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From: taylanbayirli@gmail.com (Taylan Ulrich =?utf-8?Q?Bay=C4=B1rl=C4=B1?=
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Subject: Re: Using 'system*' instead of 'system' in 'guix environment'
Date: Thu, 08 Oct 2015 17:09:37 +0200
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	(David Thompson's message of "Thu, 8 Oct 2015 08:41:17 -0400")
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To: "Thompson, David" <dthompson2@worcester.edu>
Cc: guix-devel <guix-devel@gnu.org>

"Thompson, David" <dthompson2@worcester.edu> writes:

> guix environment --ad-hoc guile -- sh -c "cd bar/; guile -c '(frob)'"

AFAIUI that's equivalent to

  guix environment --ad-hoc guile -E "cd bar/; guile -c '(frob)'"

(Or was the intent to deprecate -E?)

Therefore I'd agree that doing no string join in the '--' case is good,
since the string joining variant is already covered, for convenience, by
the '-E' variant.

However, the '(or (container-shell) "/bin/sh")' thing could be done for
the '-E' variant, no?

So we'd have the pure system* variant with '--', and the string joining
variant with '-E' which might pass the joined string to sh or to some
other shell.  (Though those shells will need to agree on the '-c' bit.)


Taylan