diff --git a/bin/omarchy-pkg-add b/bin/omarchy-pkg-add
index 1f5e4091..887499ee 100755
--- a/bin/omarchy-pkg-add
+++ b/bin/omarchy-pkg-add
@@ -5,11 +5,17 @@
 # omarchy:examples=omarchy pkg add jq ripgrep
 # omarchy:requires-sudo=true
 
-if omarchy-pkg-missing "$@"; then
+# Only the missing ones: an installed package from no repository is a "target not found" to pacman -S.
+missing=()
+for pkg in "$@"; do
+  omarchy-pkg-missing "$pkg" && missing+=("$pkg")
+done
+
+if (( ${#missing[@]} > 0 )); then
   if (( EUID == 0 )); then
-    pacman -S --noconfirm --needed -- "$@" || exit 1
+    pacman -S --noconfirm --needed -- "${missing[@]}" || exit 1
   else
-    sudo pacman -S --noconfirm --needed -- "$@" || exit 1
+    sudo pacman -S --noconfirm --needed -- "${missing[@]}" || exit 1
   fi
 fi
 
diff --git a/test/shell.d/pkg-add-test.sh b/test/shell.d/pkg-add-test.sh
new file mode 100644
index 00000000..660c4ef7
--- /dev/null
+++ b/test/shell.d/pkg-add-test.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+test_tmp=$(mktemp -d)
+trap 'rm -rf "$test_tmp"' EXIT
+
+mock_path="$test_tmp/bin"
+mkdir -p "$mock_path"
+cat >"$mock_path/pacman" <<'MOCK'
+#!/bin/bash
+if [[ $1 == "-Q" ]]; then
+  [[ " $TEST_INSTALLED " == *" $3 "* ]]
+  exit
+fi
+printf '%s\n' "$*" >>"$TEST_TMP/pacman-sync"
+for arg in "$@"; do
+  [[ $arg == -* ]] || TEST_INSTALLED+=" $arg"
+done
+printf '%s\n' "$TEST_INSTALLED" >"$TEST_TMP/installed"
+MOCK
+cat >"$mock_path/sudo" <<'MOCK'
+#!/bin/bash
+exec "$@"
+MOCK
+chmod +x "$mock_path"/*
+export PATH="$mock_path:$ROOT/bin:$PATH" TEST_TMP="$test_tmp"
+
+TEST_INSTALLED="local-only fcitx5" "$ROOT/bin/omarchy-pkg-add" fcitx5-rime local-only opencc >/dev/null 2>&1 || true
+[[ $(<"$test_tmp/pacman-sync") == "-S --noconfirm --needed -- fcitx5-rime opencc" ]] ||
+  fail "pkg-add asks pacman only for the missing packages" "$(<"$test_tmp/pacman-sync")"
+pass "an installed package from no repository is left out of the pacman -S call"
+
+rm -f "$test_tmp/pacman-sync"
+TEST_INSTALLED="local-only fcitx5" "$ROOT/bin/omarchy-pkg-add" local-only fcitx5
+[[ ! -e $test_tmp/pacman-sync ]] || fail "pkg-add runs no transaction when nothing is missing" "$(<"$test_tmp/pacman-sync")"
+pass "pkg-add runs no transaction when everything is installed"