diff --git a/package/gluon-config-mode-core/files/lib/gluon/config-mode/view/wizard/reboot.html b/package/gluon-config-mode-core/files/lib/gluon/config-mode/view/wizard/reboot.html
index 6c65010b..13f2b52f 100644
--- a/package/gluon-config-mode-core/files/lib/gluon/config-mode/view/wizard/reboot.html
+++ b/package/gluon-config-mode-core/files/lib/gluon/config-mode/view/wizard/reboot.html
@@ -1,19 +1,12 @@
 <h2><%:Your node's setup is now complete.%></h2>
 <%
-	local fs = require "nixio.fs"
-	local util = require "nixio.util"
-
-	local parts_dir = "/lib/gluon/config-mode/reboot/"
-	local files = util.consume(fs.dir(parts_dir) or function() end)
-	table.sort(files)
+	local util = require "gluon.util"
 
 	local parts = {}
-	for _, entry in ipairs(files) do
-		if entry:sub(1, 1) ~= '.' then
-			local p = assert(loadfile(parts_dir .. entry))
-			setfenv(p, getfenv())
-			table.insert(parts, p)
-		end
+	for _, entry in ipairs(util.glob('/lib/gluon/config-mode/reboot/*')) do
+		local p = assert(loadfile(entry))
+		setfenv(p, getfenv())
+		table.insert(parts, p)
 	end
 
 	for _, p in ipairs(parts) do
diff --git a/package/gluon-config-mode-core/luasrc/lib/gluon/config-mode/model/gluon-config-mode/wizard.lua b/package/gluon-config-mode-core/luasrc/lib/gluon/config-mode/model/gluon-config-mode/wizard.lua
index ca400a9e..d32b56ac 100644
--- a/package/gluon-config-mode-core/luasrc/lib/gluon/config-mode/model/gluon-config-mode/wizard.lua
+++ b/package/gluon-config-mode-core/luasrc/lib/gluon/config-mode/model/gluon-config-mode/wizard.lua
@@ -1,22 +1,13 @@
-local fs = require "nixio.fs"
 local util = require "gluon.util"
-local nixio_util = require "nixio.util"
-
 local uci = require("simple-uci").cursor()
 
-local wizard_dir = "/lib/gluon/config-mode/wizard/"
-
-local files = nixio_util.consume(fs.dir(wizard_dir) or function() end)
-table.sort(files)
 
 local wizard = {}
-for _, entry in ipairs(files) do
-	if entry:sub(1, 1) ~= '.' then
-		local f = assert(loadfile(wizard_dir .. entry))
-		setfenv(f, getfenv())
-		local w = f()
-		table.insert(wizard, w)
-	end
+for _, entry in ipairs(util.glob('/lib/gluon/config-mode/wizard/*')) do
+	local f = assert(loadfile(entry))
+	setfenv(f, getfenv())
+	local w = f()
+	table.insert(wizard, w)
 end
 
 local f = Form(translate("Welcome!"))
@@ -45,7 +36,8 @@ for _, w in ipairs(wizard) do
 end
 
 function f:write()
-	local nixio = require "nixio"
+	local fcntl = require 'posix.fcntl'
+	local unistd = require 'posix.unistd'
 
 	uci:set("gluon-setup-mode", uci:get_first("gluon-setup-mode", "setup_mode"), "configured", true)
 
@@ -60,15 +52,16 @@ function f:write()
 	f.package = "gluon-config-mode-core"
 	f.hidenav = true
 
-	if nixio.fork() == 0 then
+	if unistd.fork() == 0 then
 		-- Replace stdout with /dev/null
-		nixio.dup(nixio.open('/dev/null', 'w'), nixio.stdout)
+		local null = fcntl.open('/dev/null', fcntl.O_WRONLY)
+		unistd.dup2(null, unistd.STDOUT_FILENO)
 
 		-- Sleep a little so the browser can fetch everything required to
 		-- display the reboot page, then reboot the device.
-		nixio.nanosleep(1)
+		unistd.sleep(1)
 
