guix-install.sh: Make /etc/profile.d/zzz-guix.sh usable in set -u shells

* etc/guix-install.sh: Replace $INFOPATH, $MANPATH with ${V:-} variant.

Closes: guix/guix#4534
Change-Id: I82da28d1347b1f37862b903f1721d9bdbb78acd2
Signed-off-by: Rutherther <rutherther@ditigal.xyz>
Merges: #4553
This commit is contained in:
Simon Josefsson 2025-11-29 17:09:14 +01:00 committed by Rutherther
parent 0e4fd181d9
commit 79cf0fb7a3
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@ -793,8 +793,8 @@ export PATH="$GUIX_PROFILE/bin${PATH:+:}$PATH"
# info and man readers. When INFOPATH is unset, add a trailing colon so Emacs
# searches 'Info-default-directory-list'. When MANPATH is unset, add a
# trailing colon so the system default search path is used.
export INFOPATH="$GUIX_PROFILE/share/info:$INFOPATH"
export MANPATH="$GUIX_PROFILE/share/man:$MANPATH"
export INFOPATH="$GUIX_PROFILE/share/info:${INFOPATH:-}"
export MANPATH="$GUIX_PROFILE/share/man:${MANPATH:-}"
# User's default profile, if it exists
GUIX_PROFILE="$HOME/.guix-profile"