--- a/python/c3/builder.py	Wed Jul 31 17:57:03 2013 +0200
+++ b/python/c3/builder.py	Wed Jul 31 21:20:58 2013 +0200
@@ -1,3 +1,4 @@
+import logging
 import ppci
 from . import Parser, TypeChecker, Analyzer, CodeGenerator
 from . astprinter import AstPrinter
@@ -9,6 +10,7 @@
         Reports errors to the diagnostics system
     """
     def __init__(self, diag):
+        self.logger = logging.getLogger('c3')
         self.diag = diag
         self.parser = Parser(diag)
         self.tc = TypeChecker(diag)
@@ -34,6 +36,7 @@
         pkg = self.parser.parseSource(src)
         if not pkg:
             return
+        logging.getLogger('c3').info('Source parsed')
 
         # TODO: merge the two below?
         #AstPrinter().printAst(pkg)

--- a/python/c3/parser.py	Wed Jul 31 17:57:03 2013 +0200
+++ b/python/c3/parser.py	Wed Jul 31 21:20:58 2013 +0200
@@ -1,18 +1,21 @@
+import logging
 from . import astnodes, lexer
 from ppci import CompilerError
 
 class Parser:
     """ Parses sourcecode into an abstract syntax tree (AST) """
     def __init__(self, diag):
+        self.logger = logging.getLogger('c3')
         self.diag = diag
 
     def parseSource(self, source):
-      self.initLex(source)
-      try:
-         self.parsePackage()
-         return self.mod
-      except CompilerError as e:
-         self.diag.addDiag(e)
+        self.logger.info('Parsing source')
+        self.initLex(source)
+        try:
+            self.parsePackage()
+            return self.mod
+        except CompilerError as e:
+            self.diag.addDiag(e)
 
     def Error(self, msg):
         raise CompilerError(msg, self.token.loc)

--- a/python/dag.py	Wed Jul 31 17:57:03 2013 +0200
+++ b/python/dag.py	Wed Jul 31 21:20:58 2013 +0200
@@ -15,6 +15,7 @@
    def __init__(self, bb):
       self.mapping = {}
       self.buildFromBB(bb)
+
    def buildFromBB(self, bb):
       for ins in bb.Instructions:
          if type(ins) is ir.BinaryOperator:
@@ -39,6 +40,7 @@
             self.mapping[ins.result] = N
          else:
             pass
+
    def dumpgv(self, outf):
       outf.write('subgraph {0} {{\n'.format(id(self)))
       for node in self.mapping.values():

--- a/python/ide.py	Wed Jul 31 17:57:03 2013 +0200
+++ b/python/ide.py	Wed Jul 31 21:20:58 2013 +0200
@@ -14,6 +14,7 @@
 import c3
 import zcc
 import outstream
+import logging
 
 
 class BuildOutput(QTextEdit):
@@ -295,6 +296,7 @@
         self.buildOutput.append("Done!")
 
 if __name__ == '__main__':
+    logging.basicConfig(level=logging.DEBUG)
     app = QApplication(sys.argv)
     ide = Ide()
     ide.show()