made init hooks script idemptent

dot_scripts/executable_distrobox-dev-init.sh

@@ -34,6 +34,7 @@ EOF
 export RUSTUP_HOME=/opt/rustup
 export CARGO_HOME=/opt/cargo
 
+if [[ ! -x /opt/cargo/bin/rustup ]]; then
     echo "Installing rustup..."
 
     curl \
@@ -42,6 +43,9 @@ curl \
         -sSf \
         https://sh.rustup.rs \
         | sh -s -- -y --no-modify-path
+else
+    echo "rustup is already installed."
+fi
 
 # Rust toolchain
 echo "Installing stable Rust toolchain..."
@@ -58,10 +62,24 @@ echo "Installing rustup Fish completion..."
 # -----------------------------------------------------------------------------
 # Aseprite
 # -----------------------------------------------------------------------------
-echo "Building Aseprite..."
+if [[ -f /opt/aseprite/aseprite.desktop ]]; then
+    echo "Aseprite desktop entry already exists; skipping installation."
+else
+    if [[ ! -d /opt/aseprite ]]; then
+        echo "Cloning Aseprite..."
         git clone --recursive https://github.com/aseprite/aseprite.git /opt/aseprite
+    else
+        echo "Aseprite source already exists."
+    fi
+
     cd /opt/aseprite
+    if [[ ! -x /opt/aseprite/build/bin/aseprite ]]; then
+        git submodule update --init --recursive
+        echo "Building Aseprite..."
         ./build.sh --auto --norun
+    else
+        echo "Aseprite is already built."
+    fi
 
     echo "Creating Aseprite desktop entry..."
     cat > /opt/aseprite/aseprite.desktop <<'EOF'
@@ -74,9 +92,16 @@ Terminal=false
 Type=Application
 Categories=Graphics;2DGraphics;
 EOF
+fi
 
+if sudo -u "$DEV_USER" env HOME="$DEV_HOME" distrobox-export --list-apps 2>/dev/null |
+    grep -Fq "aseprite"
+then
+    echo "Aseprite desktop entry is already exported."
+else
     echo "Exporting Aseprite desktop entry..."
     sudo -u "$DEV_USER" env HOME="$DEV_HOME" distrobox-export --app /opt/aseprite/aseprite.desktop
+fi
 
 # -----------------------------------------------------------------------------
 # Export development tools to the host
@@ -87,15 +112,31 @@ echo "Exporting development tools..."
 export_bin() {
     local binary="$1"
 
-    if command -v "$binary" >/dev/null 2>&1; then
+    if ! command -v "$binary" >/dev/null 2>&1; then
+        echo "  warning: $binary not found"
+    elif sudo -u "$DEV_USER" env HOME="$DEV_HOME" \
+        distrobox-export \
+            --list-binaries \
+            --export-path "$DEV_HOME/.local/bin" 2>/dev/null |
+        awk -F'|' -v binary="$binary" '
+            {
+                name = $1
+                gsub(/^[[:space:]]+|[[:space:]]+$/, "", name)
+                if (name == binary) {
+                    found = 1
+                }
+            }
+            END { exit !found }
+        '
+    then
+        echo "  $binary is already exported."
+    else
         echo "  exporting $binary"
         sudo -u "$DEV_USER" \
             env HOME="$DEV_HOME" \
             distrobox-export \
                 --bin "$(command -v "$binary")" \
                 --export-path "$DEV_HOME/.local/bin"
-    else
-        echo "  warning: $binary not found"
     fi
 }