[Fixed] Internal netlist generation when no lib

Related to #242

CHANGELOG.md

@@ -37,6 +37,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - SCH Print and Netlist: name collisions. When the default name used by KiCad
   belongs to an already existing file. (#244)
 - Install checker: fixed problems to detect iBoM installed as plugin. (#209)
+- Internal Netlist generation (i.e. iBoM with variants): problems withg
+  components that doesn't specify a library. (See #242)
 
 ### Changed
 - The order in which main sections are parsed is now fixed.

kibot/kicad/v5_sch.py

@@ -1949,7 +1949,11 @@ class Schematic(object):
                 continue
             libpart = SubElement(libparts, 'libpart')
             res = k.split(':')
-            if res:
+            cres = len(res)
+            if cres == 1:
+                libpart.set('lib', '')
+                libpart.set('part', res[0])
+            elif cres == 2:
                 libpart.set('lib', res[0])
                 libpart.set('part', res[1])
             if v.alias: