diff --git a/helpers.py b/helpers.py
index ab320ab..f8ddd03 100644
--- a/helpers.py
+++ b/helpers.py
@@ -1,4 +1,5 @@
 import sys, os, errno
+import vars
 
 
 def atoi(v):
@@ -39,3 +40,49 @@ def mkdirp(d, mode=None):
             raise
 
 
+def _log(s):
+    sys.stdout.flush()
+    sys.stderr.write(s)
+    sys.stderr.flush()
+
+
+def _clog(s):
+    _log('\x1b[32mredo: %s\x1b[1m%s\x1b[m' % (vars.DEPTH, s))
+def _bwlog(s):
+    _log('redo: %s%s' % (vars.DEPTH, s))
+if os.isatty(2):
+    log = _clog
+else:
+    log = _bwlog
+
+
+def debug(s):
+    if vars.DEBUG:
+        _log('redo: %s%s' % (vars.DEPTH, s))
+
+
+
+def relpath(t, base):
+    t = os.path.abspath(t)
+    tparts = t.split('/')
+    bparts = base.split('/')
+    for tp,bp in zip(tparts,bparts):
+        if tp != bp:
+            break
+        tparts.pop(0)
+        bparts.pop(0)
+    while bparts:
+        tparts.insert(0, '..')
+        bparts.pop(0)
+    return '/'.join(tparts)
+
+
+def sname(typ, t):
+    # FIXME: t.replace(...) is non-reversible and non-unique here!
+    tnew = relpath(t, vars.BASE)
+    #log('sname: (%r) %r -> %r\n' % (vars.BASE, t, tnew))
+    return vars.BASE + ('/.redo/%s^%s' % (typ, tnew.replace('/', '^')))
+
+
+def add_dep(t, mode, dep):
+    open(sname('dep', t), 'a').write('%s %s\n' % (mode, dep))
diff --git a/libdo.py b/libdo.py
deleted file mode 100644
index 0cd859a..0000000
--- a/libdo.py
+++ /dev/null
@@ -1,27 +0,0 @@
-import sys, os
-import vars
-
-def relpath(t, base):
-    t = os.path.abspath(t)
-    tparts = t.split('/')
-    bparts = base.split('/')
-    for tp,bp in zip(tparts,bparts):
-        if tp != bp:
-            break
-        tparts.pop(0)
-        bparts.pop(0)
-    while bparts:
-        tparts.insert(0, '..')
-        bparts.pop(0)
-    return '/'.join(tparts)
-
-
-def sname(typ, t):
-    # FIXME: t.replace(...) is non-reversible and non-unique here!
-    tnew = relpath(t, vars.BASE)
-    #log('sname: (%r) %r -> %r\n' % (vars.BASE, t, tnew))
-    return vars.BASE + ('/.redo/%s^%s' % (typ, tnew.replace('/', '^')))
-
-
-def add_dep(t, mode, dep):
-    open(sname('dep', t), 'a').write('%s %s\n' % (mode, dep))
diff --git a/log.py b/log.py
deleted file mode 100644
index dc8b24c..0000000
--- a/log.py
+++ /dev/null
@@ -1,23 +0,0 @@
-import sys, os
-import vars
-
-
-def _log(s):
-    sys.stdout.flush()
-    sys.stderr.write(s)
-    sys.stderr.flush()
-
-
-def _clog(s):
-    _log('\x1b[32mredo: %s\x1b[1m%s\x1b[m' % (vars.DEPTH, s))
-def _bwlog(s):
-    _log('redo: %s%s' % (vars.DEPTH, s))
-if os.isatty(2):
-    log = _clog
-else:
-    log = _bwlog
-
-
-def debug(s):
-    if vars.DEBUG:
-        _log('redo: %s%s' % (vars.DEPTH, s))
diff --git a/redo-ifchange.py b/redo-ifchange.py
index 07a9a39..b3cdc4c 100755
--- a/redo-ifchange.py
+++ b/redo-ifchange.py
@@ -2,8 +2,6 @@
 import sys, os
 import vars
 from helpers import *
-from log import *
-from libdo import *
 
 
 def _dirty_deps(t, depth):
diff --git a/redo.py b/redo.py
index e1bdb92..a4cce51 100755
--- a/redo.py
+++ b/redo.py
@@ -1,7 +1,6 @@
 #!/usr/bin/python
 import sys, os, subprocess
 import options
-from helpers import *
 
 optspec = """
 redo [targets...]
@@ -14,6 +13,25 @@ o = options.Options('redo', optspec)
 
 targets = extra or ['it']
 
+if opt.debug:
+    os.environ['REDO_DEBUG'] = '1'
+if opt.verbose:
+    os.environ['REDO_VERBOSE'] = '1'
+
+if not os.environ.get('REDO_BASE', ''):
+    base = os.path.commonprefix([os.path.abspath(os.path.dirname(t))
+                                 for t in targets] + [os.getcwd()])
+    bsplit = base.split('/')
+    for i in range(len(bsplit)-1, 0, -1):
+        newbase = '%s/.redo' % '/'.join(bsplit[:i])
+        if os.path.exists(newbase):
+            base = newbase
+            break
+    os.environ['REDO_BASE'] = base
+
+import vars
+from helpers import *
+
 
 def find_do_file(t):
     dofile = '%s.do' % t
@@ -87,26 +105,6 @@ def build(t):
         raise Exception('non-zero return code building %r' % t)
 
 
-if opt.debug:
-    os.environ['REDO_DEBUG'] = '1'
-if opt.verbose:
-    os.environ['REDO_VERBOSE'] = '1'
-
-if not os.environ.get('REDO_BASE', ''):
-    base = os.path.commonprefix([os.path.abspath(os.path.dirname(t))
-                                 for t in targets] + [os.getcwd()])
-    bsplit = base.split('/')
-    for i in range(len(bsplit)-1, 0, -1):
-        newbase = '%s/.redo' % '/'.join(bsplit[:i])
-        if os.path.exists(newbase):
-            base = newbase
-            break
-    os.environ['REDO_BASE'] = base
-
-import vars
-from log import *
-from libdo import *
-
 if not vars.DEPTH:
     # toplevel call to redo
     exenames = [os.path.abspath(sys.argv[0]), os.path.realpath(sys.argv[0])]