diff --git a/lua/r/browser.lua b/lua/r/browser.lua
index ff8417a0..183c2e1c 100644
--- a/lua/r/browser.lua
+++ b/lua/r/browser.lua
@@ -20,8 +20,9 @@ with the R backend and update the Object Browser interface accordingly.
 ]]
 
 local config = require("r.config").get_config()
-local warn = require("r").warn
+local warn = require("r.log").warn
 local job = require("r.job")
+local hooks = require("r.hooks")
 local send_to_nvimcom = require("r.run").send_to_nvimcom
 
 -- Determine if the locale uses UTF-8 encoding
@@ -332,10 +333,7 @@ function M.start(_)
     start_OB()
     state.is_running = false
 
-    -- Execute any user-defined hooks after opening the Object Browser
-    if config.hook.after_ob_open then
-        vim.schedule(function() config.hook.after_ob_open() end)
-    end
+    hooks.run(config, "after_ob_open")
 end
 
 --- Return the active pane of the Object Browser
diff --git a/lua/r/commands.lua b/lua/r/commands.lua
new file mode 100644
index 00000000..9e03c8cb
--- /dev/null
+++ b/lua/r/commands.lua
@@ -0,0 +1,82 @@
+local config = require("r.config").get_config()
+
+local M = {}
+
+local function show_config(tbl)
+    local opt = tbl.args
+    local out = {}
+    if opt and opt:len() > 0 then
+        opt = opt:gsub(" .*", "")
+        table.insert(out, { vim.inspect(config[opt]) })
+    else
+        table.insert(out, { vim.inspect(config) })
+    end
+    vim.schedule(function() vim.api.nvim_echo(out, false, {}) end)
+end
+
+local config_keys = {}
+for k, _ in pairs(config) do
+    table.insert(config_keys, tostring(k))
+end
+
+function M.create_user_commands()
+    vim.api.nvim_create_user_command(
+        "RStop",
+        function(_) require("r.run").signal_to_R("SIGINT") end,
+        {}
+    )
+    vim.api.nvim_create_user_command(
+        "RKill",
+        function(_) require("r.run").signal_to_R("SIGKILL") end,
+        {}
+    )
+    vim.api.nvim_create_user_command("RBuildTags", require("r.edit").build_tags, {})
+    vim.api.nvim_create_user_command("RDebugInfo", require("r.edit").show_debug_info, {})
+    vim.api.nvim_create_user_command("RMapsDesc", require("r.maps").show_map_desc, {})
+
+    vim.api.nvim_create_user_command(
+        "RSend",
+        function(tbl) require("r.send").cmd(tbl.args) end,
+        { nargs = 1 }
+    )
+
+    vim.api.nvim_create_user_command(
+        "RFormat",
+        require("r.run").formart_code,
+        { range = "%" }
+    )
+
+    vim.api.nvim_create_user_command(
+        "RInsert",
+        function(tbl) require("r.run").insert(tbl.args, "here") end,
+        { nargs = 1 }
+    )
+
+    vim.api.nvim_create_user_command(
+        "RSourceDir",
+        function(tbl) require("r.run").source_dir(tbl.args) end,
+        { nargs = 1, complete = "dir" }
+    )
+
+    vim.api.nvim_create_user_command(
+        "RHelp",
+        function(tbl) require("r.doc").ask_R_help(tbl.args) end,
+        {
+            nargs = "?",
+            complete = require("r.server").list_objs,
+        }
+    )
+
+    vim.api.nvim_create_user_command("RConfigShow", show_config, {
+        nargs = "?",
+        complete = function() return config_keys end,
+    })
+
+    vim.api.nvim_create_user_command(
+        "Roxygenize",
+        function() require("r.roxygen").insert_roxygen(vim.api.nvim_get_current_buf()) end,
+        {}
+    )
+end
+
+return M
diff --git a/lua/r/config.lua b/lua/r/config.lua
index a8b14022..8704001e 100644
--- a/lua/r/config.lua
+++ b/lua/r/config.lua
@@ -1,5 +1,7 @@
-local warn = require("r").warn
-local uv = vim.loop
+local warn = require("r.log").warn
+local utils = require("r.utils")
+local uv = vim.uv
+local hooks = require("r.hooks")
 
 -- stylua: ignore start
 
@@ -111,22 +113,10 @@ local config = {
 
 -- stylua: ignore end
 
-local config_keys
-
 local user_opts = {}
 local did_real_setup = false
-
-local show_config = function(tbl)
-    local opt = tbl.args
-    local out = {}
-    if opt and opt:len() > 0 then
-        opt = opt:gsub(" .*", "")
-        table.insert(out, { vim.inspect(config[opt]) })
-    else
-        table.insert(out, { vim.inspect(config) })
-    end
-    vim.schedule(function() vim.api.nvim_echo(out, false, {}) end)
-end
+local unix = require("r.platform.unix")
+local windows = require("r.platform.windows")
 
 local set_editing_mode = function()
     if config.editing_mode ~= "" then return end
@@ -170,8 +160,6 @@ end
 --- being applied. If a check fails, a warning is show, and the default option
 --- is used instead.
 local apply_user_opts = function()
-    local utils = require("r.utils")
-
     -- Ensure that some config options will be in lower case
     for _, v in pairs({
         "auto_start",
@@ -295,8 +283,6 @@ local apply_user_opts = function()
 end
 
 local do_common_global = function()
-    local utils = require("r.utils")
-
     config.uname = uv.os_uname().sysname
     config.is_windows = config.uname:find("Windows", 1, true) ~= nil
     config.is_darwin = config.uname == "Darwin"
@@ -586,261 +572,11 @@ local do_common_global = function()
     end
 end
 
