1 files changed, 236 insertions, 0 deletions

diff --git a/.config/nvim/lua/plugins/lsp.lua b/.config/nvim/lua/plugins/lsp.lua
new file mode 100644
index 0000000..d03d9af
--- /dev/null
+++ b/.config/nvim/lua/plugins/lsp.lua
@@ -0,0 +1,236 @@
+return {
+    {
+        "neovim/nvim-lspconfig",
+        dependencies = {
+            "williamboman/mason.nvim",
+            "williamboman/mason-lspconfig.nvim",
+            "j-hui/fidget.nvim",
+            "folke/neodev.nvim",
+            "RRethy/vim-illuminate",
+            "hrsh7th/cmp-nvim-lsp",
+        },
+        config = function()
+            local map = require("helpers.keys").map
+
+            map('n', '<leader>e', vim.diagnostic.open_float, "lsp: open diagnostics float")
+            map('n', '[d', vim.diagnostic.goto_prev, "lsp: goto previous diagnostic")
+            map('n', ']d', vim.diagnostic.goto_next, "lsp: goto next diagnostic")
+
+            -- set up mason before anything else
+            require("mason").setup()
+            require("mason-lspconfig").setup({
+                ensure_installed = {
+                    "lua_ls",
+                    "pylsp",
+                },
+                automatic_installation = true,
+            })
+
+            -- quick access via keymap
+            require("helpers.keys").map("n", "<leader>M", "<cmd>Mason<cr>", "show mason")
+
+            -- neodev setup before lsp config
+            require("neodev").setup()
+
+            -- set up cool signs for diagnostics
+            local signs = { Error = " ", Warn = "", Hint = "", Info = "" }
+            for type, icon in pairs(signs) do
+                local hl = "DiagnosticSign" .. type
+                vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = "" })
+            end
+
+            -- Diagnostic config
+            local config = {
+                virtual_text = false,
+                signs = {
+                    active = signs,
+                },
+                update_in_insert = true,
+                underline = true,
+                severity_sort = true,
+                float = {
+                    focusable = true,
+                    style = "minimal",
+                    border = "rounded",
+                    source = "always",
+                    header = "",
+                    prefix = "",
+                },
+            }
+            vim.diagnostic.config(config)
+
+            -- this function gets run when an lsp connects to a particular buffer.
+            local on_attach = function(client, bufnr)
+                map = require("helpers.keys").lsp_map
+
+                map("<leader>lr", vim.lsp.buf.rename, bufnr, "lsp: rename symbol")
+                map("<leader>la", vim.lsp.buf.code_action, bufnr, "lsp: code action")
+                map("<leader>ld", vim.lsp.buf.type_definition, bufnr, "lsp: type definition")
+                map("<leader>ls", require("telescope.builtin").lsp_document_symbols, bufnr, "lsp: document symbols")
+
+                map("gd", vim.lsp.buf.definition, bufnr, "lsp: goto definition")
+                map("gD", vim.lsp.buf.declaration, bufnr, "lsp: goto declaration")
+                map("gr", require("telescope.builtin").lsp_references, bufnr, "lsp: goto references")
+                map("gI", vim.lsp.buf.implementation, bufnr, "lsp: goto implementation")
+                map("K", vim.lsp.buf.hover, bufnr, "lsp: hover documentation")
+                map("<c-k>", vim.lsp.buf.signature_help, bufnr, "lsp: signature help")
+
+                -- Create a command `:Format` local to the LSP buffer
+                vim.api.nvim_buf_create_user_command(bufnr, "Format", function(_)
+                    vim.lsp.buf.format()
+                end, { desc = "lsp: format current buffer" })
+
+                map("<leader>fm", "<cmd>Format<cr>", bufnr, "lsp: format current buffer")
+
+                -- Attach and configure vim-illuminate
+                -- apparently this is deprecated
+                -- https://github.com/RRethy/vim-illuminate/issues/111
+                require("illuminate").on_attach(client)
+            end
+
+            -- nvim-cmp supports additional completion capabilities, so broadcast that to servers
+            local capabilities = vim.lsp.protocol.make_client_capabilities()
+            capabilities = require("cmp_nvim_lsp").default_capabilities(capabilities)
+
+            -- lua
+            require("lspconfig")["lua_ls"].setup({
+                on_attach = on_attach,
+                capabilities = capabilities,
+                settings = {
+                    Lua = {
+                        completion = {
