dotfiles/nvim/lua/config/lsp.lua

local nvim_lsp = require("lspconfig")

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
local on_attach = function(bufnr)
    local function buf_set_keymap(...)
        vim.api.nvim_buf_set_keymap(bufnr, ...)
    end

    -- Mappings.
    local opts = {noremap = true, silent = true}

    -- See `:help vim.lsp.*` for documentation on any of the below functions
    buf_set_keymap("n", "gD", "<Cmd>lua vim.lsp.buf.declaration()<CR>", opts)
    buf_set_keymap("n", "gd", "<Cmd>lua vim.lsp.buf.definition()<CR>", opts)
    buf_set_keymap("n", "K", "<Cmd>lua vim.lsp.buf.hover()<CR>", opts)
    buf_set_keymap("n", "gi", "<cmd>lua vim.lsp.buf.implementation()<CR>", opts)
    buf_set_keymap("n", "gT", vim.lsp.buf.type_definition, opts)
    -- buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
    buf_set_keymap("n", "<space>wa",
                   "<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>", opts)
    buf_set_keymap("n", "<space>wr",
                   "<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>", opts)
    buf_set_keymap("n", "<space>wl",
                   "<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>",
                   opts)
    buf_set_keymap("n", "<space>D",
                   "<cmd>lua vim.lsp.buf.type_definition()<CR>", opts)
    buf_set_keymap("n", "<space>rn", "<cmd>lua vim.lsp.buf.rename()<CR>", opts)
    buf_set_keymap("n", "<space>ca", "<cmd>lua vim.lsp.buf.code_action()<CR>",
                   opts)
    buf_set_keymap("n", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
    buf_set_keymap("n", "<space>e", "<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>", opts)
    buf_set_keymap("n", "[d", "<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>", opts)

    buf_set_keymap("n", "]d", "<cmd>lua vim.lsp.diagnostic.goto_next()<CR>", opts)
    buf_set_keymap("n", "<space>q", "<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>", opts)
    buf_set_keymap("n", "<space>f", "<cmd>lua vim.lsp.buf.formatting()<CR>", opts)

end

-- Use a loop to conveniently call 'setup' on multiple servers and
-- map buffer local keybindings when the language server attaches
--local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require("cmp_nvim_lsp").default_capabilities()

