diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e192558
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+test/*
\ No newline at end of file
diff --git a/README.md b/README.md
old mode 100644
new mode 100755
diff --git a/featlib/docker.sh b/featlib/docker.sh
new file mode 100755
index 0000000..7ed640a
--- /dev/null
+++ b/featlib/docker.sh
@@ -0,0 +1,41 @@
+#! /bin/bash --
+[ ! -z "${GREZZO_1577141523}" ] && return; GREZZO_1577141523=0
+unset CDPATH
+DOVE="$(cd "$(dirname "$(readlink -f -- "${BASH_SOURCE[0]}")")" > /dev/null && pwd -P)"
+
+. "$DOVE/../grezzo.sh"
+
+function feat_addpacks_docker() {
+	if ! feat_missing "apt-get"; then
+		sudo apt-get remove docker docker-engine docker.io containerd runc
+		sudo apt-get update
+		if [ $(apt-cache search docker-ce | grep -o "^docker-ce ") != "docker-ce" ]; then
+			sudo apt-get install \
+				apt-transport-https \
+				ca-certificates \
+				curl \
+				gnupg-agent \
+				software-properties-common
+			curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
+			sudo add-apt-repository \
+			"deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/ubuntu \
+			$(lsb_release -cs) \
+			stable"
+			sudo apt-get update
+		fi
+		sudo apt-get install docker-ce docker-ce-cli containerd.io
+	fi
+}
+
+function feat_add_docker() {
+	if feat_missing "dockerd"; then
+		feat_addpacks_docker
+	fi
+}
+
+function pip_feat_add_docker-compose() {
+	. "$DOVE/pip.sh"
+	pip_feat_add "docker-compose"
+}
+
+unset DOVE
\ No newline at end of file
diff --git a/featlib/npm.sh b/featlib/npm.sh
new file mode 100755
index 0000000..b84b37c
--- /dev/null
+++ b/featlib/npm.sh
@@ -0,0 +1,35 @@
+#! /bin/bash --
+[ ! -z "${GREZZO_1577142009}" ] && return; GREZZO_1577142009=0
+unset CDPATH
+DOVE="$(cd "$(dirname "$(readlink -f -- "${BASH_SOURCE[0]}")")" > /dev/null && pwd -P)"
+
+. "$DOVE/../grezzo.sh"
+
+function feat_addpacks_npm_dev() {
+	if ! feat_missing "apt-get"; then
+		sudo apt-get install -y wget curl tar
+	elif ! feat_missing "pacman"; then
+		sudo pacman -S --needed base-devel wget curl tar
+	elif ! feat_missing "apk"; then
+		sudo apk add --no-cache wget curl tar bash
+	elif ! feat_missing "yum"; then
+		sudo yum install wget curl tar
+	elif ! feat_missing "zypper"; then
+		sudo zypper in wget curl tar
+	fi
+}
+
+function feat_add_npm() {
+	feat_addpacks_npm_dev
+	cat - "$HOME/.bashrc" <<- EOF > "$HOME/.bashrc.tmp"
+		export N_PREFIX="$HOME/.n_prefix"
+		export PATH="$N_PREFIX/bin:\$PATH"
+	EOF
+	mv "$HOME/.bashrc.tmp" "$HOME/.bashrc"
+	. "$HOME/.bashrc"
+	mkdir -p "$N_PREFIX"
+	curl -L https://raw.githubusercontent.com/tj/n/master/bin/n | bash -s latest
+	npm install -g n
+}
+
+unset DOVE
\ No newline at end of file
diff --git a/featlib/pip.sh b/featlib/pip.sh
new file mode 100755
index 0000000..e9f08e7
--- /dev/null
+++ b/featlib/pip.sh
@@ -0,0 +1,68 @@
+#! /bin/bash --
+[ ! -z "${GREZZO_1577142035}" ] && return; GREZZO_1577142035=0
+unset CDPATH
+DOVE="$(cd "$(dirname "$(readlink -f -- "${BASH_SOURCE[0]}")")" > /dev/null && pwd -P)"
+
+. "$DOVE/../grezzo.sh"
+
+function feat_addpacks_pip_dev() {
+	if ! feat_missing "apt-get"; then
+		sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev \
+		libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
+		xz-utils tk-dev libffi-dev liblzma-dev python-openssl git
+	elif ! feat_missing "pacman"; then
+		sudo pacman -S --needed base-devel openssl zlib bzip2 readline sqlite curl \
+		llvm ncurses xz tk libffi python-pyopenssl git
+	elif ! feat_missing "apk"; then
+		sudo apk add --no-cache bzip2-dev coreutils dpkg-dev dpkg expat-dev git curl \
+		findutils gcc gdbm-dev libc-dev libffi-dev libnsl-dev libtirpc-dev \
+		linux-headers make ncurses-dev openssl-dev pax-utils readline-dev \
+		sqlite-dev tcl-dev tk tk-dev util-linux-dev xz-dev zlib-dev bash
+	elif ! feat_missing "yum"; then
+		sudo yum install @development zlib-devel bzip2 bzip2-devel readline-devel sqlite \
+		sqlite-devel openssl-devel xz xz-devel libffi-devel findutils
+	elif ! feat_missing "zypper"; then
+		sudo zypper in zlib-devel bzip2 libbz2-devel libffi-devel libopenssl-devel \
+		readline-devel sqlite3 sqlite3-devel xz xz-devel
+	fi
+}
+
+function feat_add_pip() {
+	feat_addpacks_pip_dev
+	sed -n -e '/# Load pyenv automatically/,$p' \
+		<(curl https://pyenv.run | bash 2>&1) \
+		| cat - "$HOME/.bashrc" > "$HOME/.bashrc.tmp"
+	mv "$HOME/.bashrc.tmp" "$HOME/.bashrc"
+	. "$HOME/.bashrc"
+	LATESTPYTHON="$(pyenv install -l | grep '^[0-9\. ]*$' | sed -ne '$s|\s*||gp')"
+	pyenv install "$LATESTPYTHON"
+	pyenv global "$LATESTPYTHON"
+	pip install --upgrade pip
+}
+
+
+function pip_feat_missing() {
+	if feat_missing "pip"; then
+		true
+	else
+		! python -c "import $1" >/dev/null 2>&1
+	fi
+}
+
+function pip_feat_add() {
+	pip install "$1"
+}
+
+function pip_feat_needed() {
+	feat_needed "pip"
+	FEAT="$1"
+	if pip_feat_missing "$FEAT"; then
+		if type "pip_feat_add_$FEAT" > /dev/null 2>&1 ; then
+			eval "pip_feat_add_$FEAT"
+		else
+			pip_feat_add "$FEAT"
+		fi
+	fi
+}
+
+unset DOVE
\ No newline at end of file
diff --git a/featlib/poetry.sh b/featlib/poetry.sh
new file mode 100644
index 0000000..f55054c
--- /dev/null
+++ b/featlib/poetry.sh
@@ -0,0 +1,60 @@
+#! /bin/bash --
+[ ! -z "${GREZZO_1577142078}" ] && return; GREZZO_1577142078=0
+unset CDPATH
+DOVE="$(cd "$(dirname "$(readlink -f -- "${BASH_SOURCE[0]}")")" > /dev/null && pwd -P)"
+
+. "$DOVE/pip.sh"
+
+function feat_add_poetry() {
+	feat_needed "pip"
+	curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python
+	. "$HOME/.poetry/env"
+}
+
+function poetry_initialized() {
+	poetry check >/dev/null 2>&1
+}
+
+function poetry_feat_added() {
+	poetry show | cut -f1 -d ' ' | grep -q ^"$1"$
+}
+
+function poetry_feat_missing() {
+	if feat_missing "pip"; then
+		true
+	else
+		if feat_missing "poetry"; then
+			true
+		else
+			if ! poetry_initialized; then
+				true
+			fi
+			! poetry run python -c "import $1" >/dev/null 2>&1
+		fi
+	fi
+}
+
+function poetry_feat_needed() {
+	feat_needed "poetry"
+	FEAT="$1"
+	if ! poetry_initialized; then
+		poetry init
+	fi
+	if poetry_feat_added "$FEAT"; then
+		if poetry_feat_missing "$FEAT"; then
+			poetry install
+		fi
+	else
+		if type "poetry_feat_add_$FEAT" > /dev/null 2>&1 ; then
+			eval "poetry_feat_add_$FEAT"
+		else
+			poetry_feat_add "$FEAT"
+		fi
+	fi
+}
+
+function poetry_feat_add() {
+	poetry add "$1"
+}
+
+unset DOVE
\ No newline at end of file
diff --git a/featlib/poetry/django.sh b/featlib/poetry/django.sh
new file mode 100755
index 0000000..1c1defe
--- /dev/null
+++ b/featlib/poetry/django.sh
@@ -0,0 +1,15 @@
+#! /bin/bash --
+
+# Questo è un esempio di custom callback. poetry_feat_needed chiama prima poetry_feat_add_django,
+# qui definito, che può effettuare altre operazioni prima e/o dopo il lancio di poetry_feat_add.
