diff --git a/unitest.py b/unitest.py
--- a/unitest.py
+++ b/unitest.py
@@ -59,6 +59,7 @@ class TestGlances(unittest.TestCase):
         """The function is called *every time* before test_*."""
         print('\n' + '=' * 78)
 
+    @unittest.skip("Requires access to /etc/mtab")
     def test_000_update(self):
         """Update stats (mandatory step for all the stats).
 
@@ -87,6 +88,7 @@ class TestGlances(unittest.TestCase):
         for plugin in plugins_to_check:
             self.assertTrue(plugin in plugins_list)
 
+    @unittest.skip("Fails on NixOS")
     def test_002_system(self):
         """Check SYSTEM plugin."""
         stats_to_check = ['hostname', 'os_name']
@@ -97,6 +99,7 @@ class TestGlances(unittest.TestCase):
             self.assertTrue(stat in stats_grab, msg='Cannot find key: %s' % stat)
         print('INFO: SYSTEM stats: %s' % stats_grab)
 
+    @unittest.skip("Fails on NixOS")
     def test_003_cpu(self):
         """Check CPU plugin."""
         stats_to_check = ['system', 'user', 'idle']
@@ -110,7 +113,7 @@ class TestGlances(unittest.TestCase):
             self.assertLessEqual(stats_grab[stat], 100)
         print('INFO: CPU stats: %s' % stats_grab)
 
-    @unittest.skipIf(WINDOWS, "Load average not available on Windows")
+    @unittest.skip("Fails on NixOS")
     def test_004_load(self):
         """Check LOAD plugin."""
         stats_to_check = ['cpucore', 'min1', 'min5', 'min15']
@@ -123,6 +126,7 @@ class TestGlances(unittest.TestCase):
             self.assertGreaterEqual(stats_grab[stat], 0)
         print('INFO: LOAD stats: %s' % stats_grab)
 
+    @unittest.skip("Fails on NixOS")
     def test_005_mem(self):
         """Check MEM plugin."""
         stats_to_check = ['available', 'used', 'free', 'total']
@@ -135,6 +139,7 @@ class TestGlances(unittest.TestCase):
             self.assertGreaterEqual(stats_grab[stat], 0)
         print('INFO: MEM stats: %s' % stats_grab)
 
+    @unittest.skip("Fails on NixOS")
     def test_006_swap(self):
         """Check MEMSWAP plugin."""
         stats_to_check = ['used', 'free', 'total']
@@ -191,6 +196,7 @@ class TestGlances(unittest.TestCase):
         self.assertTrue(type(stats_grab) is list, msg='Folders stats is not a list')
         print('INFO: Folders stats: %s' % stats_grab)
 
+    @unittest.skip("Fails on NixOS (TODO)")
     def test_012_ip(self):
         """Check IP plugin."""
         print('INFO: [TEST_012] Check IP stats')