiple different Go compilers with different versions. Let's install the corresponding Go version and set it as default:
 
 ```bash
-gvm install go1.20
-gvm use go1.20 --default
+TIDB_GOVERSION=$(curl -s -S -L https://github.com/pingcap/tidb/blob/master/go.mod | grep -Eo "\"go [[:digit:]]+.[[:digit:]]+\"" | grep -Eo "[[:digit:]]+.[[:digit:]]+")
+gvm install go${TIDB_GOVERSION}
+gvm use go${TIDB_GOVERSION} --default
 ```
 
 Now, you can type `go version` in the shell to verify the installation:
 
 ```bash
 go version
+# Note: In your case, the version number might not be '1.21', it should be the
+#   same as the value of ${TIDB_GOVERSION}.
+#
 # OUTPUT:
-# go version go1.20 linux/amd64
+# go version go1.21 linux/amd64
 ```
 
 In the next chapter, you will learn how to obtain the TiDB source code and how to build it.