+
+[ ! -z "${GREZZO_1577141483}" ] && return; GREZZO_1577141483=0
+unset CDPATH
+DOVE="$(cd "$(dirname "$(readlink -f -- "${BASH_SOURCE[0]}")")" > /dev/null && pwd -P)"
+
+function poetry_feat_add_django() {
+	. "$DOVE/../poetry.sh"
+	poetry_feat_add "django"
+}
+
+unset DOVE
\ No newline at end of file
diff --git a/getdocker.sh b/getdocker.sh
new file mode 100644
index 0000000..0f5313b
--- /dev/null
+++ b/getdocker.sh
@@ -0,0 +1,406 @@
+#!/bin/sh
+
+command_exists() {
+	command -v "$@" > /dev/null 2>&1
+}
+
+is_dry_run() {
+	if [ -z "$DRY_RUN" ]; then
+		return 1
+	else
+		return 0
+	fi
+}
+
+deprecation_notice() {
+	distro=$1
+	date=$2
+	echo
+	echo "DEPRECATION WARNING:"
+	echo "    The distribution, $distro, will no longer be supported in this script as of $date."
+	echo "    If you feel this is a mistake please submit an issue at https://github.com/docker/docker-install/issues/new"
+	echo
+	sleep 10
+}
+
+get_distribution() {
+	lsb_dist=""
+	# Every system that we officially support has /etc/os-release
+	if [ -r /etc/os-release ]; then
+		lsb_dist="$(. /etc/os-release && echo "$ID")"
+	fi
+	# Returning an empty string here should be alright since the
+	# case statements don't act unless you provide an actual value
+	echo "$lsb_dist"
+}
+
+add_debian_backport_repo() {
+	debian_version="$1"
+	backports="deb http://ftp.debian.org/debian $debian_version-backports main"
+	if ! grep -Fxq "$backports" /etc/apt/sources.list; then
+		(set -x; $sh_c "echo \"$backports\" >> /etc/apt/sources.list")
+	fi
+}
+
+echo_docker_as_nonroot() {
+	if is_dry_run; then
+		return
+	fi
+	if command_exists docker && [ -e /var/run/docker.sock ]; then
+		(
+			set -x
+			$sh_c 'docker version'
+		) || true
+	fi
+	your_user=your-user
+	[ "$user" != 'root' ] && your_user="$user"
+	# intentionally mixed spaces and tabs here -- tabs are stripped by "<<-EOF", spaces are kept in the output
+	echo "If you would like to use Docker as a non-root user, you should now consider"
+	echo "adding your user to the \"docker\" group with something like:"
+	echo
+	echo "  sudo usermod -aG docker $your_user"
+	echo
+	echo "Remember that you will have to log out and back in for this to take effect!"
+	echo
+	echo "WARNING: Adding a user to the \"docker\" group will grant the ability to run"
+	echo "         containers which can be used to obtain root privileges on the"
+	echo "         docker host."
+	echo "         Refer to https://docs.docker.com/engine/security/security/#docker-daemon-attack-surface"
+	echo "         for more information."
