From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: [PATCH] scripts: Add 'environment' command.
Date: Sat, 11 Oct 2014 23:52:38 +0200
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	(David Thompson's message of "Sat, 11 Oct 2014 08:27:06 -0400")
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To: David Thompson <dthompson2@worcester.edu>
Cc: guix-devel@gnu.org

David Thompson <dthompson2@worcester.edu> skribis:

> I don't think it's something "wrong" with your files, really, but it is
> incompatible with the way 'guix environment' currently operates.
>
> I took another look at nix-build to see how they do things.  They create
> a bashrc file in a temporary directory and run bash (or whatever
> $NIX_BUILD_SHELL is) with the '--rcfile' flag so that the user's bashrc
> isn't used.  We could do something similar, but right now I don't have
> any reason to believe that all shells accept an '--rcfile' option, so it
> could easily break other setups.

POSIX specifies the =E2=80=98ENV=E2=80=99 environment variable for that:

  http://pubs.opengroup.org/onlinepubs/9699919799/utilities/sh.html

So that=E2=80=99s one thing that could be used.  Apparently Bash checks
=E2=80=98BASH_ENV=E2=80=99 instead, unless invoked as =E2=80=98sh=E2=80=99 =
(info "(bash) Bash Startup
Files").

In the longer run, another option would be to have a Bash built-in
command, in the form of a plug-in loaded with =E2=80=98enable FOO.so=E2=80=
=99, that
would modify the environment variables of the running Bash process
(recutils has an example of that.)

My 2=C2=A2,
Ludo=E2=80=99.