diff --git a/DEV-DEPENDENCIES.sh b/DEV-DEPENDENCIES.sh
index 8112a815..13299117 100755
--- a/DEV-DEPENDENCIES.sh
+++ b/DEV-DEPENDENCIES.sh
@@ -2,11 +2,13 @@
 set -e
 
 if [ "$EUID" -ne 0 ]; then
-    echo "Run as root (use sudo)"
-    exit 1
+echo "Run as root (use sudo)"
+exit 1
 fi
 
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SUDO_USER_HOME="$(eval echo "~${SUDO_USER:-$USER}")"
+
 echo "Installing runtime dependencies first..."
 bash "$SCRIPT_DIR/DEPENDENCIES.sh"
 
@@ -14,41 +16,60 @@ echo "Installing dev/build dependencies..."
 OS=$(grep -oP '(?<=^ID=).+' /etc/os-release 2>/dev/null | tr -d '"' || echo "unknown")
 
 install_debian() {
-    apt-get install -y -qq \
-        clang lld build-essential pkg-config libssl-dev libpq-dev cmake git \
-        libglib2.0-dev libgtk-3-dev libwebkit2gtk-4.1-dev libjavascriptcoregtk-4.1-dev \
-        libayatana-appindicator3-dev librsvg2-dev libsoup-3.0-dev
+apt-get install -y -qq \
+    clang lld mold build-essential pkg-config libssl-dev libpq-dev cmake git \
+    libglib2.0-dev libgtk-3-dev libwebkit2gtk-4.1-dev libjavascriptcoregtk-4.1-dev \
+    libayatana-appindicator3-dev librsvg2-dev libsoup-3.0-dev
 }
 
 install_fedora() {
-    dnf install -y -q \
-        clang lld gcc gcc-c++ make pkg-config openssl-devel postgresql-devel cmake git \
-        glib2-devel gobject-introspection-devel gtk3-devel webkit2gtk3-devel \
-        javascriptcoregtk-devel libappindicator-gtk3-devel librsvg2-devel libsoup3-devel
+dnf install -y -q \
+    clang lld mold gcc gcc-c++ make pkg-config openssl-devel postgresql-devel cmake git \
+glib2-devel gobject-introspection-devel gtk3-devel webkit2gtk3-devel \
+javascriptcoregtk-devel libappindicator-gtk3-devel librsvg2-devel libsoup3-devel
 }
 
 install_arch() {
-    pacman -Sy --noconfirm \
-        clang lld gcc make pkg-config openssl libpq cmake git \
-        glib2 gtk3 webkit2gtk4 javascriptcoregtk libappindicator librsvg libsoup
+pacman -Sy --noconfirm \
+    clang lld mold gcc make pkg-config openssl libpq cmake git \
+glib2 gtk3 webkit2gtk4 javascriptcoregtk libappindicator librsvg libsoup
 }
 
 case $OS in
-    ubuntu|debian|linuxmint|pop) install_debian ;;
-    fedora|rhel|centos|rocky|almalinux) install_fedora ;;
-    arch|manjaro) install_arch ;;
-    *) echo "Unsupported OS: $OS"; exit 1 ;;
+ubuntu|debian|linuxmint|pop) install_debian ;;
+fedora|rhel|centos|rocky|almalinux) install_fedora ;;
+arch|manjaro) install_arch ;;
+*) echo "Unsupported OS: $OS"; exit 1 ;;
 esac
 
-install_cargo_tools() {
-    CARGO_BIN="${HOME}/.cargo/bin"
-    if [ -f "$CARGO_BIN/cargo" ]; then
-        export PATH="$CARGO_BIN:$PATH"
-        . "$CARGO_BIN/env" 2>/dev/null
-        cargo install mold --locked 2>/dev/null || true
-    fi
+run_as_user() {
+su - "${SUDO_USER:-$USER}" -c ". '${SUDO_USER_HOME}/.cargo/env' 2>/dev/null; export PATH=\"${SUDO_USER_HOME}/.cargo/bin:\$PATH\"; $*"
 }
 
-command -v mold &> /dev/null || install_cargo_tools
+install_rust() {
+if ! run_as_user "rustc --version" &>/dev/null; then
+echo "Installing Rust via rustup for ${SUDO_USER:-$USER}..."
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
+su - "${SUDO_USER:-$USER}" -c "sh -s -- -y --default-toolchain stable"
+run_as_user "rustup default stable"
+echo "Rust installed: $(run_as_user 'rustc --version') / $(run_as_user 'cargo --version')"
+else
+echo "Rust already installed: $(run_as_user 'rustc --version')"
+fi
+}
 
-echo "Dev dependencies installed!"
\ No newline at end of file
+install_cargo_tools() {
+if run_as_user "cargo --version" &>/dev/null; then
+if ! run_as_user "sccache --version" &>/dev/null; then
+echo "Installing sccache..."
+run_as_user "cargo install sccache --locked"
+else
+echo "sccache already installed: $(run_as_user 'sccache --version 2>&1 | head -1')"
+fi
+fi
+}
+
+install_rust "$SUDO_USER_HOME"
+install_cargo_tools "$SUDO_USER_HOME"
+
+echo "Dev dependencies installed!"