-local resolve_fullpaths = function(tbl)
-    for i, v in ipairs(tbl) do
-        tbl[i] = uv.fs_realpath(v)
-    end
-end
-
-local windows_config = function()
-    local utils = require("r.utils")
-    local wtime = uv.hrtime()
-    local isi386 = false
-
-    if config.R_path ~= "" then
-        local rpath = vim.split(config.R_path, ";")
-        resolve_fullpaths(rpath)
-        vim.fn.reverse(rpath)
-        for _, dir in ipairs(rpath) do
-            if vim.fn.isdirectory(dir) then
-                vim.env.PATH = dir .. ";" .. vim.env.PATH
-            else
-                warn(
-                    '"'
-                        .. dir
-                        .. '" is not a directory. Fix the value of R_path in your config.'
-                )
-            end
-        end
-    else
-        if vim.env.RTOOLS40_HOME then
-            if vim.fn.isdirectory(vim.env.RTOOLS40_HOME .. "\\mingw64\\bin\\") then
-                vim.env.PATH = vim.env.RTOOLS40_HOME .. "\\mingw64\\bin;" .. vim.env.PATH
-            elseif vim.fn.isdirectory(vim.env.RTOOLS40_HOME .. "\\usr\\bin") then
-                vim.env.PATH = vim.env.RTOOLS40_HOME .. "\\usr\\bin;" .. vim.env.PATH
-            end
-        else
-            if vim.fn.isdirectory("C:\\rtools40\\mingw64\\bin") then
-                vim.env.PATH = "C:\\rtools40\\mingw64\\bin;" .. vim.env.PATH
-            elseif vim.fn.isdirectory("C:\\rtools40\\usr\\bin") then
-                vim.env.PATH = "C:\\rtools40\\usr\\bin;" .. vim.env.PATH
-            end
-        end
-
-        local get_rip = function(run_cmd)
-            local resp = utils.system(run_cmd, { text = true }):wait()
-            local rout = vim.split(resp.stdout, "\n")
-            local rip = {}
-            for _, v in pairs(rout) do
-                if v:find("InstallPath.*REG_SZ") then table.insert(rip, v) end
-            end
-            return rip
-        end
-
-        -- Check both HKCU and HKLM. See #223
-        local reg_roots = { "HKCU", "HKLM" }
-        local rip = {}
-        for i = 1, #reg_roots do
-            if #rip == 0 then
-                local run_cmd =
-                    { "reg.exe", "QUERY", reg_roots[i] .. "\\SOFTWARE\\R-core\\R", "/s" }
-                rip = get_rip(run_cmd)
-
-                if #rip == 0 then
-                    -- Normally, 32 bit applications access only 32 bit registry and...
-                    -- We have to try again if the user has installed R only in the other architecture.
-                    if vim.fn.has("win64") then
-                        table.insert(run_cmd, "/reg:64")
-                    else
-                        table.insert(run_cmd, "/reg:32")
-                    end
-                    rip = get_rip(run_cmd)
-
-                    if #rip == 0 and i == #reg_roots then
-                        warn(
-                            "Could not find R path in Windows Registry. "
-                                .. "If you have already installed R, please, set the value of 'R_path'."
-                        )
-                        wtime = (uv.hrtime() - wtime) / 1000000000
-                        require("r.edit").add_to_debug_info(
-                            "windows setup",
-                            wtime,
-                            "Time"
-                        )
-                        return
-                    end
-                end
-            end
-        end
-
-        local rinstallpath = nil
-        rinstallpath = rip[1]
-        rinstallpath = rinstallpath:gsub(".*InstallPath.*REG_SZ%s*", "")
-        rinstallpath = rinstallpath:gsub("\n", "")
-        rinstallpath = rinstallpath:gsub("%s*$", "")
-        local hasR32 = vim.fn.isdirectory(rinstallpath .. "\\bin\\i386")
-        local hasR64 = vim.fn.isdirectory(rinstallpath .. "\\bin\\x64")
-        if hasR32 == 1 and hasR64 == 0 then isi386 = true end
-        if hasR64 == 1 and hasR32 == 0 then isi386 = false end
-        if hasR32 == 1 and isi386 then
-            vim.env.PATH = rinstallpath .. "\\bin\\i386;" .. vim.env.PATH
-        elseif hasR64 == 1 and not isi386 then
-            vim.env.PATH = rinstallpath .. "\\bin\\x64;" .. vim.env.PATH
-        else
-            vim.env.PATH = rinstallpath .. "\\bin;" .. vim.env.PATH
-        end
-    end
-
-    if not config.R_args then
-        if type(config.external_term) == "boolean" and config.external_term == false then
-            config.R_args = { "--no-save" }
-        else
-            config.R_args = { "--sdi", "--no-save" }
-        end
-    end
-    wtime = (uv.hrtime() - wtime) / 1000000000
-    require("r.edit").add_to_debug_info("windows setup", wtime, "Time")
-end
-
-local tmux_config = function()
-    local ttime = uv.hrtime()
-    -- Check whether Tmux is OK
-    if vim.fn.executable("tmux") == 0 then
-        config.external_term = false
-        warn("tmux executable not found")
-        return
-    end
-
-    local tmuxversion
-    if config.uname:find("OpenBSD") then
-        -- Tmux does not have -V option on OpenBSD: https://github.com/jcfaria/Vim-R-plugin/issues/200
-        tmuxversion = "0.0"
-    else
-        tmuxversion = vim.fn.system("tmux -V")
-        if tmuxversion then
-            tmuxversion = tmuxversion:gsub(".* ([0-9]%.[0-9]).*", "%1")
-            if #tmuxversion ~= 3 then tmuxversion = "1.0" end
-            if tmuxversion < "3.0" then warn("R.nvim requires Tmux >= 3.0") end
-        end
-    end
-    ttime = (uv.hrtime() - ttime) / 1000000000
-    require("r.edit").add_to_debug_info("tmux setup", ttime, "Time")
-end
-
-local unix_config = function()
-    local utime = uv.hrtime()
-    if config.R_path ~= "" then
-        local rpath = vim.split(config.R_path, ":")
-        resolve_fullpaths(rpath)
-
-        -- Add the current directory to the beginning of the path
-        table.insert(rpath, 1, "")
-
-        -- loop over rpath in reverse.
-        for i = #rpath, 1, -1 do
-            local dir = rpath[i]
-            local is_dir = uv.fs_stat(dir)
-            -- Each element in rpath must exist and be a directory
-            if is_dir and is_dir.type == "directory" then
-                vim.env.PATH = dir .. ":" .. vim.env.PATH
-            else
-                warn(
-                    '"'
-                        .. dir
-                        .. '" is not a directory. Fix the value of R_path in your config.'
-                )
-            end
-        end
-    end
-
-    if vim.fn.executable(config.R_app) ~= 1 then
-        warn(
-            '"'
-                .. config.R_app
-                .. '" not found. Fix the value of either R_path or R_app in your config.'
-        )
-    end
-
-    if
-        (type(config.external_term) == "boolean" and config.external_term)
-        or type(config.external_term) == "string"
-    then
-        tmux_config() -- Consider removing this line if it's not necessary
-    end
-    utime = (uv.hrtime() - utime) / 1000000000
-    require("r.edit").add_to_debug_info("unix setup", utime, "Time")
-end
-
-local create_user_commands = function()
-    vim.api.nvim_create_user_command(
-        "RStop",
-        function(_) require("r.run").signal_to_R("SIGINT") end,
-        {}
-    )
-    vim.api.nvim_create_user_command(
-        "RKill",
-        function(_) require("r.run").signal_to_R("SIGKILL") end,
-        {}
-    )
-    vim.api.nvim_create_user_command("RBuildTags", require("r.edit").build_tags, {})
-    vim.api.nvim_create_user_command("RDebugInfo", require("r.edit").show_debug_info, {})
-    vim.api.nvim_create_user_command("RMapsDesc", require("r.maps").show_map_desc, {})
-
-    vim.api.nvim_create_user_command(
-        "RSend",
-        function(tbl) require("r.send").cmd(tbl.args) end,
-        { nargs = 1 }
-    )
-
-    vim.api.nvim_create_user_command(
-        "RFormat",
-        require("r.run").formart_code,
-        { range = "%" }
-    )
-
-    vim.api.nvim_create_user_command(
-        "RInsert",
-        function(tbl) require("r.run").insert(tbl.args, "here") end,
-        { nargs = 1 }
-    )
-
-    vim.api.nvim_create_user_command(
-        "RSourceDir",
-        function(tbl) require("r.run").source_dir(tbl.args) end,
-        { nargs = 1, complete = "dir" }
-    )
-
-    vim.api.nvim_create_user_command(
-        "RHelp",
-        function(tbl) require("r.doc").ask_R_help(tbl.args) end,
-        {
-            nargs = "?",
-            complete = require("r.server").list_objs,
-        }
-    )
-
-    vim.api.nvim_create_user_command("RConfigShow", show_config, {
-        nargs = "?",
-        complete = function() return config_keys end,
-    })
-
-    vim.api.nvim_create_user_command(
-        "Roxygenize",
-        function() require("r.roxygen").insert_roxygen(vim.api.nvim_get_current_buf()) end,
-        {}
-    )
-end
-
 local global_setup = function()
     local gtime = uv.hrtime()
 
