Bug#866802: neovim: FTBFS against msgpack-c 2.x

[James McCoy]

Source: neovim
Version: 0.1.7-4
Severity: important
Tags: upstream fixed-upstream
User: msgpack-c at packages.debian.org
Usertags: msgpack-c-2.x
Forwarded: https://github.com/neovim/neovim/pull/6406

While performing rebuilds of packages which Build-Depend on
libmsgpack-dev with the 2.x version in experimental, I found that neovim
FTBFS:

    not ok 1468 - ShaDa support code is able to dump and read back list variable automatically
    # ...r2/neovim-0.1.7/test/functional/shada/variables_spec.lua @ 26
    # Failure message: ...r2/neovim-0.1.7/test/functional/shada/variables_spec.lua:40: Expected objects to be the same.
    # Passed in:
    # (table) {
    #   [1] = {
    #     [a] = 10 }
    #  *[2] = {
    #    *[b] = userdata: 0x41e2bff0 }
    #   [3] = {
    #     [c] = 'str' } }
    # Expected:
    # (table) {
    #   [1] = {
    #     [a] = 10 }
    #  *[2] = {
    #    *[b] = 10.5 }
    #   [3] = {
    #     [c] = 'str' } }
    # stack traceback:
    # 	...r2/neovim-0.1.7/test/functional/shada/variables_spec.lua:40: in function <...r2/neovim-0.1.7/test/functional/shada/variables_spec.lua:27>
    # 

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

-- no debconf information