Qiskit / qiskit / 8419594353

Build # 8419594353

Build Type

push

github

Committed by web-flow

Commit Message

Improve mesage on failed Graphviz optional (#11896) (#12072)

* Improve mesage on failed Graphviz optional

I have recently seen several users struggle to install a complete
version of Graphviz upon seeing the `MissingOptionalLibraryError`
message.  This updates the message to make it clearer that the PyPI
distribution `graphviz` *is not* the actual Graphviz software, and it
must be installed separately.

* Tweak message

(cherry picked from commit 17949dc22)

Co-authored-by: Jake Lishman <jake.lishman@ibm.com>

Run Details

58888 of 65951 relevant lines covered (89.29%)

177374.62 hits per line

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