add dummy.go file with some tricks to make it "compile"

dummy-gcc

@@ -0,0 +1,13 @@
+#!/usr/bin/python3
+
+import subprocess
+import sys
+
+new_argv = []
+for arg in sys.argv[1:]:
+    if arg.endswith(".c") and not "main" in arg:
+        new_argv.append("dummy.c")
+    else:
+        new_argv.append(arg)
+
+subprocess.check_call(new_argv)

dummy-ld

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+"$@"
+
+echo "This is a fake go-build, it is not real. We are just doing this " 
+echo "to make this git tree available via `go get`."
+
+
+

dummy.c

@@ -0,0 +1 @@
+

dummy.go

@@ -0,0 +1,9 @@
+/*
+ * Dummy go file to make go get github.com/snapcore/squashfuse work
+ */
+
+package dummy
+
+// #cgo CFLAGS: -wrapper ./dummy-gcc
+// #cgo LDFLAGS: -wrapper ./dummy-ld
+import "C"