     if vim.g.R_Nvim_status == 0 then vim.g.R_Nvim_status = 1 end
 
-    config_keys = {}
-    for k, _ in pairs(config) do
-        table.insert(config_keys, tostring(k))
-    end
-
     set_pdf_viewer()
     apply_user_opts()
 
@@ -861,9 +597,9 @@ local global_setup = function()
     -- See https://github.com/jalvesaq/Nvim-R/issues/625
     do_common_global()
     if config.is_windows then
-        windows_config()
+        windows.configure(config)
     else
-        unix_config()
+        unix.configure(config)
     end
 
     -- Override default config values with user options for the second time.
@@ -871,13 +607,11 @@ local global_setup = function()
         config[k] = v
     end
 
-    create_user_commands()
+    require("r.commands").create_user_commands()
     vim.fn.timer_start(1, require("r.config").check_health)
     vim.schedule(function() require("r.server").check_nvimcom_version() end)
 
-    if config.hook.after_config then
-        vim.schedule(function() config.hook.after_config() end)
-    end
+    hooks.run(config, "after_config")
 
     gtime = (uv.hrtime() - gtime) / 1000000000
     require("r.edit").add_to_debug_info("global setup", gtime, "Time")
@@ -910,9 +644,7 @@ M.real_setup = function()
         did_real_setup = true
         global_setup()
     end
-    if config.hook.on_filetype then
-        vim.schedule(function() config.hook.on_filetype() end)
-    end
+    hooks.run(config, "on_filetype")
     require("r.rproj").apply_settings(config)
 
     if config.register_treesitter then
@@ -935,12 +667,20 @@ M.check_health = function()
         warn("Please, uninstall Nvim-R before using R.nvim.")
     end
 
