go-module.eclass: set a reasonable default for the go build cache

Signed-off-by: William Hubbs <williamh@gentoo.org>

diff --git a/eclass/go-module.eclass b/eclass/go-module.eclass
index 9c11959fdf84e66f112cc0e16497b100a0664687..89b32ed1201ba5e517e63f9fd5d568f399ee5d7c 100644 (file)
--- a/eclass/go-module.eclass
+++ b/eclass/go-module.eclass
@@ -59,6 +59,10 @@ BDEPEND=">=dev-lang/go-1.12"
 # this will become the default in the future.
 export GO111MODULE=on
 
+# Set the default for the go build cache
+# See "go help environment" for information on this setting
+export GOCACHE="${T}/go-build"
+
 # The following go flags should be used for all builds.
 # -mod=vendor stopps downloading of dependencies from the internet.
 # -v prints the names of packages as they are compiled