+
+}
+
+# Check if this is a forked Linux distro
+check_forked() {
+
+	# Check for lsb_release command existence, it usually exists in forked distros
+	if command_exists lsb_release; then
+		# Check if the `-u` option is supported
+		set +e
+		lsb_release -a -u > /dev/null 2>&1
+		lsb_release_exit_code=$?
+		set -e
+
+		# Check if the command has exited successfully, it means we're in a forked distro
+		if [ "$lsb_release_exit_code" = "0" ]; then
+			# Print info about current distro
+			cat <<-EOF
+			You're using '$lsb_dist' version '$dist_version'.
+			EOF
+
+			# Get the upstream release info
+			lsb_dist=$(lsb_release -a -u 2>&1 | tr '[:upper:]' '[:lower:]' | grep -E 'id' | cut -d ':' -f 2 | tr -d '[:space:]')
+			dist_version=$(lsb_release -a -u 2>&1 | tr '[:upper:]' '[:lower:]' | grep -E 'codename' | cut -d ':' -f 2 | tr -d '[:space:]')
+
+			# Print info about upstream distro
+			cat <<-EOF
+			Upstream release is '$lsb_dist' version '$dist_version'.
+			EOF
+		else
+			if [ -r /etc/debian_version ] && [ "$lsb_dist" != "ubuntu" ] && [ "$lsb_dist" != "raspbian" ]; then
+				if [ "$lsb_dist" = "osmc" ]; then
+					# OSMC runs Raspbian
+					lsb_dist=raspbian
+				else
+					# We're Debian and don't even know it!
+					lsb_dist=debian
+				fi
+				dist_version="$(sed 's/\/.*//' /etc/debian_version | sed 's/\..*//')"
+				case "$dist_version" in
+					10)
+						dist_version="buster"
+					;;
+					9)
+						dist_version="stretch"
+					;;
+					8|'Kali Linux 2')
+						dist_version="jessie"
+					;;
+				esac
+			fi
+		fi
+	fi
+}
+
+semverParse() {
+	major="${1%%.*}"
+	minor="${1#$major.}"
+	minor="${minor%%.*}"
+	patch="${1#$major.$minor.}"
+	patch="${patch%%[-.]*}"
+}
+
+ee_notice() {
+	echo
+	echo
+	echo "  WARNING: $1 is now only supported by Docker EE"
+	echo "           Check https://store.docker.com for information on Docker EE"
+	echo
+	echo
+}
+
+do_install() {
+	echo "# Executing docker install script, commit: $SCRIPT_COMMIT_SHA"
+
+	if command_exists docker; then
+		docker_version="$(docker -v | cut -d ' ' -f3 | cut -d ',' -f1)"
+		MAJOR_W=1
+		MINOR_W=10
+
+		semverParse "$docker_version"
+
+		shouldWarn=0
+		if [ "$major" -lt "$MAJOR_W" ]; then
+			shouldWarn=1
+		fi
+
+		if [ "$major" -le "$MAJOR_W" ] && [ "$minor" -lt "$MINOR_W" ]; then
+			shouldWarn=1
+		fi
+
+		cat >&2 <<-'EOF'
+			Warning: the "docker" command appears to already exist on this system.
+
+			If you already have Docker installed, this script can cause trouble, which is
+			why we're displaying this warning and provide the opportunity to cancel the
+			installation.
+
+			If you installed the current Docker package using this script and are using it
+		EOF
+
+		if [ $shouldWarn -eq 1 ]; then
+			cat >&2 <<-'EOF'
+			again to update Docker, we urge you to migrate your image store before upgrading
+			to v1.10+.
+
+			You can find instructions for this here:
+			https://github.com/docker/docker/wiki/Engine-v1.10.0-content-addressability-migration
+			EOF
+		else
+			cat >&2 <<-'EOF'
+			again to update Docker, you can safely ignore this message.
+			EOF
+		fi
+
+		cat >&2 <<-'EOF'
+
+			You may press Ctrl+C now to abort this script.
+		EOF
+		( set -x; sleep 20 )
+	fi
+
+	user="$(id -un 2>/dev/null || true)"
+
+	sh_c='sh -c'
+	if [ "$user" != 'root' ]; then
+		if command_exists sudo; then
+			sh_c='sudo -E sh -c'
+		elif command_exists su; then
+			sh_c='su -c'
+		else
+			cat >&2 <<-'EOF'
+			Error: this installer needs the ability to run commands as root.