-    if vim.fn.executable(config.R_app) == 0 then
-        warn("R_app executable not found: '" .. config.R_app .. "'")
-    end
+    -- Check R_app asynchronously
+    utils.check_executable(config.R_app, function(exists)
+        if not exists then
+            warn("R_app executable not found: '" .. config.R_app .. "'")
+        end
+    end)
 
-    if not config.R_cmd == config.R_app and vim.fn.executable(config.R_cmd) == 0 then
-        warn("R_cmd executable not found: '" .. config.R_cmd .. "'")
+    -- Check R_cmd asynchronously if it's different from R_app
+    if config.R_cmd ~= config.R_app then
+        utils.check_executable(config.R_cmd, function(exists)
+            if not exists then
+                warn("R_cmd executable not found: '" .. config.R_cmd .. "'")
+            end
+        end)
     end
 
     if vim.fn.has("nvim-0.9.5") ~= 1 then warn("R.nvim requires Neovim >= 0.9.5") end
diff --git a/lua/r/doc.lua b/lua/r/doc.lua
index 382ae225..4ee6788c 100644
--- a/lua/r/doc.lua
+++ b/lua/r/doc.lua
@@ -1,6 +1,6 @@
 local config = require("r.config").get_config()
 local send_to_nvimcom = require("r.run").send_to_nvimcom
-local warn = require("r").warn
+local warn = require("r.log").warn
 local utils = require("r.utils")
 local cursor = require("r.cursor")
 local job = require("r.job")
diff --git a/lua/r/edit.lua b/lua/r/edit.lua
index f7aa8cef..52dfb6e6 100644
--- a/lua/r/edit.lua
+++ b/lua/r/edit.lua
@@ -1,6 +1,6 @@
 local config = require("r.config").get_config()
 local get_lang = require("r.utils").get_lang
-local warn = require("r").warn
+local warn = require("r.log").warn
 local del_list = {}
 local rscript_buf = nil
 local debug_info = { Time = {} }
@@ -235,7 +235,7 @@ M.obj = function(fnm)
         vim.api.nvim_set_option_value("bufhidden", "wipe", { scope = "local" })
         vim.cmd("stopinsert")
         vim.api.nvim_create_autocmd("BufUnload", {
-            command = "lua vim.loop.fs_unlink('" .. fnm .. "_wait')",
+            command = "lua vim.uv.fs_unlink('" .. fnm .. "_wait')",
             pattern = "<buffer>",
         })
     end)
diff --git a/lua/r/external_term.lua b/lua/r/external_term.lua
index 4f3f28b1..3359c8f0 100644
--- a/lua/r/external_term.lua
+++ b/lua/r/external_term.lua
@@ -1,7 +1,7 @@
 local config = require("r.config").get_config()
 local utils = require("r.utils")
-local uv = vim.loop
-local warn = require("r").warn
+local uv=vim.uv
+local warn = require("r.log").warn
 
 local term_name = nil
 local term_cmd = nil
diff --git a/lua/r/format/brackets.lua b/lua/r/format/brackets.lua
index 16f9853d..07b8b7d4 100644
--- a/lua/r/format/brackets.lua
+++ b/lua/r/format/brackets.lua
@@ -4,7 +4,7 @@
 -- Second case, when using the [ operator: vec[1] -> vec[[1]]
 -- It supports multiple subsetting and nested expressions: df$var[1] -> df[["var"]][[1]]
 
-local warn = require("r").warn
+local warn = require("r.log").warn
 local M = {}
 
 local parsers = require("nvim-treesitter.parsers")
diff --git a/lua/r/format/numbers.lua b/lua/r/format/numbers.lua
index a12d9710..97677f96 100644
--- a/lua/r/format/numbers.lua
+++ b/lua/r/format/numbers.lua
@@ -1,6 +1,6 @@
 local config = require("r.config").get_config()
 
-local warn = require("r").warn
+local warn = require("r.log").warn
 local M = {}
 
 -- We check if treesitter is available in the check_parsers() function of the
diff --git a/lua/r/hooks.lua b/lua/r/hooks.lua
new file mode 100644
index 00000000..5c3ed862
--- /dev/null
+++ b/lua/r/hooks.lua
@@ -0,0 +1,35 @@
+--[[
+This module implements functions that manage the execution of
+user-defined hooks. These are defined in the `config.hooks` table in
+the user configuration:
+
+defaults = {
+    ...,
+    hook = {
+        on_filetype = function() end,
+        after_config = function() end,
+        after_R_start = function() end,
+        after_ob_open = function() end,
+    },
+    ...,
+}
+
+User documentation for user-defined hooks: section 6.29
+]]
+
+local M = {}
+
+--- Run the specified user-defined hook
+---
+--- Currently valid `hook_name` values are 'on_filetype',
+--- 'after_config', 'after_R_start', 'after_ob_open'
+---
+---@param config table
+---@param hook_name string
+function M.run(config, hook_name)
+    if config.hook and config.hook[hook_name] then -- Is config.hook check necessary?
+        vim.schedule(function() config.hook[hook_name]() end)
+    end
+end
+
+return M
diff --git a/lua/r/init.lua b/lua/r/init.lua
index 02b51c9c..eeda2054 100644
--- a/lua/r/init.lua
+++ b/lua/r/init.lua
@@ -1,27 +1,5 @@
 local M = {}
 
