Index: Makefile
===================================================================
--- Makefile	(revision 517046)
+++ Makefile	(working copy)
@@ -20,7 +20,7 @@
 GH_ACCOUNT=	scp-fs2open
 GH_PROJECT=	wxLauncher
 
-USES=		cmake openal pkgconfig python:2.7,build sdl
+USES=		cmake openal pkgconfig python:build sdl
 USE_SDL=	sdl2
 CMAKE_ARGS+=	-DRESOURCES_PATH:STRING="${DATADIR}"
 
Index: files/patch-scripts_helpparsers.py
===================================================================
--- files/patch-scripts_helpparsers.py	(nonexistent)
+++ files/patch-scripts_helpparsers.py	(working copy)
@@ -0,0 +1,22 @@
+--- scripts/helpparsers.py.orig	2020-09-26 12:23:32 UTC
++++ scripts/helpparsers.py
+@@ -6,16 +6,16 @@ import traceback
+ import sys
+ import shutil
+ 
+-import HTMLParser
++import html.parser
+ 
+ from dataclasses import Tag
+ from utilfunctions import update_attribute, change_filename
+ 
+-class OutputParser(HTMLParser.HTMLParser):
++class OutputParser(html.parser.HTMLParser):
+   """The class is designed to be used as a base class.  It will output the same html structure as the input file into a file like object (only needs write)."""
+       
+   def __init__(self, file, *args, **kwargs):
+-    HTMLParser.HTMLParser.__init__(self, *args, **kwargs)
++    html.parser.HTMLParser.__init__(self, *args, **kwargs)
+     
+     if hasattr(file, 'write'):
+       self.outputfile = file
Index: files/patch-scripts_onlinehelpmaker.py
===================================================================
--- files/patch-scripts_onlinehelpmaker.py	(nonexistent)
+++ files/patch-scripts_onlinehelpmaker.py	(working copy)
@@ -0,0 +1,54 @@
+--- scripts/onlinehelpmaker.py.orig	2015-08-26 04:54:06 UTC
++++ scripts/onlinehelpmaker.py
+@@ -9,14 +9,14 @@ import string
+ from optparse import OptionParser
+ import logging
+ NOTICE = 25 # added level for app
+-import HTMLParser
++import html.parser
+ 
+ try:
+   import markdown
+ except ImportError:
+-  print "ERROR: Unable to import markdown the markup parser."
+-  print " Make sure that markdown has been installed"
+-  print "  see the ReadMe.txt for more information"
++  print("ERROR: Unable to import markdown the markup parser.")
++  print(" Make sure that markdown has been installed")
++  print("  see the ReadMe.txt for more information")
+   raise
+ 
+ from helpparsers import Stage2Parser, Stage3Parser, Stage4Parser, Stage5Parser
+@@ -203,7 +203,7 @@ def generate_paths(options):
+   for i in range(1, 7):
+     paths['stage%d'%(i)] = os.path.join(options.temp, 'stage%d'%(i))
+ 
+-  for path in paths.values():
++  for path in list(paths.values()):
+     if not os.path.exists(path):
+       logging.debug(" Making %s", path)
+       os.makedirs(path)
+@@ -304,9 +304,9 @@ def process_input_stage3(file, options, files, extrafi
+   outfile = open(outname, mode="w")
+ 
+   #figure out what subdirectory of the onlinehelp I am in
+-  subdir = string.replace(os.path.dirname(outname), os.path.normpath(files['stage3']), "")
++  subdir = os.path.dirname(outname).replace(os.path.normpath(files['stage3']), "")
+   if subdir.startswith(os.path.sep):
+-    subdir = string.replace(subdir, os.path.sep, "", 1) # I only want to remove the leading sep
++    subdir = subdir.replace(os.path.sep, "", 1) # I only want to remove the leading sep
+     
+   parser = Stage3Parser(options, files, file=outfile, extrafiles=extrafiles, subdir=subdir)
+   parser.feed(input)
+@@ -325,9 +325,9 @@ def process_input_stage4(file, options, files):
+   outfile = open(outname, mode="w")
+   
+   #figure out what subdirectory of the onlinehelp I am in
+-  subdir = string.replace(os.path.dirname(outname), os.path.normpath(files['stage4']), "")
++  subdir = os.path.dirname(outname).replace(os.path.normpath(files['stage4']), "")
+   if subdir.startswith(os.path.sep):
+-    subdir = string.replace(subdir, os.path.sep, "", 1) # I only want to remove the leading sep
++    subdir = subdir.replace(os.path.sep, "", 1) # I only want to remove the leading sep
+ 
+   parser = Stage4Parser(files=files, file=outfile, options=options,
+                         subdir=subdir)