tree f6620dcada93bac1c484c0e279e5fd1938a0d05e
parent e08a6e0686921c5b54593cdb6b74709dc4c30a9f
author Dmitri Shuralyov <dmitshur@golang.org> 1551165514 -0500
committer Dmitri Shuralyov <dmitshur@golang.org> 1551195005 +0000

playground: use Go 1.12

Go 1.12 has been released¹ and should be used, so that it's possible
to play with Go programs that rely on Go 1.12-only features.

In Go 1.12, build cache is required. Either GOCACHE must be set,
or HOME must be set so that GOCACHE can be implicitly deduced.
Set HOME and pass it on to the go build invocation inside the
compileAndRun function.

This fixes the following error, detected by the playground test:

	2019/02/26 06:28:44 compile error: build cache is required, but could not
	be located: GOCACHE is not defined and neither $XDG_CACHE_HOME nor $HOME
	are defined
	The command '/bin/sh -c /app/playground test' returned a non-zero code: 1

This is related to issues golang/go#29243 and golang/go#29251,
and the fix in CL 154181.

¹ https://groups.google.com/d/msg/golang-announce/Y1RZqnCKUKY/N9yK5c8iBgAJ

Fixes golang/go#30397

Change-Id: I44c5c8928060732f31fd935b114568258c7298c7
Reviewed-on: https://go-review.googlesource.com/c/163798
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>