---- Call vim.notify() with a warning message
----@param msg string
-M.warn = function(msg)
-    vim.schedule(
-        function() vim.notify(msg, vim.log.levels.WARN, { title = "R.nvim" }) end
-    )
-end
-
---- Call vim.notify() with to inform a message
----@param msg string
-M.inform = function(msg)
-    vim.schedule(
-        function()
-            vim.notify(
-                msg,
-                vim.log.levels.INFO,
-                { title = "R.nvim", hide_from_history = true }
-            )
-        end
-    )
-end
-
 --- Quick setup: simply store user options
 ---@param opts table | nil
 M.setup = function(opts)
diff --git a/lua/r/job.lua b/lua/r/job.lua
index 2a94fb5b..c2efa967 100644
--- a/lua/r/job.lua
+++ b/lua/r/job.lua
@@ -3,7 +3,7 @@
 
 local M = {}
 local jobs = {}
-local warn = require("r").warn
+local warn = require("r.log").warn
 
 -- Structure to keep track of incomplete input data.
 local incomplete_input = { size = 0, received = 0, str = "" }
diff --git a/lua/r/log.lua b/lua/r/log.lua
new file mode 100644
index 00000000..6ca49932
--- /dev/null
+++ b/lua/r/log.lua
@@ -0,0 +1,21 @@
+--- Helper function to call vim.notify() with scheduled execution
+---@param msg string
+---@param level number
+---@param opts table
+local function notify(msg, level, opts)
+    vim.schedule(function() vim.notify(msg, level, opts) end)
+end
+
+local M = {}
+
+--- Call vim.notify() with a warning message
+---@param msg string
+M.warn = function(msg) notify(msg, vim.log.levels.WARN, { title = "R.nvim" }) end
+
+--- Call vim.notify() to inform a message
+---@param msg string
+M.inform = function(msg)
+    notify(msg, vim.log.levels.INFO, { title = "R.nvim", hide_from_history = true })
+end
+
+return M
diff --git a/lua/r/maps.lua b/lua/r/maps.lua
index bbb297f7..230d121e 100644
--- a/lua/r/maps.lua
+++ b/lua/r/maps.lua
@@ -1,5 +1,5 @@
 local config = require("r.config").get_config()
-local warn = require("r").warn
+local warn = require("r.log").warn
 
 -- stylua: ignore start
 
diff --git a/lua/r/osx.lua b/lua/r/osx.lua
index e7853031..fc535557 100644
--- a/lua/r/osx.lua
+++ b/lua/r/osx.lua
@@ -1,5 +1,5 @@
 local config = require("r.config").get_config()
-local warn = require("r").warn
+local warn = require("r.log").warn
 local r64app = nil
 
 local M = {}
diff --git a/lua/r/packages.lua b/lua/r/packages.lua
index 8e477c05..680c6eaf 100644
--- a/lua/r/packages.lua
+++ b/lua/r/packages.lua
@@ -1,8 +1,8 @@
-local warn = require("r").warn
+local warn = require("r.log").warn
 
 local M = {}
 local S = require("r.send")
-local inform = require("r").inform
+local inform = require("r.log").inform
 
 --- Removes duplicate entries from a table of packages.
 --- Each package is represented by a table with a 'message' field.
diff --git a/lua/r/pdf/generic.lua b/lua/r/pdf/generic.lua
index 058b72dc..49d92899 100644
--- a/lua/r/pdf/generic.lua
+++ b/lua/r/pdf/generic.lua
@@ -1,4 +1,4 @@
-local warn = require("r").warn
+local warn = require("r.log").warn
 local config = require("r.config").get_config()
 local job = require("r.job")
 
diff --git a/lua/r/pdf/init.lua b/lua/r/pdf/init.lua
index 3f120995..671d4b3b 100644
--- a/lua/r/pdf/init.lua
+++ b/lua/r/pdf/init.lua
@@ -1,8 +1,8 @@
 local config = require("r.config").get_config()
 local utils = require("r.utils")
-local warn = require("r").warn
+local warn = require("r.log").warn
 local job = require("r.job")
-local uv = vim.loop
+local uv=vim.uv
 
 local check_installed = function()
     if vim.fn.executable(config.pdfviewer) == 0 then
diff --git a/lua/r/pdf/zathura.lua b/lua/r/pdf/zathura.lua
index 8afb6926..bcdaf133 100644
--- a/lua/r/pdf/zathura.lua
+++ b/lua/r/pdf/zathura.lua
@@ -1,4 +1,4 @@
-local warn = require("r").warn
+local warn = require("r.log").warn
 local utils = require("r.utils")
 local job = require("r.job")
 
