Rebuild test-runtime if substrate
binary is updated
#362
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Prior to this, one could update the substrate binary on their PATH, and the test-runtime would not rebuild in response to this, leading to a potentially out of date runtime being used (the fix was to tweak
test-runtime/build.rs
to force a rebuild).This resolves the path to the substrate binary and tells cargo to keep an eye on that, too.
Tested by
touch
ing the substrate binary in use, which then caused a rebuild (and otherwise it would not rebuild).Closes #358