Gracefully handle missing dependencies.
authorwhitequark <whitequark@whitequark.org>
Wed, 1 Jul 2020 07:00:02 +0000 (07:00 +0000)
committerwhitequark <whitequark@whitequark.org>
Wed, 1 Jul 2020 07:00:02 +0000 (07:00 +0000)
commit126f0be731ab008657ca1c4fc05ce7cc6e355169
treec6675d6374ccedbc5b9149fe7f2546badb302b91
parentf5670a9b719a2c240949df853b5425ceea8244d0
Gracefully handle missing dependencies.

Some people's workflows involve not using `pip`. This is not
a recommended way to use nMigen, but is prevalent enough for good
enough reason that we try to keep them working anyway.
nmigen/__init__.py
nmigen/_yosys.py