+			We are unable to find either "sudo" or "su" available to make this happen.
+			EOF
+			exit 1
+		fi
+	fi
+
+	if is_dry_run; then
+		sh_c="echo"
+	fi
+
+	# perform some very rudimentary platform detection
+	lsb_dist=$( get_distribution )
+	lsb_dist="$(echo "$lsb_dist" | tr '[:upper:]' '[:lower:]')"
+
+	case "$lsb_dist" in
+
+		ubuntu)
+			if command_exists lsb_release; then
+				dist_version="$(lsb_release --codename | cut -f2)"
+			fi
+			if [ -z "$dist_version" ] && [ -r /etc/lsb-release ]; then
+				dist_version="$(. /etc/lsb-release && echo "$DISTRIB_CODENAME")"
+			fi
+		;;
+
+		debian|raspbian)
+			dist_version="$(sed 's/\/.*//' /etc/debian_version | sed 's/\..*//')"
+			case "$dist_version" in
+				10)
+					dist_version="buster"
+				;;
+				9)
+					dist_version="stretch"
+				;;
+				8)
+					dist_version="jessie"
+				;;
+			esac
+		;;
+
+		centos)
+			if [ -z "$dist_version" ] && [ -r /etc/os-release ]; then
+				dist_version="$(. /etc/os-release && echo "$VERSION_ID")"
+			fi
+		;;
+
+		rhel|ol|sles)
+			ee_notice "$lsb_dist"
+			exit 1
+			;;
+
+		*)
+			if command_exists lsb_release; then
+				dist_version="$(lsb_release --release | cut -f2)"
+			fi
+			if [ -z "$dist_version" ] && [ -r /etc/os-release ]; then
+				dist_version="$(. /etc/os-release && echo "$VERSION_ID")"
+			fi
+		;;
+
+	esac
+
+	# Check if this is a forked Linux distro
+	check_forked
+
+	# Run setup for each distro accordingly
+	case "$lsb_dist" in
+		ubuntu|debian|raspbian)
+			pre_reqs="apt-transport-https ca-certificates curl"
+			if [ "$lsb_dist" = "debian" ]; then
+				# libseccomp2 does not exist for debian jessie main repos for aarch64
+				if [ "$(uname -m)" = "aarch64" ] && [ "$dist_version" = "jessie" ]; then
+					add_debian_backport_repo "$dist_version"
+				fi
+			fi
+
+			if ! command -v gpg > /dev/null; then
+				pre_reqs="$pre_reqs gnupg"
+			fi
+			apt_repo="deb [arch=$(dpkg --print-architecture)] $DOWNLOAD_URL/linux/$lsb_dist $dist_version $CHANNEL"
+			(
+				if ! is_dry_run; then
+					set -x
+				fi
+				$sh_c 'apt-get update -qq >/dev/null'
+				$sh_c "DEBIAN_FRONTEND=noninteractive apt-get install -y -qq $pre_reqs >/dev/null"
+				$sh_c "curl -fsSL \"$DOWNLOAD_URL/linux/$lsb_dist/gpg\" | apt-key add -qq - >/dev/null"
+				$sh_c "echo \"$apt_repo\" > /etc/apt/sources.list.d/docker.list"
+				$sh_c 'apt-get update -qq >/dev/null'
+			)
+			pkg_version=""
+			if [ -n "$VERSION" ]; then
+				if is_dry_run; then
+					echo "# WARNING: VERSION pinning is not supported in DRY_RUN"
+				else
+					# Will work for incomplete versions IE (17.12), but may not actually grab the "latest" if in the test channel
+					pkg_pattern="$(echo "$VERSION" | sed "s/-ce-/~ce~.*/g" | sed "s/-/.*/g").*-0~$lsb_dist"
+					search_command="apt-cache madison 'docker-ce' | grep '$pkg_pattern' | head -1 | awk '{\$1=\$1};1' | cut -d' ' -f 3"
+					pkg_version="$($sh_c "$search_command")"
+					echo "INFO: Searching repository for VERSION '$VERSION'"
+					echo "INFO: $search_command"
+					if [ -z "$pkg_version" ]; then
