diff --git a/ognibuild/__init__.py b/ognibuild/__init__.py
index b4f0492..1261574 100644
--- a/ognibuild/__init__.py
+++ b/ognibuild/__init__.py
@@ -21,6 +21,7 @@ import stat
 import subprocess
 import sys
 from typing import List
+from .session import run_with_tee
 
 
 DEFAULT_PYTHON = 'python3'
@@ -59,18 +60,6 @@ def warning(m):
     sys.stderr.write('WARNING: %s\n' % m)
 
 
-def run_with_tee(session, args: List[str], **kwargs):
-    p = session.Popen(
-        args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kwargs)
-    contents = []
-    while p.poll() is None:
-        line = p.stdout.readline()
-        sys.stdout.buffer.write(line)
-        sys.stdout.buffer.flush()
-        contents.append(line.decode('utf-8', 'surrogateescape'))
-    return p.returncode, contents
-
-
 def run_apt(session, args: List[str]) -> None:
     args = ['apt', '-y'] + args
     retcode, lines = run_with_tee(session, args, cwd='/', user='root')
diff --git a/ognibuild/dist.py b/ognibuild/dist.py
index 8d8c688..2213076 100644
--- a/ognibuild/dist.py
+++ b/ognibuild/dist.py
@@ -33,6 +33,7 @@ from breezy.workingtree import WorkingTree
 
 from breezy.plugins.debian.repack_tarball import get_filetype
 
+from .session import run_with_tee
 from .debian.fix_build import (
     DependencyContext,
     resolve_error,
@@ -93,18 +94,6 @@ def satisfy_build_deps(session: Session, tree):
     apt_satisfy(session, deps)
 
 
-def run_with_tee(session: Session, args: List[str], **kwargs):
-    p = session.Popen(
-        args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kwargs)
-    contents = []
-    while p.poll() is None:
-        line = p.stdout.readline()
-        sys.stdout.buffer.write(line)
-        sys.stdout.buffer.flush()
-        contents.append(line.decode('utf-8', 'surrogateescape'))
-    return p.returncode, contents
-
-
 class SchrootDependencyContext(DependencyContext):
 
     def __init__(self, session):
diff --git a/ognibuild/session/__init__.py b/ognibuild/session/__init__.py
index 6917def..3cc87af 100644
--- a/ognibuild/session/__init__.py
+++ b/ognibuild/session/__init__.py
@@ -17,6 +17,8 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
 from typing import Optional, List, Dict
+import sys
+import subprocess
 
 
 class Session(object):
@@ -64,3 +66,15 @@ class Session(object):
 
 class SessionSetupFailure(Exception):
     """Session failed to be set up."""
+
+
+def run_with_tee(session: Session, args: List[str], **kwargs):
+    p = session.Popen(
+        args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kwargs)
+    contents = []
+    while p.poll() is None:
+        line = p.stdout.readline()
+        sys.stdout.buffer.write(line)
+        sys.stdout.buffer.flush()
+        contents.append(line.decode('utf-8', 'surrogateescape'))
+    return p.returncode, contents