1 files changed, 53 insertions, 1 deletions
diff --git a/just-lib.sh b/just-lib.sh
index 2392709..47cceb3 100644
--- a/just-lib.sh
+++ b/just-lib.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # shellcheck shell=bash
-# Shared helpers for the fmt / check-fmt / lint just recipes.
+# Shared helpers for just recipes.
 # Sourced from justfile recipe bodies; not standalone.
 
 _need() {
@@ -39,3 +39,55 @@ _is_zsh() {
 _is_shellscript() {
   head -1 "$1" 2>/dev/null | grep -qE '^#!.*\b(ba)?sh\b'
 }
+
+_flatpak_install_declared() {
+  [ -f meta/flatpak.txt ] || return 0
+  flatpak remote-add --if-not-exists --user flathub \
+    https://dl.flathub.org/repo/flathub.flatpakrepo >/dev/null
+  flathub_ids=$(awk '!/^[[:space:]]*(#|$)/ && NF==1 {print $1}' meta/flatpak.txt)
+  if [ -n "$flathub_ids" ]; then
+    # shellcheck disable=SC2086
+    flatpak install --user -y --noninteractive flathub $flathub_ids
+  fi
+  installed=$(flatpak list --user --app --columns=application 2>/dev/null || true)
+  awk '!/^[[:space:]]*(#|$)/ && NF>=2 {print $1, $2}' meta/flatpak.txt |
+    while read -r id url; do
+      if printf '%s\n' "$installed" | grep -qxF "$id"; then
+        continue
+      fi
+      echo ">>> downloading $id from $url"
+      tmp=$(mktemp --suffix=.flatpak)
+      curl -fsSL -o "$tmp" "$url"
+      flatpak install --user -y --noninteractive "$tmp"
+      rm -f "$tmp"
+    done
+}
+
+_active_pacman_packages() {
+  for file in meta/*.txt; do
+    [ "$(basename "$file")" = "flatpak.txt" ] && continue
+    pkgs=$(sed -E 's/[[:space:]]*#.*$//; /^[[:space:]]*$/d' "$file")
+    total=$(echo "$pkgs" | wc -l)
+    installed=0
+    for pkg in $pkgs; do
+      pacman -Qi "$pkg" >/dev/null 2>&1 && installed=$((installed + 1))
+    done
+    if [ $((installed * 2)) -ge "$total" ]; then
+      echo "$pkgs"
+    fi
+  done | sort -u
+}
+
+_undeclared_packages() {
+  active=$(_active_pacman_packages)
+  pacman -Qqe | while read -r pkg; do
+    echo "$active" | grep -qxF "$pkg" || echo "$pkg"
+  done
+  if [ -f meta/flatpak.txt ]; then
+    declared=$(awk '!/^[[:space:]]*(#|$)/ {print $1}' meta/flatpak.txt)
+    flatpak list --user --app --columns=application 2>/dev/null | while read -r id; do
+      [ -z "$id" ] && continue
+      echo "$declared" | grep -qxF "$id" || echo "flatpak: $id"
+    done
+  fi
+}