local servers = {
    "gopls", "bashls", "jedi_language_server", "dockerls", "terraformls",
    "tsserver", "texlab", "yamlls", "jsonls", "clangd", "sourcekit"
}
for _, lsp in ipairs(servers) do
    nvim_lsp[lsp].setup {
        on_attach = on_attach,
        capabilities = capabilities,
        settings = {
            gopls = {analyses = {unusedparams = false}, staticcheck = true},
            json = {
                format = {enabled = false},
                schemas = {
                    {
                        description = "ESLint config",
                        fileMatch = {".eslintrc.json", ".eslintrc"},
                        url = "http://json.schemastore.org/eslintrc"
                    }, {
                        description = "Package config",
                        fileMatch = {"package.json"},
                        url = "https://json.schemastore.org/package"
                    }, {
                        description = "Packer config",
                        fileMatch = {"packer.json"},
                        url = "https://json.schemastore.org/packer"
                    }, {
                        description = "Renovate config",
                        fileMatch = {
                            "renovate.json", "renovate.json5",
                            ".github/renovate.json", ".github/renovate.json5",
                            ".renovaterc", ".renovaterc.json"
                        },
                        url = "https://docs.renovatebot.com/renovate-schema"
                    }, {
                        description = "OpenApi config",
                        fileMatch = {"*api*.json"},
                        url = "https://raw.githubusercontent.com/OAI/OpenAPI-Specification/main/schemas/v3.1/schema.json"
                    }
                }
            },
            redhat = {telemetry = {enabled = false}},
            texlab = {
                auxDirectory = ".",
                bibtexFormatter = "texlab",
                build = {
                    args = {
                        "--keep-intermediates", "--keep-logs", "--synctex", "%f"
                    },
                    executable = "tectonic",
                    forwardSearchAfter = false,
                    onSave = false
                },
                chktex = {onEdit = false, onOpenAndSave = false},
                diagnosticsDelay = 300,
                formatterLineLength = 80,
                forwardSearch = {args = {}},
                latexFormatter = "latexindent",
                latexindent = {modifyLineBreaks = false}
            },
            yaml = {
                schemaStore = {
                    enable = true,
                    url = "https://www.schemastore.org/api/json/catalog.json"
                },
                schemas = {
                    kubernetes = "/*.yaml",
                    ["http://json.schemastore.org/github-workflow"] = ".github/workflows/*.{yml,yaml}",
                    ["http://json.schemastore.org/github-action"] = ".github/action.{yml,yaml}",
                    ["http://json.schemastore.org/ansible-stable-2.9"] = "roles/tasks/*.{yml,yaml}",
                    ["http://json.schemastore.org/prettierrc"] = ".prettierrc.{yml,yaml}",
                    ["http://json.schemastore.org/kustomization"] = "kustomization.{yml,yaml}",
                    ["http://json.schemastore.org/ansible-playbook"] = "*play*.{yml,yaml}",
                    ["http://json.schemastore.org/chart"] = "Chart.{yml,yaml}",
                    ["https://json.schemastore.org/dependabot-v2"] = ".github/dependabot.{yml,yaml}",
                    ["https://json.schemastore.org/gitlab-ci"] = "*gitlab-ci*.{yml,yaml}",
                    ["https://raw.githubusercontent.com/OAI/OpenAPI-Specification/main/schemas/v3.1/schema.json"] = "*api*.{yml,yaml}",
                    ["https://raw.githubusercontent.com/compose-spec/compose-spec/master/schema/compose-spec.json"] = "docker-compose.{yml,yaml}",
                    ["https://raw.githubusercontent.com/argoproj/argo-workflows/master/api/jsonschema/schema.json"] = "*flow*.{yml,yaml}"
                },
                format = {enabled = false},
                validate = false, -- TODO: conflicts between Kubernetes resources and kustomization.yaml
                completion = true,
                hover = true
            }
        },
        flags = {debounce_text_changes = 150}
    }
    require"lsp_signature".setup({
        bind = true, -- This is mandatory, otherwise border config won't get registered.
        floating_window = true, -- show hint in a floating window, set to false for virtual text only mode
        doc_lines = 2, -- Set to 0 for not showing doc
        hint_prefix = "🐼 ",
        -- use_lspsaga = false,  -- set to true if you want to use lspsaga popup
        handler_opts = {
            border = "shadow" -- double, single, shadow, none
        }
    })
end

-- Test source-kit
--require'lspconfig'.sourcekit.setup{}


-- local sumneko_root_path = os.getenv("HOME") .. ".cache/lua-language-server"
-- local sumneko_binary = "/usr/bin/lua-language-server"
-- require"lspconfig".sumneko_lua.setup {
--     cmd = {sumneko_binary, "-E", sumneko_root_path .. "/main.lua"},
--     capabilities = capabilities,
--     on_attach = on_attach,
--     settings = {
--         Lua = {
--             runtime = {version = "LuaJIT", path = vim.split(package.path, ";")},
--             completion = {enable = true, callSnippet = "Both"},
--             diagnostics = {
--                 enable = true,
--                 globals = {"vim", "describe"},
--                 disable = {"lowercase-global"}
--             },
--             workspace = {
--                 library = {
--                     [vim.fn.expand("$VIMRUNTIME/lua")] = true,
--                     [vim.fn.expand("$VIMRUNTIME/lua/vim/lsp")] = true,
--                     [vim.fn.expand("/usr/share/awesome/lib")] = true
--                 },
--                 -- adjust these two values if your performance is not optimal
--                 maxPreload = 2000,
--                 preloadFileSize = 1000
--             },
--             telemetry = {enable = false}
--         }
--     }
-- }


-- alternative to formatter but yamlfix is not working and I need this for respecting yamllint config
-- but yamlfix is messing up ansible files ... 😠
-- require('lspconfig')['efm'].setup{
--   filetypes = { 'json', 'yaml','lua' },
--   init_options = {documentFormatting = true, codeAction = false},
--   settings = {
--     rootMarkers = {".git/"},
--     languages = {
--       lua = {
--         {formatCommand = "lua-format -i", formatStdin = true}
--       },
--       yaml = {
--         {formatCommand = "yamlfix -", formatStdin = true}
--       },
--       json = {
--         {formatCommand = "prettier", formatStdin = true}
--       }
--     }
--   }
-- }