[Reproducible-builds] Bug#818067: ncurses: Please make ncurses reproducible

[Niels Thykier]

Source: ncurses
Severity: wishlist
Tags: patch

Hi,

While working on the “reproducible builds” effort [1], we have noticed
that ncurses could not be built reproducibly.

We have found that MKterminfo.sh included a trailing space in one
build test but not in the other.  It is not quite clear to me what
triggers this behaviour, but there is a note claiming it to be the
locale difference (one build is in C and the other in a French UTF-8
locale).

The attached patch makes MKterminfo.sh strip trailing spaces from the
CAP file, which removes a source of non-determinism.  Once applied,
ncurses can be built reproducibly in our current experimental
framework.

 [1]: https://wiki.debian.org/ReproducibleBuilds

Thanks,
~Niels
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