diff --git a/build-package.sh b/build-package.sh
index 0efc83461..92e9a2294 100755
--- a/build-package.sh
+++ b/build-package.sh
@@ -273,7 +273,10 @@ source "$TERMUX_SCRIPTDIR/scripts/build/termux_step_finish_build.sh"
 if [ "$TERMUX_ON_DEVICE_BUILD" = "true" ]; then
 	# For on device builds cross compiling is not supported.
 	# Target architecture must be same as for environment used currently.
-	TERMUX_ARCH=$(dpkg --print-architecture 2>/dev/null || pacman-conf | grep Architecture | sed 's/Architecture = //g')
+	case "$TERMUX_MAIN_PACKAGE_FORMAT" in
+		"debian") TERMUX_ARCH=$(dpkg --print-architecture);;
+		"pacman") TERMUX_ARCH=$(pacman-conf | grep Architecture | sed 's/Architecture = //g');;
+	esac
 	export TERMUX_ARCH
 fi
 
diff --git a/scripts/build/setup/termux_setup_cmake.sh b/scripts/build/setup/termux_setup_cmake.sh
index 526b50158..d47c4d245 100644
--- a/scripts/build/setup/termux_setup_cmake.sh
+++ b/scripts/build/setup/termux_setup_cmake.sh
@@ -25,8 +25,8 @@ termux_setup_cmake() {
 
 		export PATH=$TERMUX_CMAKE_FOLDER/bin:$PATH
 	else
-		if [[ "$(dpkg --version 2>/dev/null)" && "$(dpkg-query -W -f '${db:Status-Status}\n' cmake 2>/dev/null)" != "installed" ]] ||
-                   [[ "$(pacman -V 2>/dev/null)" && ! "$(pacman -Q cmake 2>/dev/null)" ]]; then
+		if [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" && "$(dpkg-query -W -f '${db:Status-Status}\n' cmake 2>/dev/null)" != "installed" ]] ||
+                   [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" && ! "$(pacman -Q cmake 2>/dev/null)" ]]; then
 			echo "Package 'cmake' is not installed."
 			echo "You can install it with"
 			echo
diff --git a/scripts/build/setup/termux_setup_ghc.sh b/scripts/build/setup/termux_setup_ghc.sh
index 28819eb88..2490489d4 100644
--- a/scripts/build/setup/termux_setup_ghc.sh
+++ b/scripts/build/setup/termux_setup_ghc.sh
@@ -32,8 +32,8 @@ termux_setup_ghc() {
 
 		rm -Rf "$TERMUX_GHC_TEMP_FOLDER"
 	else
-		if [[ "$(dpkg --version 2>/dev/null)" && "$(dpkg-query -W -f '${db:Status-Status}\n' ghc 2>/dev/null)" != "installed" ]] ||
-                   [[ "$(pacman -V 2>/dev/null)" && ! "$(pacman -Q ghc 2>/dev/null)" ]]; then
+		if [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" && "$(dpkg-query -W -f '${db:Status-Status}\n' ghc 2>/dev/null)" != "installed" ]] ||
+                   [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" && ! "$(pacman -Q ghc 2>/dev/null)" ]]; then
 			echo "Package 'ghc' is not installed."
 			exit 1
 		fi
diff --git a/scripts/build/setup/termux_setup_gn.sh b/scripts/build/setup/termux_setup_gn.sh
index d88dd3b96..4a97fff53 100644
--- a/scripts/build/setup/termux_setup_gn.sh
+++ b/scripts/build/setup/termux_setup_gn.sh
@@ -40,8 +40,8 @@ termux_setup_gn() {
 		fi
 		export PATH=$GN_FOLDER/out:$PATH
 	else
-		if [[ "$(dpkg --version 2>/dev/null)" && "$(dpkg-query -W -f '${db:Status-Status}\n' gn 2>/dev/null)" != "installed" ]] ||
-                   [[ "$(pacman -V 2>/dev/null)" && ! "$(pacman -Q gn 2>/dev/null)" ]]; then
+		if [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" && "$(dpkg-query -W -f '${db:Status-Status}\n' gn 2>/dev/null)" != "installed" ]] ||
+                   [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" && ! "$(pacman -Q gn 2>/dev/null)" ]]; then
 			echo "Package 'gn' is not installed."
 			echo "You can install it with"
 			echo
diff --git a/scripts/build/setup/termux_setup_golang.sh b/scripts/build/setup/termux_setup_golang.sh
index 2226d4d66..652d0ecc1 100644
--- a/scripts/build/setup/termux_setup_golang.sh
+++ b/scripts/build/setup/termux_setup_golang.sh
@@ -24,8 +24,8 @@ termux_setup_golang() {
 
