Don't run examples in Go 1.21 yet

Revert this commit when we release a new go-libp2p version compatible with Go 1.21
libp2p · Aug 15, 2023 · 9e1f3fc · 9e1f3fc
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diff --git a/examples/chat-with-mdns/flags.go b/examples/chat-with-mdns/flags.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/chat-with-mdns/main.go b/examples/chat-with-mdns/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/chat-with-mdns/mdns.go b/examples/chat-with-mdns/mdns.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/chat-with-rendezvous/chat.go b/examples/chat-with-rendezvous/chat.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/chat-with-rendezvous/flags.go b/examples/chat-with-rendezvous/flags.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/chat/chat.go b/examples/chat/chat.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 /*
  *
  * The MIT License (MIT)

diff --git a/examples/chat/chat_test.go b/examples/chat/chat_test.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/echo/main.go b/examples/echo/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/echo/main_test.go b/examples/echo/main_test.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/go_121_workaround_test.go b/examples/go_121_workaround_test.go
@@ -0,0 +1,8 @@
+//go:build go1.21
+
+package main
+
+import "testing"
+
+// Needed so that we run at least one test in Go 1.21 so that our go test command exits successfully
+func TestNothing(t *testing.T) {}
diff --git a/examples/http-proxy/proxy.go b/examples/http-proxy/proxy.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/01-Transports/main.go b/examples/ipfs-camp-2019/01-Transports/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/02-Multiaddrs/main.go b/examples/ipfs-camp-2019/02-Multiaddrs/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/03-Muxing-Encryption/main.go b/examples/ipfs-camp-2019/03-Muxing-Encryption/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/05-Discovery/main.go b/examples/ipfs-camp-2019/05-Discovery/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/05-Discovery/protocol.go b/examples/ipfs-camp-2019/05-Discovery/protocol.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/06-Pubsub/main.go b/examples/ipfs-camp-2019/06-Pubsub/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/06-Pubsub/protocol.go b/examples/ipfs-camp-2019/06-Pubsub/protocol.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/07-Messaging/chat.pb.go b/examples/ipfs-camp-2019/07-Messaging/chat.pb.go
diff --git a/examples/ipfs-camp-2019/07-Messaging/main.go b/examples/ipfs-camp-2019/07-Messaging/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/07-Messaging/protocol.go b/examples/ipfs-camp-2019/07-Messaging/protocol.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/07-Messaging/pubsub.go b/examples/ipfs-camp-2019/07-Messaging/pubsub.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/08-End/chat.pb.go b/examples/ipfs-camp-2019/08-End/chat.pb.go
diff --git a/examples/ipfs-camp-2019/08-End/main.go b/examples/ipfs-camp-2019/08-End/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/08-End/protocol.go b/examples/ipfs-camp-2019/08-End/protocol.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/08-End/pubsub.go b/examples/ipfs-camp-2019/08-End/pubsub.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/ipfs-camp-2019/go_121_workaround_test.go b/examples/ipfs-camp-2019/go_121_workaround_test.go
@@ -0,0 +1,8 @@
+//go:build go1.21
+
+package main
+
+import "testing"
+
+// Needed so that we run at least one test in Go 1.21 so that our go test command exits successfully
+func TestNothing(t *testing.T) {}
diff --git a/examples/libp2p-host/host.go b/examples/libp2p-host/host.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/libp2p-host/host_test.go b/examples/libp2p-host/host_test.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/metrics-and-dashboards/main.go b/examples/metrics-and-dashboards/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/multipro/echo.go b/examples/multipro/echo.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/multipro/main.go b/examples/multipro/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/multipro/main_test.go b/examples/multipro/main_test.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/multipro/node.go b/examples/multipro/node.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/multipro/pb/p2p.pb.go b/examples/multipro/pb/p2p.pb.go
diff --git a/examples/multipro/ping.go b/examples/multipro/ping.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/pubsub/basic-chat-with-rendezvous/go_121_workaround_test.go b/examples/pubsub/basic-chat-with-rendezvous/go_121_workaround_test.go
@@ -0,0 +1,8 @@
+//go:build go1.21
+
+package main
+
+import "testing"
+
+// Needed so that we run at least one test in Go 1.21 so that our go test command exits successfully
+func TestNothing(t *testing.T) {}
diff --git a/examples/pubsub/basic-chat-with-rendezvous/main.go b/examples/pubsub/basic-chat-with-rendezvous/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/pubsub/chat/chatroom.go b/examples/pubsub/chat/chatroom.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/pubsub/chat/go_121_workaround_test.go b/examples/pubsub/chat/go_121_workaround_test.go
@@ -0,0 +1,8 @@
+//go:build go1.21
+
+package main
+
+import "testing"
+
+// Needed so that we run at least one test in Go 1.21 so that our go test command exits successfully
+func TestNothing(t *testing.T) {}
diff --git a/examples/pubsub/chat/main.go b/examples/pubsub/chat/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/pubsub/chat/ui.go b/examples/pubsub/chat/ui.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/relay/main.go b/examples/relay/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/relay/main_test.go b/examples/relay/main_test.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/routed-echo/bootstrap.go b/examples/routed-echo/bootstrap.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/routed-echo/main.go b/examples/routed-echo/main.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package main
 
 import (

diff --git a/examples/testutils/logharness.go b/examples/testutils/logharness.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package testutils
 
 import (

diff --git a/examples/testutils/net.go b/examples/testutils/net.go
@@ -1,3 +1,5 @@
+//go:build !go1.21
+
 package testutils
 
 import (