commit 982d29ac9d5cebf0b3fde2e6e95a5d67804c074a
Author: david.sorber <david.sorber@gmail.com>
Date:   Tue Apr 7 21:48:38 2015 -0400

    Cleaned up the first version of the script and simplified it a bit as well.

diff --git a/software/apt-tools/get_deps.py b/software/apt-tools/get_deps.py
old mode 100644
new mode 100755
index 2422708..8b4e17b
--- a/software/apt-tools/get_deps.py
+++ b/software/apt-tools/get_deps.py
@@ -1,59 +1,69 @@
 #!/usr/bin/python3
+import argparse
 import copy
 from distutils.version import LooseVersion
 import sys
 
 import apt
 
-# List of "additional" packages to install
-ADDTIONAL_PACKAGES = [
-    'htop',
-    'iotop',
-    'vim',
-    'openssh-server',
-    'build-essential']
+# Virtual package mapping
+virtual_mapping = {'awk': 'gawk'}
 
 def main():
-            
-    # Create cache
-    cache = apt.Cache()
-    cache.open()
     
-    in_packages = copy.copy(ADDTIONAL_PACKAGES)
+    parser = argparse.ArgumentParser(description='Process some integers.')
+    parser.add_argument('-v', '--verbose', action='store_true')
+    parser.add_argument('input_package_files', action='store')
+    args = parser.parse_args()
+    
+    # Input packages
+    in_packages = []
+    
+    # Parse input package files
+    for filename in args.input_package_files.split(','):
+        with open(filename) as in_file:
+            for line in in_file:
+                line = line.strip()
+                if line:
+                    in_packages.append(line)
+    
+    # Open APT cache
+    cache = apt.Cache(memonly=True)
+    cache.open()
     
     packages = set()
-    package_deps = {}
 
     while True:
         try:
             # Grab next package 
             pkg_name = in_packages.pop()        
-            print('Package: {:s}'.format(pkg_name))
-                        
+            #~ print('Package: {:s}'.format(pkg_name))
+      
+            if pkg_name not in cache:
+                if pkg_name in virtual_mapping:
+                    pkg_name = virtual_mapping[pkg_name]
+                else:
+                    continue
+      
             # Add this package (with version) to the list of packages
             if pkg_name not in packages:
                 packages.add(pkg_name)
-            
-            try:
-                package_deps[pkg_name] = cache[pkg_name].versions[0].dependencies
-            except KeyError:
-                continue
-                
-            for pdep in package_deps[pkg_name]:
+
+            # Get package dependencies
+            for pdep in cache[pkg_name].versions[0].dependencies:
                 dep_name = pdep[0].name
-                print('\tDependency: {:s}'.format(dep_name))
+                #~ print('\tDependency: {:s}'.format(dep_name))
                 if dep_name not in packages:
+                    if dep_name in virtual_mapping:
+                        dep_name = virtual_mapping[dep_name]
                     packages.add(dep_name)
                     in_packages.insert(0, dep_name)
-                    
         except IndexError:
             break
 
-    print('\n\n')
-    for package in packages:
+    # Print out the gathered package names
+    for package in sorted(packages):
         print(package)
-    print('\n\n')
-    
     
 if __name__ == '__main__':
     sys.exit(main())