return {
    -- Mason.
    {
        "williamboman/mason.nvim",
        config = function()
            require("mason").setup()
        end,
    },
    -- Mason LSP Config.
    {
        "williamboman/mason-lspconfig.nvim",
        config = function()
            require("lspconfig").gdscript.setup({})
            require("mason-lspconfig").setup({
                ensure_installed = {
                    "clangd",
                    "neocmake",
                    "jdtls",
                    "ts_ls",
                    "lua_ls",
                    "pyright",
                    "omnisharp",
                    "html",
                    "cssls",
                    "glsl_analyzer",
                    "biome",
                    "somesass_ls",
                    "ocamllsp",
                },
            })
        end,
    },
    -- NeoVim LSP Config.
    {
        "neovim/nvim-lspconfig",
        config = function()
            -- Autocomplete and snippets stuff.
            local capabilities = require("cmp_nvim_lsp").default_capabilities()
            -- Setting up languages.
            local lspconfig = require("lspconfig")
            lspconfig.clangd.setup({ capabilities = capabilities })
            lspconfig.jdtls.setup({ capabilities = capabilities })
            lspconfig.lua_ls.setup({ capabilities = capabilities })
            lspconfig.ts_ls.setup({ capabilities = capabilities })
            lspconfig.pyright.setup({ capabilities = capabilities })
            lspconfig.html.setup({
                capabilities = capabilities,
                filetypes = { "html", "jinja.html" },
            })
            lspconfig.cssls.setup({ capabilities = capabilities })
            lspconfig.glsl_analyzer.setup({ capabilities = capabilities })
            lspconfig.somesass_ls.setup({ capabilities = capabilities })

            -- Specific stuff for CMake.
            local cmakeCapabilities = vim.lsp.protocol.make_client_capabilities()
            cmakeCapabilities.textDocument.completion.completionItem.snippetSupport = true
            lspconfig.neocmake.setup({ capabilities = cmakeCapabilities })

            -- Specific stuff to C# omnisharp
            lspconfig.omnisharp.setup({
                capabilities = capabilities,
                cmd = { "dotnet", vim.fn.stdpath("data") .. "/mason/packages/omnisharp/libexec/OmniSharp.dll" },
                enable_import_completion = true,
                organize_imports_on_format = true,
                enable_roslyn_analyzers = true,
                root_dir = function()
                    return vim.loop.cwd() -- Current Working Directory
                end,
                -- Settings stuff
                settings = {
                    FormattingOptions = {
                        EnableEditorConfigSupport = true,
                        OrganizeImports = true,
                    },
                    MsBuild = {
                        LoadProjectsOnDemand = false,
                    },
                    RoslynExtensionsOptions = {
                        EnableAnalyzersSupport = true,
                        EnableImportCompletion = true,
                        AnalyzeOpenDocumentsOnly = false,
                    },
                    Sdk = {
                        IncludePrereleases = true,
                    },
                },
            })
            -- Setting up keybinds.
            vim.keymap.set("n", "K", vim.lsp.buf.hover, {})
            vim.keymap.set("n", "gd", vim.lsp.buf.definition, {})
            vim.keymap.set({ "n", "v" }, "<leader>ca", vim.lsp.buf.code_action, {})
        end,
    },
}