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doc: Mention .bashrc vs. .bash_profile for 'guix environment'. 

* doc/guix.texi (Invoking guix environment): Add footnote about .bashrc
  vs. .bash_profile.
master
Ludovic Courtès 2015-07-01 14:01:02 +02:00
parent d70389c423
commit 50500f7cf0
1 changed files with 9 additions and 1 deletions
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@ -4136,7 +4136,15 @@ version of the environment that @command{guix environment} was run in.
It contains the necessary search paths for building the given package
added to the existing environment variables. To create a ``pure''
environment in which the original environment variables have been unset,
use the @code{--pure} option.
use the @code{--pure} option@footnote{Users sometimes wrongfully augment
environment variables such as @code{PATH} in their @file{~/.bashrc}
file. As a consequence, when @code{guix environment} launches it, Bash
may read @file{~/.bashrc}, thereby introducing ``impurities'' in these
environment variables. It is an error to define such environment
variables in @file{.bashrc}; instead, they should be defined in
@file{.bash_profile}, which is sourced only by log-in shells.
@xref{Bash Startup Files,,, bash, The GNU Bash Reference Manual}, for
details on Bash start-up files.}.
Additionally, more than one package may be specified, in which case the
union of the inputs for the given packages are used. For example, the