1 files changed, 9 insertions, 4 deletions
diff --git a/install.sh b/install.sh
index a16d8a6..4b19d53 100755
--- a/install.sh
+++ b/install.sh
@@ -2,16 +2,21 @@
 #
 set -euxo pipefail
 #
-[[ -z "$1" ]] && echo "usage: install.sh <file.nix>" && exit 1
+[[ -z "$1" ]] \
+    && echo "usage: install.sh <file.nix>" \
+    && echo "where <file.nix> is something from the 'profiles' directory" \
+    && exit 1
 #
 mkdir -p ~/.config/nixpkgs
 NIXDIR="$HOME/.config/nixpkgs"
 HOMEFILE="$NIXDIR/home.nix"
 NIXFILE="$(pwd)/$1"
 #
-#
-[[ -e "$HOMEFILE" ]] || ln -s "$NIXFILE" "$HOMEFILE"
-[[ -e "$NIXDIR/config.nix" ]] || ln -s "$(pwd)/lib/config.nix" "$NIXDIR/config.nix"
+# start from scratch
+rm "$HOMEFILE"
+ln -s "$NIXFILE" "$HOMEFILE"
+rm "$NIXDIR/config.nix"
+ln -s "$(pwd)/lib/config.nix" "$NIXDIR/config.nix"
 #
 # the notmuch config location is by default ~/.notmuch-config, but home-manager
 # puts it at ~/.config/notmuch/notmuchrc (which makes sense) and then sets