RPM spec feedback directly in your editor

[Andreas Schneider]

Hi,

I'm a big fan of neovim (emacs users jump to 'emacs:' ;-). neovim has support

for the Language Server Protocol and there is a nice plugin called 'null-ls' 
[1] which allows you to hook linters and formatters into neovim.

I've added support for rpmspec in 'null-ls' so you can get feedback directly 
while editing a spec file. See the attached screenshot.

How to configure it:

```
local ok, null_ls = pcall(require, 'null-ls')
if not ok then
    return
end
local sources = {}

if vim.fn.executable('rpmspec') == 1 then
    table.insert(sources, null_ls.builtins.diagnostics.rpmspec)
end

null_ls.setup({
    debug = false,
    sources = sources,
})
```

What is currently missing in rpmspec is support to parse the input form stdin 
instead of a file [2]. But there is already a PR to support it [3].

Best regards


	Andreas


[1] https://github.com/jose-elias-alvarez/null-ls.nvim/
[2] https://github.com/rpm-software-management/rpm/issues/1926
[3] https://github.com/rpm-software-management/rpm/pull/1928

emacs:
There is a general purpose LSP called diagnostic-language-server [4]
you can use to achieve the same with emacs-lsp.

`dnf install nodejs-diagnostic-languageserver`

[4] https://github.com/iamcco/diagnostic-languageserver