+                            callSnippet = "Replace",
+                        },
+                        diagnostics = {
+                            globals = { "vim" },
+                        },
+                        workspace = {
+                            library = {
+                                [vim.fn.expand("$VIMRUNTIME/lua")] = true,
+                                [vim.fn.stdpath("config") .. "/lua"] = true,
+                            },
+                        },
+                    },
+                },
+            })
+
+            -- python
+            require("lspconfig")["pylsp"].setup({
+                on_attach = on_attach,
+                capabilities = capabilities,
+                settings = {
+                    pylsp = {
+                        plugins = {
+                            flake8 = {
+                                enabled = true,
+                                maxLineLength = 88, -- black's line length
+                            },
+                            -- disable plugins overlapping with flake8
+                            pycodestyle = {
+                                enabled = false,
+                            },
+                            mccabe = {
+                                enabled = false,
+                            },
+                            pyflakes = {
+                                enabled = false,
+                            },
+                            -- use black as the formatter
+                            autopep8 = {
+                                enabled = false,
+                            },
+                        },
+                    },
+                },
+            })
+
+            -- efm
+            require("lspconfig")["efm"].setup({
+                on_attach = on_attach,
+                filetypes = { 'sh' },
+                capabilities = capabilities
+            })
+
+            -- ltex
+            require("lspconfig")["ltex"].setup({
+                capabilities = capabilities,
+                on_attach = function(client, bufnr)
+                    on_attach(client, bufnr)
+                    require("ltex_extra").setup {
+                        load_langs = { "en-GB" },
+                        init_check = true,
+                        log_level = "none",
+                    }
+                end,
+                settings = {
+                    ltex = {
+                        -- my settings here
+                    }
+                }
+            })
+
+            -- rust-tools
+            local rust_opts = {
+                tools = {
+                    runnables = {
+                        use_telescope = true,
+                    },
+                    inlay_hints = {
+                        auto = true,
+                        show_parameter_hints = true,
+                        parameter_hints_prefix = "↸ ",
+                        other_hints_prefix = "❱ ",
+                    },
+                },
+
+                -- all the opts to send to nvim-lspconfig
+                -- these override the defaults set by rust-tools.nvim
+                -- see https://github.com/neovim/nvim-lspconfig/blob/master/CONFIG.md#rust_analyzer
+                server = {
+                    on_attach = on_attach,
+                    settings = {
+                        -- to enable rust-analyzer settings visit:
+                        -- https://github.com/rust-analyzer/rust-analyzer/blob/master/docs/user/generated_config.adoc
+                        ["rust-analyzer"] = {
+                            -- enable clippy on save
+                            checkOnSave = {
+                                command = "clippy",
+                            },
+                        },
+                    },
+                },
+            }
+
+            require('rust-tools').setup(rust_opts)
+        end,
+    },
+    {
+        "barreiroleo/ltex-extra.nvim",
+        event = "LspAttach",
+    },
+    {
+        "j-hui/fidget.nvim",
+        tag = "legacy",
+        event = "LspAttach",
+        opts = {
+            text = {
+                spinner = "triangle",
+                commenced = "started", -- message shown when task starts
+                completed = "done",    -- message shown when task completes
+            },
+        },
+    },
+    {
+        "simrat39/rust-tools.nvim",
+        event = "LspAttach",
+    },
+    -- {
+    --     "RRethy/vim-illuminate",
+    --     opts = {
+    --         filetypes_denylist = {
+    --             'NvimTree',
+    --             'fugitive',
+    --         },
+    --     },
+    -- },
+}