I'd like you to work on a larger feature: support for occam #include module directives, specifically allowing programs that #include "course" to use the "course module". The module's source code is in the separate project "kroc" which is cloned in the kroc subdirectory of this project so we can access its files. For example the source for "course" is at ./kroc/modules/course . The idea is to implement this module support by means of direct textural include by the transpiler. However there is an extra complication which is that occam modules are not simply defined by the set of files in a directory. Rather the files that comprise a given module/library are defined in Python files named SConscript. These files may be present in subdirectories, with the "root" SConscript file having Python code that performs a recursive descent into the subdirectories. You can see the files in the course module directory tree for example. There is a tool used by the kroc project named occbuild. Its source can be found at ./kroc/site_scons/site_tools/occbuild.py. Therefor the complete feature inplementation requires: being able to process the SConscript files such as to generate a corresponding .module file that has #INCLUDE directives for all the relevant library source files, and implementing the #INCLUDE directive itself. In addition it will be necessary to implement the preprocessor directives (#IF NOT (DEFINED ...), #DEFINE, #ENDIF) which are used to prevent including the same file multiple times. I suggest you tackle each of these sub-features in turn rather than trying to implement everything at once.