modules: Set GO111MODULE=on

Fixes #6114

diff --git a/modules/client.go b/modules/client.go
index ac09721dce174f7b397bb00b2835dcc90266ef17..12c9ecffc15e6fa47bf1c171b957df6f45abd71f 100644 (file)
--- a/modules/client.go
+++ b/modules/client.go
@@ -79,6 +79,7 @@ func NewClient(cfg ClientConfig) *Client {
 
        config.SetEnvVars(&env,
                "PWD", cfg.WorkingDir,
+               "GO111MODULE", "on",
                "GOPROXY", mcfg.Proxy,
                "GOPRIVATE", mcfg.Private,
                "GONOPROXY", mcfg.NoProxy)