 		( cd "$TERMUX_COMMON_CACHEDIR"; tar xf "$TERMUX_BUILDGO_TAR"; mv go "$TERMUX_BUILDGO_FOLDER"; rm "$TERMUX_BUILDGO_TAR" )
 	else
-		if [[ "$(dpkg --version 2>/dev/null)" && "$(dpkg-query -W -f '${db:Status-Status}\n' golang 2>/dev/null)" != "installed" ]] ||
-                   [[ "$(pacman -V 2>/dev/null)" && ! "$(pacman -Q golang 2>/dev/null)" ]]; then
+		if [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" && "$(dpkg-query -W -f '${db:Status-Status}\n' golang 2>/dev/null)" != "installed" ]] ||
+                   [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" && ! "$(pacman -Q golang 2>/dev/null)" ]]; then
 			echo "Package 'golang' is not installed."
 			echo "You can install it with"
 			echo
diff --git a/scripts/build/setup/termux_setup_ninja.sh b/scripts/build/setup/termux_setup_ninja.sh
index 095fbff05..9985d7eb3 100644
--- a/scripts/build/setup/termux_setup_ninja.sh
+++ b/scripts/build/setup/termux_setup_ninja.sh
@@ -23,8 +23,8 @@ termux_setup_ninja() {
 		local NINJA_PKG_VERSION=$(bash -c ". $TERMUX_SCRIPTDIR/packages/ninja/build.sh; echo \$TERMUX_PKG_VERSION")
 		if ([ ! -e "$TERMUX_BUILT_PACKAGES_DIRECTORY/ninja" ] ||
 		    [ "$(cat "$TERMUX_BUILT_PACKAGES_DIRECTORY/ninja")" != "$NINJA_PKG_VERSION" ]) &&
-		   ([[ "$(dpkg --version 2>/dev/null)" && "$(dpkg-query -W -f '${db:Status-Status}\n' ninja 2>/dev/null)" != "installed" ]] ||
-		    [[ "$(pacman -V 2>/dev/null)" && ! "$(pacman -Q ninja 2>/dev/null)" ]]); then
+		   ([[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" && "$(dpkg-query -W -f '${db:Status-Status}\n' ninja 2>/dev/null)" != "installed" ]] ||
+		    [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" && ! "$(pacman -Q ninja 2>/dev/null)" ]]); then
 			echo "Package 'ninja' is not installed."
 			echo "You can install it with"
 			echo
diff --git a/scripts/build/setup/termux_setup_rust.sh b/scripts/build/setup/termux_setup_rust.sh
index 32a81080f..dfd676ceb 100644
--- a/scripts/build/setup/termux_setup_rust.sh
+++ b/scripts/build/setup/termux_setup_rust.sh
@@ -6,8 +6,8 @@ termux_setup_rust() {
 	fi
 
 	if [ "$TERMUX_ON_DEVICE_BUILD" = "true" ]; then
-		if [[ "$(dpkg --version 2>/dev/null)" && "$(dpkg-query -W -f '${db:Status-Status}\n' rust 2>/dev/null)" != "installed" ]] ||
-                   [[ "$(pacman -V 2>/dev/null)" && ! "$(pacman -Q rust 2>/dev/null)" ]]; then
+		if [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" && "$(dpkg-query -W -f '${db:Status-Status}\n' rust 2>/dev/null)" != "installed" ]] ||
+                   [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" && ! "$(pacman -Q rust 2>/dev/null)" ]]; then
 			echo "Package 'rust' is not installed."
 			echo "You can install it with"
 			echo
diff --git a/scripts/build/termux_download_deb_pac.sh b/scripts/build/termux_download_deb_pac.sh
index dc476e50a..86831b19d 100755
--- a/scripts/build/termux_download_deb_pac.sh
+++ b/scripts/build/termux_download_deb_pac.sh
@@ -5,7 +5,10 @@ termux_download_deb_pac() {
 	local VERSION_PACMAN=$4
 
