Fixing macOS Travis setup - #2504
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davidalber
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Mar 2, 2018
| virtualenv env -p python3 && | ||
| virtualenv env && | ||
| source env/bin/activate && | ||
| python --version && |
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I added this so that we can see in the logs which version of Python is being used. We could take it out, but I'm curious to see if it flips to Python 3 in the coming days. It's currently "Python 2.7.14".
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frol
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The solution is backported from rustfmt: * rust-lang/rustfmt#2229 * rust-lang/rustfmt#2504
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The solution is backported from rustfmt: * rust-lang/rustfmt#2229 * rust-lang/rustfmt#2504
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The macOS Travis build is broken. I believe the cause is Homebrew changed the
pythonformula to be Python 3. Thus, when we try tobrew install python3we are really trying install thepythontarget, which is already (currently) Python 2 in the Travis image.I first tried fixing this by upgrading the
pythonformula. This added a lot of time to the build, and wasn't quite working before I realized thattravis-cargodoes not care whether it's executing in a Python 2 or Python 3 interpreter. Thus, I just dropped the whole "try to get a Python 3 virtual environment" angle. Currently, this is running using Python 2, but I suspect that Travis will update the image sometime and it will then by Python 3.