Re-building Snapcraft in a container fails the second time around. $ export SNAPCRAFT_CONTAINER_BUILDS=1 $ snapcraft Preparing to build snapcraft Building snapcraft [...] Building wheels for collected packages: snapcraft, python-apt, python-distutils-extra Running setup.py bdist_wheel for snapcraft ... done Stored in directory: /tmp/tmp4in0p1di Running setup.py bdist_wheel for python-apt ... error [...] running build_i18n intltool-update -p -g python-apt unable to execute 'intltool-update': No such file or directory error: command 'intltool-update' failed with exit status 1 ---------------------------------------- Failed building wheel for python-apt Running setup.py clean for python-apt Running setup.py bdist_wheel for python-distutils-extra ... done Stored in directory: /tmp/tmp4in0p1di Successfully built snapcraft python-distutils-extra Failed to build python-apt ERROR: Failed to build one or more wheels [...] subprocess.CalledProcessError: Command '['/bin/sh', '/tmp/tmp9ue9lv4j', '/root/build_snapcraft/stage/usr/bin/python3', '-m', 'pip', 'wheel', '--disable-pip-version-check', '--no-index', '--find-links', '/root/build_snapcraft/parts/snapcraft/packages', '--wheel-dir', '/tmp/tmp4in0p1di', '--requirement', '/root/build_snapcraft/parts/snapcraft/src/requirements.txt', '.']' returned non-zero exit status 1 The "snapcraft" part is using Python and installs python-apt from a tarball via requirements.txt.