go get failed

[StephaneBunel]

From ubuntu 18.04 LTS:

$ apt-get install libglfw3-dev
$ go get github.com/esimov/diagram

# github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw
In file included from code/golang/gopath/src/github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw/c_glfw_linbsd.go:22:0:
code/golang/gopath/src/github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw/glfw/src/linux_joystick.c: In function ‘_glfwInitJoysticksLinux’:
code/golang/gopath/src/github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw/glfw/src/linux_joystick.c:224:42: warning: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size 9 [-Wformat-truncation=]
             snprintf(path, sizeof(path), "%s/%s", dirname, entry->d_name);
                                          ^~~~~~~
In file included from /usr/include/stdio.h:862:0,
                 from /usr/include/X11/Xcursor/Xcursor.h:26,
                 from code/golang/gopath/src/github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw/glfw/src/x11_platform.h:39,
                 from code/golang/gopath/src/github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw/glfw/src/internal.h:169,
                 from code/golang/gopath/src/github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw/glfw/src/x11_init.c:28,
                 from code/golang/gopath/src/github.com/esimov/diagram/vendor/github.com/go-gl/glfw/v3.2/glfw/c_glfw_linbsd.go:17:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: ‘__builtin___snprintf_chk’ output between 12 and 267 bytes into a destination of size 20
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[esimov]

Maybe it's related to this issue #7. The truth is I haven't tested on Ubuntu 18.