No dot graphs in deb installation of DVC #3267
Description
If I run dvc pipeline show --dot with the deb installation of DVC I get the following error:
$ dvc pipeline show -v --dot my_pipeline.dvc
ERROR: unexpected error - No module named 'pydot'
------------------------------------------------------------
Traceback (most recent call last):
File "dvc/main.py", line 48, in main
File "dvc/command/pipeline.py", line 130, in run
File "dvc/command/pipeline.py", line 115, in __write_dot
File "</usr/lib/dvc/decorator.pyc:decorator-gen-674>", line 2, in write_dot
File "site-packages/networkx/utils/decorators.py", line 240, in _open_file
File "site-packages/networkx/drawing/nx_pydot.py", line 46, in write_dot
File "site-packages/networkx/drawing/nx_pydot.py", line 191, in to_pydot
File "site-packages/networkx/drawing/nx_pydot.py", line 367, in _import_pydot
ModuleNotFoundError: No module named 'pydot'
------------------------------------------------------------
Having any troubles? Hit us up at https://dvc.org/support, we are always happy to help!
I tried many combinations of installing pydot and graphviz via conda, pip and apt, but all lead to the error above.
Dot graph generation works when DVC (and pydot) is installed via conda.
Please provide information about your setup
DVC version: 0.82.2
Python version: 3.7.1
Platform: Linux-4.15.0-74-generic-x86_64-with-debian-buster-sid
Binary: True
Package: deb
Cache: reflink - not supported, hardlink - supported, symlink - supported
Filesystem type (cache directory): ('xfs', '/dev/mapper/vg_sdb-lv_sdb')
Filesystem type (workspace): ('xfs', '/dev/mapper/vg_sdb-lv_sdb')