#11021: Fix "sage -info" and a bug when sourcing sage-env more than once
--------------------------------------------------------+-------------------
Reporter: jhpalmieri | Owner: leif
Type: defect | Status:
needs_review
Priority: major | Milestone:
sage-4.7.1
Component: packages | Keywords:
SPKG.txt SAGE.txt -info BUILD sage-env sage-sage sage-spkg
Work_issues: | Upstream: N/A
Reviewer: Kelvin Li, Leif Leonhardy, John Palmieri | Author: Leif
Leonhardy, Kelvin Li
Merged: | Dependencies:
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Comment(by leif):
Replying to [comment:38 jhpalmieri]:
> > MacOS... What does cat /dev/null | tar tf - give?
>
{{{
#!sh
$ cat /dev/null | tar tf -
$ echo $?
0
}}}
That's odd. IIRC we require '''GNU''' `tar`, which behaves correctly:
{{{
#!sh
$ cat /dev/null | tar tf -
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors
}}}
Maybe we can work around in a dumb way (which I'd still prefer over using
`pipestatus` ''there'') by doing
{{{
#!sh
(bunzip2 -c "$PKG_SRC" || echo foo) | tar tf -
}}}
which should fail in any case if `bunzip2` fails.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11021#comment:39>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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