diff --git a/lua/r/platform/tmux.lua b/lua/r/platform/tmux.lua
new file mode 100644
index 00000000..c4e2fe8e
--- /dev/null
+++ b/lua/r/platform/tmux.lua
@@ -0,0 +1,30 @@
+local M = {}
+local uv = vim.uv
+local log = require("r.log")
+
+function M.configure(config)
+    local ttime = uv.hrtime()
+    -- Check whether Tmux is OK
+    if vim.fn.executable("tmux") == 0 then
+        config.external_term = false
+        log.warn("tmux executable not found")
+        return
+    end
+
+    local tmuxversion
+    if config.uname:find("OpenBSD") then
+        -- Tmux does not have -V option on OpenBSD: https://github.com/jcfaria/Vim-R-plugin/issues/200
+        tmuxversion = "0.0"
+    else
+        tmuxversion = vim.fn.system("tmux -V")
+        if tmuxversion then
+            tmuxversion = tmuxversion:gsub(".* ([0-9]%.[0-9]).*", "%1")
+            if #tmuxversion ~= 3 then tmuxversion = "1.0" end
+            if tmuxversion < "3.0" then log.warn("R.nvim requires Tmux >= 3.0") end
+        end
+    end
+    ttime = (uv.hrtime() - ttime) / 1000000000
+    require("r.edit").add_to_debug_info("tmux setup", ttime, "Time")
+end
+
+return M
diff --git a/lua/r/platform/unix.lua b/lua/r/platform/unix.lua
new file mode 100644
index 00000000..ba3c1edf
--- /dev/null
+++ b/lua/r/platform/unix.lua
@@ -0,0 +1,54 @@
+local M = {}
+
+local uv = vim.uv
+local log = require("r.log")
+local utils = require("r.utils")
+local tmux = require("r.platform.tmux")
+
+function M.configure(config)
+    local utime = uv.hrtime()
+    if config.R_path ~= "" then
+        local rpath = vim.split(config.R_path, ":")
+        utils.resolve_fullpaths(rpath)
+
+        -- Add the current directory to the beginning of the path
+        table.insert(rpath, 1, "")
+
+        -- loop over rpath in reverse.
+        for i = #rpath, 1, -1 do
+            local dir = rpath[i]
+            local is_dir = uv.fs_stat(dir)
+            -- Each element in rpath must exist and be a directory
+            if is_dir and is_dir.type == "directory" then
+                vim.env.PATH = dir .. ":" .. vim.env.PATH
+            else
+                log.warn(
+                    '"'
+                        .. dir
+                        .. '" is not a directory. Fix the value of R_path in your config.'
+                )
+            end
+        end
+    end
+
+    utils.check_executable(config.R_app, function(exists)
+        if not exists then
+            log.warn(
+                '"'
+                    .. config.R_app
+                    .. '" not found. Fix the value of either R_path or R_app in your config.'
+            )
+        end
+    end)
+
+    if
+        (type(config.external_term) == "boolean" and config.external_term)
+        or type(config.external_term) == "string"
+    then
+        tmux.configure(config)
+    end
+    utime = (uv.hrtime() - utime) / 1000000000
+    require("r.edit").add_to_debug_info("unix setup", utime, "Time")
+end
+
+return M
diff --git a/lua/r/platform/windows.lua b/lua/r/platform/windows.lua
new file mode 100644
index 00000000..c27ffaa9
--- /dev/null
+++ b/lua/r/platform/windows.lua
@@ -0,0 +1,116 @@
+local M = {}
+
+local uv = vim.uv
+local utils = require("r.utils")
+local log = require("r.log")
+
+function M.configure(config)
+    local wtime = uv.hrtime()
+    local isi386 = false
+
+    if config.R_path ~= "" then
+        local rpath = vim.split(config.R_path, ";")
+        utils.resolve_fullpaths(rpath)
+        vim.fn.reverse(rpath)
+        for _, dir in ipairs(rpath) do
+            if vim.fn.isdirectory(dir) then
+                vim.env.PATH = dir .. ";" .. vim.env.PATH
+            else
+                log.warn(
+                    '"'
+                        .. dir
+                        .. '" is not a directory. Fix the value of R_path in your config.'
+                )
+            end
+        end
+    else
+        if vim.env.RTOOLS40_HOME then
+            if vim.fn.isdirectory(vim.env.RTOOLS40_HOME .. "\\mingw64\\bin\\") then
+                vim.env.PATH = vim.env.RTOOLS40_HOME .. "\\mingw64\\bin;" .. vim.env.PATH
+            elseif vim.fn.isdirectory(vim.env.RTOOLS40_HOME .. "\\usr\\bin") then
+                vim.env.PATH = vim.env.RTOOLS40_HOME .. "\\usr\\bin;" .. vim.env.PATH
+            end
+        else
+            if vim.fn.isdirectory("C:\\rtools40\\mingw64\\bin") then
+                vim.env.PATH = "C:\\rtools40\\mingw64\\bin;" .. vim.env.PATH
+            elseif vim.fn.isdirectory("C:\\rtools40\\usr\\bin") then
+                vim.env.PATH = "C:\\rtools40\\usr\\bin;" .. vim.env.PATH
+            end
+        end
+
+        local get_rip = function(run_cmd)
+            local resp = utils.system(run_cmd, { text = true }):wait()
+            local rout = vim.split(resp.stdout, "\n")
+            local rip = {}
+            for _, v in pairs(rout) do
+                if v:find("InstallPath.*REG_SZ") then table.insert(rip, v) end
+            end
+            return rip
+        end
+
+        -- Check both HKCU and HKLM. See #223
+        local reg_roots = { "HKCU", "HKLM" }
+        local rip = {}
+        for i = 1, #reg_roots do
+            if #rip == 0 then
+                local run_cmd =
+                    { "reg.exe", "QUERY", reg_roots[i] .. "\\SOFTWARE\\R-core\\R", "/s" }
+                rip = get_rip(run_cmd)
+
+                if #rip == 0 then
+                    -- Normally, 32 bit applications access only 32 bit registry and...
+                    -- We have to try again if the user has installed R only in the other architecture.
+                    if vim.fn.has("win64") then
+                        table.insert(run_cmd, "/reg:64")
+                    else
+                        table.insert(run_cmd, "/reg:32")
+                    end
+                    rip = get_rip(run_cmd)
+
+                    if #rip == 0 and i == #reg_roots then
+                        log.warn(
+                            "Could not find R path in Windows Registry. "
+                                .. "If you have already installed R, please, set the value of 'R_path'."
+                        )
+                        wtime = (uv.hrtime() - wtime) / 1000000000
+                        require("r.edit").add_to_debug_info(
+                            "windows setup",
+                            wtime,
+                            "Time"
+                        )
+                        return
+                    end
+                end
+            end
+        end
+
+        local rinstallpath = nil
+        rinstallpath = rip[1]
+        rinstallpath = rinstallpath:gsub(".*InstallPath.*REG_SZ%s*", "")
+        rinstallpath = rinstallpath:gsub("\n", "")
+        rinstallpath = rinstallpath:gsub("%s*$", "")
+        local hasR32 = vim.fn.isdirectory(rinstallpath .. "\\bin\\i386")
+        local hasR64 = vim.fn.isdirectory(rinstallpath .. "\\bin\\x64")
+        if hasR32 == 1 and hasR64 == 0 then isi386 = true end
+        if hasR64 == 1 and hasR32 == 0 then isi386 = false end
+        if hasR32 == 1 and isi386 then
+            vim.env.PATH = rinstallpath .. "\\bin\\i386;" .. vim.env.PATH
+        elseif hasR64 == 1 and not isi386 then
+            vim.env.PATH = rinstallpath .. "\\bin\\x64;" .. vim.env.PATH
+        else
+            vim.env.PATH = rinstallpath .. "\\bin;" .. vim.env.PATH
+        end
+    end
+
+    if not config.R_args then
+        if type(config.external_term) == "boolean" and config.external_term == false then
+            config.R_args = { "--no-save" }
+        else
+            config.R_args = { "--sdi", "--no-save" }
+        end
+    end
+    wtime = (uv.hrtime() - wtime) / 1000000000
+    require("r.edit").add_to_debug_info("windows setup", wtime, "Time")
+end
+
+return M
diff --git a/lua/r/rmd.lua b/lua/r/rmd.lua
index 60bda499..38ad733f 100644
--- a/lua/r/rmd.lua
+++ b/lua/r/rmd.lua
@@ -1,8 +1,8 @@
-local inform = require("r").inform
+local inform = require("r.log").inform
 local config = require("r.config").get_config()
 local send = require("r.send")
 local get_lang = require("r.utils").get_lang
-local uv = vim.loop
+local uv=vim.uv
 
