Re: [isabelle] Isabelleʼs getsettings somehow broken

On Wed, 10 Feb 2016, Joachim Breitner wrote:

One way out might be to follow the advice that I procured here: This way, you can avoid the call to /bin/sh in the problematic part src/Pure/Concurrent/bash.ML. Iâm not sure if this is available on Windows.

In the last 10 years I have rewritten equivalents of OS.Process.system on ML and JVM several times, for all platforms. In Isabelle2016 we have native Windows for Poly/ML, which gives more liberty next time -- if and when SML/NJ is also discontinued. I once had a plain Unix fork/exec in ML with /bin/bash that never went into the repository, because it was not portable enough.

An alternative is to modify Poly/ML to use /bin/bash or getenv(SHELL) instead of hardwired /bin/sh -- that would be a typical Debianistic patch.

Right now I am trying to get a feel about the actual impact of /bin/sh -> /bin/dash in Linux distributions apart from Debian + Ubuntu.

How fast will Debian-testing move forward towards production releases? So far my stable Ubuntu 15.10 looks still fine.


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