-		nixio.execp("reboot")
+		unistd.execp('reboot', {[0] = 'reboot'})
 	end
 end
 
diff --git a/package/gluon-config-mode-domain-select/luasrc/lib/gluon/config-mode/wizard/0200-domain-select.lua b/package/gluon-config-mode-domain-select/luasrc/lib/gluon/config-mode/wizard/0200-domain-select.lua
index 9496e99f..85977f68 100644
--- a/package/gluon-config-mode-domain-select/luasrc/lib/gluon/config-mode/wizard/0200-domain-select.lua
+++ b/package/gluon-config-mode-domain-select/luasrc/lib/gluon/config-mode/wizard/0200-domain-select.lua
@@ -2,7 +2,6 @@
 return function(form, uci)
 	local site_i18n = i18n 'gluon-site'
 
-	local fs = require 'nixio.fs'
 	local json = require 'jsonc'
 	local site = require 'gluon.site'
 	local util = require 'gluon.util'
@@ -22,7 +21,7 @@ return function(form, uci)
 
 	local function get_domain_list()
 		local list = {}
-		for domain_path in fs.glob('/lib/gluon/domains/*.json') do
+		for _, domain_path in ipairs(util.glob('/lib/gluon/domains/*.json')) do
 			local domain_code = domain_path:match('([^/]+)%.json$')
 			local domain = assert(json.load(domain_path))
 
diff --git a/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua b/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua
index 16282eba..b94d194a 100644
--- a/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua
+++ b/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua
@@ -1,7 +1,7 @@
 local site_i18n = i18n 'gluon-site'
 
 local uci = require("simple-uci").cursor()
-local fs = require "nixio.fs"
+local unistd = require 'posix.unistd'
 
 local platform = require 'gluon.platform'
 local site = require 'gluon.site'
@@ -11,8 +11,8 @@ local util = require "gluon.util"
 local pretty_hostname = require 'pretty_hostname'
 
 
-local has_fastd = fs.access('/lib/gluon/mesh-vpn/fastd')
-local has_tunneldigger = fs.access('/lib/gluon/mesh-vpn/tunneldigger')
+local has_fastd = unistd.access('/lib/gluon/mesh-vpn/fastd')
+local has_tunneldigger = unistd.access('/lib/gluon/mesh-vpn/tunneldigger')
 
 
 local hostname = pretty_hostname.get(uci)
diff --git a/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/wizard/0300-mesh-vpn.lua b/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/wizard/0300-mesh-vpn.lua
index 1ad50794..98f27048 100644
--- a/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/wizard/0300-mesh-vpn.lua
+++ b/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/wizard/0300-mesh-vpn.lua
@@ -1,7 +1,7 @@
-local fs = require "nixio.fs"
+local unistd = require 'posix.unistd'
 
-local has_fastd = fs.access('/lib/gluon/mesh-vpn/fastd')
-local has_tunneldigger = fs.access('/lib/gluon/mesh-vpn/tunneldigger')
+local has_fastd = unistd.access('/lib/gluon/mesh-vpn/fastd')
+local has_tunneldigger = unistd.access('/lib/gluon/mesh-vpn/tunneldigger')
 
 return function(form, uci)
 	if not (has_fastd or has_tunneldigger) then
diff --git a/package/gluon-config-mode-theme/files/lib/gluon/config-mode/view/theme/layout.html b/package/gluon-config-mode-theme/files/lib/gluon/config-mode/view/theme/layout.html
index 874419a7..c80cd4b3 100644
--- a/package/gluon-config-mode-theme/files/lib/gluon/config-mode/view/theme/layout.html
+++ b/package/gluon-config-mode-theme/files/lib/gluon/config-mode/view/theme/layout.html
@@ -9,12 +9,12 @@ You may obtain a copy of the License at
 	http://www.apache.org/licenses/LICENSE-2.0
 -%>
 <%
-	local uci  = require("simple-uci").cursor()
-	local fs   = require "nixio.fs"
 	local pretty_hostname = require "pretty_hostname"
+	local uci  = require("simple-uci").cursor()
+	local util = require "gluon.util"
 
 	local hostname = pretty_hostname.get(uci)
-	local release = fs.readfile("/lib/gluon/release")
+	local release = util.readfile("/lib/gluon/release")
 
 	local root = node()
 	local rnode = node(unpack(request))