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doc: Explain how to switch profile from empty shell in "Profiles in Practice".

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* doc/guix-cookbook.texi (Profiles in Practice): Add example.
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Pierre Neidhardt 2019-10-30 09:33:53 +01:00
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@ -1774,6 +1774,14 @@ You can roll-back to any generation of a given profile:
guix package -p "$GUIX_EXTRA_PROFILES"/my-project/my-project --switch-generations=17 guix package -p "$GUIX_EXTRA_PROFILES"/my-project/my-project --switch-generations=17
@end example @end example
Finally, if you want to switch to a profile without inheriting from the
current environment, you can activate it from an empty shell:
@example
env -i $(which bash) --login --noprofile --norc
. my-project/etc/profile
@end example
@node Required packages @node Required packages
@subsection Required packages @subsection Required packages