 local M = {}
 
diff --git a/lua/r/rnw.lua b/lua/r/rnw.lua
index a7786219..ef0ce8bf 100644
--- a/lua/r/rnw.lua
+++ b/lua/r/rnw.lua
@@ -1,5 +1,5 @@
-local warn = require("r").warn
-local inform = require("r").inform
+local warn = require("r.log").warn
+local inform = require("r.log").inform
 local send = require("r.send")
 local utils = require("r.utils")
 local get_lang = require("r.utils").get_lang
diff --git a/lua/r/roxygen.lua b/lua/r/roxygen.lua
index dd587f0e..0165ea15 100644
--- a/lua/r/roxygen.lua
+++ b/lua/r/roxygen.lua
@@ -1,4 +1,4 @@
-local warn = require("r").warn
+local warn = require("r.log").warn
 local M = {}
 
 local parsers = require("nvim-treesitter.parsers")
diff --git a/lua/r/rproj.lua b/lua/r/rproj.lua
index fc2352d2..62af7852 100644
--- a/lua/r/rproj.lua
+++ b/lua/r/rproj.lua
@@ -1,5 +1,5 @@
 local read_dcf = require("r.utils").read_dcf
-local warn = require("r.init").warn
+local warn = require("r.log").warn
 
 local M = {}
 
diff --git a/lua/r/rstudio.lua b/lua/r/rstudio.lua
index af68a625..3949a13d 100644
--- a/lua/r/rstudio.lua
+++ b/lua/r/rstudio.lua
@@ -1,5 +1,5 @@
 local config = require("r.config").get_config()
-local warn = require("r").warn
+local warn = require("r.log").warn
 local M = {}
 
 M.start_RStudio = function()
diff --git a/lua/r/run.lua b/lua/r/run.lua
index 9c3ca924..9adf814d 100644
--- a/lua/r/run.lua
+++ b/lua/r/run.lua
@@ -2,15 +2,16 @@ local M = {}
 local config = require("r.config").get_config()
 local job = require("r.job")
 local edit = require("r.edit")
-local warn = require("r").warn
+local warn = require("r.log").warn
 local utils = require("r.utils")
 local send = require("r.send")
 local cursor = require("r.cursor")
+local hooks = require("r.hooks")
 local what_R = "R"
 local R_pid = 0
 local r_args
 local nseconds
-local uv = vim.loop
+local uv = vim.uv
 
 local start_R2
 start_R2 = function()
@@ -328,9 +329,7 @@ M.set_nvimcom_info = function(nvimcomversion, rpid, wid, r_info)
     end
 
     vim.g.R_Nvim_status = 7
-    if config.hook.after_R_start then
-        vim.schedule(function() config.hook.after_R_start() end)
-    end
+    hooks.run(config, "after_R_start")
     send.set_send_cmd_fun()
 end
 
diff --git a/lua/r/send.lua b/lua/r/send.lua
index 37036aed..e4a3a643 100644
--- a/lua/r/send.lua
+++ b/lua/r/send.lua
@@ -1,6 +1,6 @@
 local config = require("r.config").get_config()
-local warn = require("r").warn
-local inform = require("r").inform
+local warn = require("r.log").warn
+local inform = require("r.log").inform
 local utils = require("r.utils")
 local get_lang = require("r.utils").get_lang
 local edit = require("r.edit")
diff --git a/lua/r/server.lua b/lua/r/server.lua
index 3c20cf0d..f93fd3b3 100644
--- a/lua/r/server.lua
+++ b/lua/r/server.lua
@@ -1,9 +1,8 @@
 local edit = require("r.edit")
-local utils = require("r.utils")
 local job = require("r.job")
 local config = require("r.config").get_config()
-local warn = require("r").warn
-local uv = vim.loop
+local warn = require("r.log").warn
+local uv = vim.uv
 local b_warn = {}
 local b_err = {}
 local b_out = {}
@@ -12,6 +11,7 @@ local o_err = {}
 local pkgbuild_attempt = false
 local rhelp_list = {}
 local building_objls = false
+local check_executable = require("r.utils").check_executable
 
