fix: Add warning for missing Go toolchain to README (#151)

From Go 1.20 golang no longer ships the precompiled standard library, which means that you must use `go_toolchain` or `go_system_toolchain`
please-build · Sep 30, 2023 · f9785d3 · f9785d3
1 parent ebd1e32
commit f9785d3
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -76,3 +76,5 @@ go_binary(
 
 Go is especially well suited to writing command line tools and utilities. Binaries can be ran with `plz run`, or used 
 as a tool for other [custom rules](https://please.build/codelabs/genrule/#0). 
+
+**WARNING: From Go 1.20, Golang no longer ships the precompiled standard library and thus you MUST use `go_toolchain` or `go_system_toolchain`.**