dotfiles/nvim/lua/lsp.lua

vim.g.coq_settings = {
	auto_start = 'shut-up',
    keymap = {
        eval_snips = "<Leader>se",
    },
    clients = {
        buffers = {
            enabled = true,
            weight_adjust = -2.0,
        },
        tree_sitter = {
            enabled = true,
            weight_adjust = -1.5,
        },
        lsp = {
            enabled = true,
            weight_adjust = 1.5,
        },
        snippets = {
            enabled = true,
            weight_adjust = 2.0,
        }
    }
}

local coq = require('coq')

require('coq_3p') {
    { src  = 'vimtex', short_name = 'TEX'},
    { src  = 'nvimlua', short_name = 'NLUA', conf_only = true},
    { src  = 'bc', short_name = 'CALC', precision = 8},
}


local lspstatus = require('lsp-status')
lspstatus.register_progress()

local function find_repo_root(names)
    local util = require("lspconfig.util")
    local config = names.configfiles
    for _, i in ipairs(config) do
        local gitroot = util.root_pattern('.git')(i)
        if gitroot then
            for _, file in ipairs(config) do
                if util.path.is_file(util.path.join(gitroot, file)) then
                    return gitroot
                end
            end
        end
    end
end

local lsp_confs = {
	sumneko_lua = {
		settings = {
			Lua = {
				-- Settings for working with nvim (copied from https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#sumneko_lua)
				runtime = {
					version = 'LuaJIT',
					path = runtime_path,
				},
				diagnostics = {
					globals = {'vim'},
				},
				workspace = {
					library = vim.api.nvim_get_runtime_file("", true),
				},
			},
		},
	},
	rust_analyzer = {
		cmd_env = {
			CARGO_TARGET_DIR = "/tmp/rust-analyzer"
		},
		settings = {
			["rust-analyzer"] = {
				checkOnSave = {
					command = "clippy",
					allTargets = false,
				},
                cargo = {
                    features = "all",
                }

			},
		},
	},
	ccls = {},
    jedi_language_server = {
        filetypes = { "python", "sage.python" },
    },
	gopls = {},
    dartls = {},
    tsserver = {
        root_dir = find_repo_root({
            configfiles = { "tsconfig.json", "jsconfig.json", "package.json" }
        }),
    },
    eslint = {
        root_dir = find_repo_root({
            configfiles = { ".eslintrc", ".eslintrc.js", "package.json" }
        }),
        on_new_config = function (config, new_root_dir)
                    local default_config = require('lspconfig.server_configurations.eslint').default_config
                    default_config.on_new_config(config, new_root_dir)

                    local util = require('lspconfig.util')
                    local pnp_cjs = util.path.join(new_root_dir, '.pnp.cjs')
                    local pnp_js = util.path.join(new_root_dir, '.pnp.js')
                    if util.path.exists(pnp_cjs) or util.path.exists(pnp_js) then
                        config.cmd = { 'yarn', 'exec', unpack(default_config.cmd) }
                    end
                        end
    },
    svelte = {},
    svls = {},

}

local lsp_special_setup = {
}

local lspconfig = require('lspconfig')


for server, conf in pairs(lsp_confs) do
	local source_on_attach = conf.on_attach
	if source_on_attach == nil then
		conf.on_attach = on_attach
	else
		conf.on_attach = function(client, bufnr)
			on_attach(client, bufnr)
			source_on_attach(client, bufnr)
		end
	end

	conf.capabilities = vim.tbl_deep_extend(
		"keep",
		conf.capabilities or {},
		lspstatus.capabilities
	)

	local final_config = coq.lsp_ensure_capabilities(conf)

	local special_setup = lsp_special_setup[server]
	if special_setup then
		special_setup(final_config)
	else
		lspconfig[server].setup(final_config)
	end
end

local null_ls = require('null-ls')
null_ls.setup({
	sources = {
		null_ls.builtins.diagnostics.chktex,
		null_ls.builtins.diagnostics.cppcheck,
		null_ls.builtins.diagnostics.shellcheck,

		null_ls.builtins.code_actions.gitsigns,
	},
})

vim.diagnostic.config({
	severity_sort = true,
	update_in_insert = true,
	float = {
		source = true,
	},
})

do -- signs
	local signs = {
		{'DiagnosticSignError', text='×', texthl='DiagnosticSignError'},
		{'DiagnosticSignWarn', text='>', texthl='DiagnosticSignWarn'},
		{'DiagnosticSignInfo', text='I', texthl='DiagnosticSignInfo'},
		{'DiagnosticSignHint', text='H', texthl='DiagnosticSignHint'},
	}
	for _, sign in pairs(signs) do
		local name = sign[1]
		local opts = sign
		opts[1] = nil
		vim.fn.sign_define(name, opts)
	end
end

local map = vim.api.nvim_set_keymap
map(
	'n',
	'K',
	[[luaeval('next(vim.lsp.buf_get_clients()) == nil') ? 'K' : '<Cmd>lua vim.lsp.buf.hover()<CR>']],
	{noremap = true, expr = true}
)
map(
	'n',
	'<C-]>',
	[[luaeval('next(vim.lsp.buf_get_clients()) == nil') ? '<C-]>' : '<Cmd>lua vim.lsp.buf.definition()<CR>']],
	{noremap = true, expr = true}
)

vim.cmd [[
	augroup lspconfig
		au!
		" diagnostic on hover
		au CursorHold * lua vim.diagnostic.open_float({focus = false})
	augroup END
]]