NeoVim: set signcolumn=number does not work. How to merge sign column with line number column?

Question

When I add set signcolumn=number in to init.vim I get this message on startup:

Error detected while processing ~/.config/nvim/init.vim:
line 17:
E474: Invalid argument: signcolumn=number
Press ENTER or type command to continue

How to merge signs column with line number column in NeoVim ?

My NeoVim version:

NVIM v0.4.4
Build type: Release
LuaJIT 2.0.5

Thank you for your help

Answer 1

Solution to this problem is to upgrade NeoVim to version 0.5.0. At the moment this version is not officially released. You can still install dev version.

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Installation guide

Windows

1. Extract nvim-win64.zip (or nvim-win32.zip)
2. Run nvim-qt.exe

MacOS

1. Download nvim-macos.tar.gz
2. Extract: tar xzvf nvim-macos.tar.gz
3. Run ./nvim-osx64/bin/nvim

Linux (x64)

1. Download nvim.appimage
2. Run chmod u+x nvim.appimage && ./nvim.appimage
3. If your system does not have FUSE you can extract the appimage:

./nvim.appimage --appimage-extract
./squashfs-root/usr/bin/nvim

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Official stable release is planed on Christmas 2020. Here is project milestone