From: "Zack Weinberg" <zack@owlfolio.org>
To: help-guix@gnu.org
Subject: Is there any way to change what /bin/sh is inside `guix shell [--container]` ?
Date: Mon, 13 Mar 2023 16:16:41 -0400 [thread overview]
Message-ID: <87ac5c3b-d275-496a-a84d-dcda520a6499@app.fastmail.com> (raw)
I'm doing experiments with using `guix shell --container` for isolated, reproducible build environments. I've noticed that no matter how I set up the container, `/bin/sh` points to a full-fat bash, even if the full bash package was not included in the container profile. For instance
```
guix shell --container bash-minimal coreutils -- sh -c 'ls -l $(command -v sh) /bin/sh'
lrwxrwxrwx 1 zack users 61 Mar 13 20:07 /bin/sh -> /gnu/store/d99ykvj3axzzidygsmdmzxah4lvxd6hw-bash-5.1.8/bin/sh
lrwxrwxrwx 1 65534 overflow 69 Jan 1 1970 /gnu/store/jc86p6d0i5b3aly5lx5lhb1xa35f2xk8-profile/bin/sh -> /gnu/store/chfwin3a4qp1znnpsjbmydr2jbzk0d6y-bash-minimal-5.1.8/bin/sh
$ guix shell --container busybox -- sh -c 'ls -l $(command -v sh) /bin/sh'
lrwxrwxrwx 1 65534 overflow 7 Jan 1 1970 /gnu/store/96l76flyg617l23c5p32ysjbc72ywjgd-profile/bin/sh -> busybox
lrwxrwxrwx 1 zack users 61 Mar 13 20:05 /bin/sh -> /gnu/store/d99ykvj3axzzidygsmdmzxah4lvxd6hw-bash-5.1.8/bin/sh
```
Is there any way to change or override this behavior? What I want is for /bin/sh inside the container to be the same as $GUIX_ENVIRONMENT/bin/sh inside the container.
(If you're about to ask me, "but what if the container profile doesn't include a shell at all?", my response will be "in that case /bin/sh should not exist!" I can think of several reasons why I might do that on purpose. Yes, I realize that system(3) won't work in such an environment -- that may in fact be (one of the) goals.)
zw
next reply other threads:[~2023-03-13 20:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-13 20:16 Zack Weinberg [this message]
2023-03-16 15:50 ` Is there any way to change what /bin/sh is inside `guix shell [--container]` ? Ludovic Courtès
2023-03-20 15:14 ` Zack Weinberg
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