Unable to build/install persistent 4.5.0 on Debian 9 about persistent HOT 7 CLOSED

I've seen something very vaguely like that before. Does your system mount /tmp without executable permissions (noexec)? If so, if you use a different temporary directory or mount with executable permissions, does it fix the error? Alternately, you may be able to ensure CFFI is installed before building the wheel (so it isn't put in the temporary directory).

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Good observation.

/tmp is mounted without noexec

Setting TMPDIR or installing cffi manually before persistent works also.

Is this a regression or a feature of 4.5.0? As said: 4.4.3 as working in the same environment.

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AFAICT 4.4.3 did not require cffi.

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AFAICT 4.4.3 did not require cffi.

True. It had been an optional dependency for some time, but the (slow) fallback code was removed in #107.

Very often the binary wheels would mitigate this, but there’s #113 (which I haven’t gotten around to addressing yet. )

One could also argue that there’s an underlying pip bug...

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persistent 4.6.0+ has linux wheels (aka #113 is solved now). Can this issue be closed, too?

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The problem persists with 4.6.1. I still need to set TMPDIR to a local filesystem.

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AFAIU this is a problem with CFFI in general, and not specific to persistent?

Has anybody reported it to CFFI's own bug tracker?

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