internal/wayland: expose WAYLAND_VERSION

This might be useful troubleshooting information.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/outcome/outcome.go

@@ -11,10 +11,22 @@ import (
 	"hakurei.app/hst"
 	"hakurei.app/internal/acl"
 	"hakurei.app/internal/env"
+	"hakurei.app/internal/info"
 	"hakurei.app/internal/system"
+	"hakurei.app/internal/wayland"
 	"hakurei.app/message"
 )
 
+// Info returns the address to a populated [hst.Info].
+//
+// This must not be called from within package outcome.
+func Info() *hst.Info {
+	hi := hst.Info{WaylandVersion: wayland.Version,
+		Version: info.Version(), User: new(Hsu).MustID(nil)}
+	env.CopyPaths().Copy(&hi.Paths, hi.User)
+	return &hi
+}
+
 // envAllocSize is the initial size of the env map pre-allocated when the configured env map is nil.
 // It should be large enough to fit all insertions by outcomeOp.toContainer.
 const envAllocSize = 1 << 6

internal/wayland/wayland.go

@@ -9,6 +9,7 @@ package wayland
 #cgo freebsd openbsd LDFLAGS: -lwayland-client
 
 #include "wayland-client-helper.h"
+#include <wayland-version.h>
 */
 import "C"
 import (
@@ -17,6 +18,9 @@ import (
 )
 
 const (
+	// Version is the value of WAYLAND_VERSION.
+	Version = C.WAYLAND_VERSION
+
 	// Display contains the name of the server socket
 	// (https://gitlab.freedesktop.org/wayland/wayland/-/blob/1.23.1/src/wayland-client.c#L1147)
 	// which is concatenated with XDG_RUNTIME_DIR