 	if [ "$TERMUX_ON_DEVICE_BUILD" = "true" ]; then
-		apt install -y "${PACKAGE}=${VERSION}" 2>/dev/null || pacman -S "${PACKAGE}=${VERSION_PACMAN}" --needed --noconfirm
+		case "$TERMUX_MAIN_PACKAGE_FORMAT" in
+			"debian") apt install -y "${PACKAGE}=${VERSION}";;
+			"pacman") pacman -S "${PACKAGE}=${VERSION_PACMAN}" --needed --noconfirm;;
+		esac
 		return "$?"
 	fi
 
diff --git a/scripts/build/termux_step_get_dependencies.sh b/scripts/build/termux_step_get_dependencies.sh
index 0b6145490..8fb92cd7b 100644
--- a/scripts/build/termux_step_get_dependencies.sh
+++ b/scripts/build/termux_step_get_dependencies.sh
@@ -4,7 +4,12 @@ termux_step_get_dependencies() {
 		termux_get_repo_files
 
 		# When doing build on device, ensure that apt lists are up-to-date.
-		[ "$TERMUX_ON_DEVICE_BUILD" = "true" ] && (apt update 2>/dev/null || pacman -Sy)
+		if [ "$TERMUX_ON_DEVICE_BUILD" = "true" ]; then
+			case "$TERMUX_MAIN_PACKAGE_FORMAT" in
+				"debian") apt update;;
+				"pacman") pacman -Sy;;
+			esac
+		fi
 
 		# Download dependencies
 		while read PKG PKG_DIR; do
diff --git a/scripts/build/termux_step_setup_variables.sh b/scripts/build/termux_step_setup_variables.sh
index 9a714fee9..e9b8657fb 100644
--- a/scripts/build/termux_step_setup_variables.sh
+++ b/scripts/build/termux_step_setup_variables.sh
@@ -1,5 +1,5 @@
 termux_step_setup_variables() {
-	: "${TERMUX_PACKAGE_FORMAT:="debian"}" # debian, pacman
+	: "${TERMUX_PACKAGE_FORMAT:="$(([ -n "$TERMUX_MAIN_PACKAGE_FORMAT" ] && echo "$TERMUX_MAIN_PACKAGE_FORMAT") || echo "debian")"}" # debian, pacman
 	: "${TERMUX_ARCH:="aarch64"}" # arm, aarch64, i686 or x86_64.
 	: "${TERMUX_OUTPUT_DIR:="${TERMUX_SCRIPTDIR}/output"}"
 	: "${TERMUX_DEBUG_BUILD:="false"}"
diff --git a/scripts/build/termux_step_start_build.sh b/scripts/build/termux_step_start_build.sh
index b1b7c7b5f..7c5439703 100644
--- a/scripts/build/termux_step_start_build.sh
+++ b/scripts/build/termux_step_start_build.sh
@@ -55,8 +55,8 @@ termux_step_start_build() {
 			echo "$TERMUX_PKG_NAME@$TERMUX_PKG_FULLVERSION built - skipping (rm $TERMUX_BUILT_PACKAGES_DIRECTORY/$TERMUX_PKG_NAME to force rebuild)"
 			exit 0
 		elif [ "$TERMUX_ON_DEVICE_BUILD" = "true" ] &&
-			([ "$(dpkg-query -W -f '${db:Status-Status} ${Version}\n' "$TERMUX_PKG_NAME" 2>/dev/null)" = "installed $TERMUX_PKG_FULLVERSION" ] ||
-			 [ "$(pacman -Q $TERMUX_PKG_NAME 2>/dev/null)" = "$TERMUX_PKG_NAME $TERMUX_PKG_FULLVERSION_FOR_PACMAN" ]); then
+			([[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" && "$(dpkg-query -W -f '${db:Status-Status} ${Version}\n' "$TERMUX_PKG_NAME" 2>/dev/null)" = "installed $TERMUX_PKG_FULLVERSION" ]] ||
+			 [[ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" && "$(pacman -Q $TERMUX_PKG_NAME 2>/dev/null)" = "$TERMUX_PKG_NAME $TERMUX_PKG_FULLVERSION_FOR_PACMAN" ]]); then
 			echo "$TERMUX_PKG_NAME@$TERMUX_PKG_FULLVERSION installed - skipping"
 			exit 0
 		fi