improve install.py after problems with linse-gas10ka

- use --break-system-packages for pip
- rename box
- remove some unused stuff about display

cfg/linse-gas10ka_5b265c.cfg

@@ -11,3 +11,7 @@ eth3=192.168.3.3
 [DISPLAY]
 ; please refer to README.md for help
 startup_text=startup...|HOST|ADDR
+
+[FRAPPY]
+cfg = kapillarheizung
+port= 5010

install.py

@@ -206,7 +206,7 @@ def pip():
             pipcmd = 'pip3 install -r %s' % tmpname
         else:
             tmpname = join('/home', user, 'pip_requirements.tmp')
-            pipcmd = 'sudo --user %s pip3 install --user -r %s' % (user, tmpname)
+            pipcmd = 'sudo --user %s pip3 install --user --break-system-packages -r %s' % (user, tmpname)
         filename = tmpname.replace('.tmp', '.txt')
         content = ''.join('# --- for %s ---\n%s\n' % kv for kv in requirements.items())
         if write_when_new(filename, content, True):
@@ -533,25 +533,11 @@ def handle_config():
                     os.system('apt-get install isc-dhcp-server')
                 exit()
         elif doit:
-            check_service('isc-dhcp-server', False)
-        content = []
-        dirty = False
-        for section, section_dict in config.items():
-            # if COMMENT not in section_dict:
-            #     dirty = True
-            # content.append('[%s]' % section)
-            # content.append(COMMENT)
-            if section == 'DISPLAY':
-                if display_update(section_dict):
-                    to_start['display'] = 'restart'
-            # for key, value in section_dict.items():
-            #     content.append('%s=%s' % (key, value))
-            # content.append('')
-        if dirty:
-            print(cfgfile)
-            print('\n'.join(content))
-            #with open(cfgfile, 'w') as f:
-            #    f.write('\n'.join(content))
+            unix_cmd('systemctl stop isc-dhcp-server')
+            unix_cmd('systemctl disable isc-dhcp-server')
+        displaycfg = config.get('DISPLAY')
+        if displaycfg and display_update(displaycfg):
+             to_start['display'] = 'restart'
     except Exception as e:
         print('ERROR: can not handle %s %s: %r' % (box.hostname, ifname, e))
         raise
@@ -597,7 +583,7 @@ def handle_config():
         print('interface name system has to be changed from enp*s0 to eth*')
         if replace_in_file('/etc/default/grub',
                            r'GRUB_CMDLINE_LINUX_DEFAULT="quiet(.*)"',
-                           ' net.ifnames=0"'):
+                           ' net.ifnames=0'):
             do_cmd('update-grub')
 
     result = [f'config file:\n  {cfgfile}']