 local M = {}
 
@@ -199,6 +199,28 @@ local start_rnvimserver = function()
     )
 end
 
+-- Function to build the package
+local function build_package()
+    -- Change directory to config.tmpdir
+    local cmd = "cd "
+        .. vim.fn.shellescape(config.tmpdir)
+        .. " && "
+        .. vim.fn.shellescape("R")
+        .. " CMD build "
+        .. vim.fn.shellescape(config.rnvim_home .. "/nvimcom")
+
+    uv.spawn("sh", {
+        args = { "-c", cmd },
+        stdio = nil,
+    }, function(code)
+        if code == 0 then
+            M.check_nvimcom_version()
+        else
+            warn("Failed to build the package.")
+        end
+    end)
+end
+
 -- Check if the exit code of the script that built nvimcom was zero
 -- and if the file nvimcom_info seems to be OK (has three lines).
 local init_exit = function(_, data, _)
@@ -215,21 +237,13 @@ local init_exit = function(_, data, _)
         -- R.nvim/nvimcom directory not found. Perhaps R running in remote machine...
         -- Try to use local R to build the nvimcom package.
         pkgbuild_attempt = true
-        if vim.fn.executable("R") == 1 then
-            local shf = {
-                "cd " .. config.tmpdir,
-                "R CMD build " .. config.rnvim_home .. "/nvimcom",
-            }
-            vim.fn.writefile(shf, config.tmpdir .. "/buildpkg.sh")
-            local obj = utils
-                .system({ "sh", config.tmpdir .. "/buildpkg.sh" }, { text = true })
-                :wait()
-            if obj.code == 0 then
-                M.check_nvimcom_version()
-                cnv_again = 1
+        check_executable("R", function(exists)
+            if exists then
+                build_package()
+            else
+                warn('"R" executable not found.')
             end
-            vim.fn.delete(config.tmpdir .. "/buildpkg.sh")
-        end
+        end)
     else
         if vim.fn.filereadable(vim.fn.expand("~/.R/Makevars")) == 1 then
             warn(
diff --git a/lua/r/term.lua b/lua/r/term.lua
index 7d3b0041..52d9ea03 100644
--- a/lua/r/term.lua
+++ b/lua/r/term.lua
@@ -1,7 +1,7 @@
 local M = {}
 
 local config = require("r.config").get_config()
-local warn = require("r").warn
+local warn = require("r.log").warn
 local r_width = 80
 local number_col
 local r_bufnr = nil
diff --git a/lua/r/utils.lua b/lua/r/utils.lua
index 583aa5d1..8adfd2b7 100644
--- a/lua/r/utils.lua
+++ b/lua/r/utils.lua
@@ -1,7 +1,30 @@
-local warn = require("r").warn
+local warn = require("r.log").warn
+local uv = vim.uv
 
 local M = {}
 
+--- Tries to asynchronously run cmd with --version
+--- callback function recieves true if exit code 0, otherwise false
+--- false means:
+---     1. executable not found.
+---     2. Not enough memory to spawn a process.
+---     3. User does not have necessary file permissions.
+---     4. executable does not support --version flag.
+---@param cmd string
+---@param callback function
+function M.check_executable(cmd, callback)
+    uv.spawn(cmd, {
+        args = { "--version" }, -- Assuming the executable supports '--version'
+        stdio = nil, -- We don't need to capture output here
+    }, function(code)
+        if code == 0 then
+            callback(true)
+        else
+            callback(false)
+        end
+    end)
+end
+
 --- Get language at current cursor position of rhelp buffer
 ---@return string
 local get_rhelp_lang = function()
@@ -44,6 +67,12 @@ local get_rnw_lang = function()
     end
 end
 
+function M.resolve_fullpaths(tbl)
+    for i, v in ipairs(tbl) do
+        tbl[i] = uv.fs_realpath(v)
+    end
+end
+
 --- Get language at current cursor position
 ---@return string
 function M.get_lang()
@@ -244,8 +273,8 @@ function M.system(cmd, opts)
     end
 
     --- init state
-    local stdout = assert(vim.loop.new_pipe(false))
-    local stderr = assert(vim.loop.new_pipe(false))
+    local stdout = assert(uv.new_pipe(false))
+    local stderr = assert(uv.new_pipe(false))
     local stdout_data, stderr_data
     local state = {
         handle = nil,
@@ -263,7 +292,7 @@ function M.system(cmd, opts)
     }
 
     --- run the command
-    state.handle, state.pid = vim.loop.spawn(cmd[1], {
+    state.handle, state.pid = uv.spawn(cmd[1], {
         args = vim.list_slice(cmd, 2),
         stdio = { nil, stdout, stderr },
         cwd = opts.cwd,
diff --git a/lua/r/windows.lua b/lua/r/windows.lua
index 11337497..44b5315d 100644
--- a/lua/r/windows.lua
+++ b/lua/r/windows.lua
@@ -1,6 +1,6 @@
 local config = require("r.config").get_config()
 local utils = require("r.utils")
-local warn = require("r").warn
+local warn = require("r.log").warn
 local saved_home = nil
 local M = {}