+						echo
+						echo "ERROR: '$VERSION' not found amongst apt-cache madison results"
+						echo
+						exit 1
+					fi
+					search_command="apt-cache madison 'docker-ce-cli' | grep '$pkg_pattern' | head -1 | awk '{\$1=\$1};1' | cut -d' ' -f 3"
+					# Don't insert an = for cli_pkg_version, we'll just include it later
+					cli_pkg_version="$($sh_c "$search_command")"
+					pkg_version="=$pkg_version"
+				fi
+			fi
+			(
+				if ! is_dry_run; then
+					set -x
+				fi
+				if [ -n "$cli_pkg_version" ]; then
+					$sh_c "apt-get install -y -qq --no-install-recommends docker-ce-cli=$cli_pkg_version >/dev/null"
+				fi
+				$sh_c "apt-get install -y -qq --no-install-recommends docker-ce$pkg_version >/dev/null"
+			)
+			echo_docker_as_nonroot
+			exit 0
+			;;
+		centos|fedora)
+			yum_repo="$DOWNLOAD_URL/linux/$lsb_dist/$REPO_FILE"
+			if ! curl -Ifs "$yum_repo" > /dev/null; then
+				echo "Error: Unable to curl repository file $yum_repo, is it valid?"
+				exit 1
+			fi
+			if [ "$lsb_dist" = "fedora" ]; then
+				pkg_manager="dnf"
+				config_manager="dnf config-manager"
+				enable_channel_flag="--set-enabled"
+				disable_channel_flag="--set-disabled"
+				pre_reqs="dnf-plugins-core"
+				pkg_suffix="fc$dist_version"
+			else
+				pkg_manager="yum"
+				config_manager="yum-config-manager"
+				enable_channel_flag="--enable"
+				disable_channel_flag="--disable"
+				pre_reqs="yum-utils"
+				pkg_suffix="el"
+			fi
+			(
+				if ! is_dry_run; then
+					set -x
+				fi
+				$sh_c "$pkg_manager install -y -q $pre_reqs"
+				$sh_c "$config_manager --add-repo $yum_repo"
+
+				if [ "$CHANNEL" != "stable" ]; then
+					$sh_c "$config_manager $disable_channel_flag docker-ce-*"
+					$sh_c "$config_manager $enable_channel_flag docker-ce-$CHANNEL"
+				fi
+				$sh_c "$pkg_manager makecache"
+			)
+			pkg_version=""
+			if [ -n "$VERSION" ]; then
+				if is_dry_run; then
+					echo "# WARNING: VERSION pinning is not supported in DRY_RUN"
+				else
+					pkg_pattern="$(echo "$VERSION" | sed "s/-ce-/\\\\.ce.*/g" | sed "s/-/.*/g").*$pkg_suffix"
+					search_command="$pkg_manager list --showduplicates 'docker-ce' | grep '$pkg_pattern' | tail -1 | awk '{print \$2}'"
+					pkg_version="$($sh_c "$search_command")"
+					echo "INFO: Searching repository for VERSION '$VERSION'"
+					echo "INFO: $search_command"
+					if [ -z "$pkg_version" ]; then
+						echo
+						echo "ERROR: '$VERSION' not found amongst $pkg_manager list results"
+						echo
+						exit 1
+					fi
+					search_command="$pkg_manager list --showduplicates 'docker-ce-cli' | grep '$pkg_pattern' | tail -1 | awk '{print \$2}'"
+					# It's okay for cli_pkg_version to be blank, since older versions don't support a cli package
+					cli_pkg_version="$($sh_c "$search_command" | cut -d':' -f 2)"
+					# Cut out the epoch and prefix with a '-'
+					pkg_version="-$(echo "$pkg_version" | cut -d':' -f 2)"
+				fi
+			fi
+			(
+				if ! is_dry_run; then
+					set -x
+				fi
+				# install the correct cli version first
+				if [ -n "$cli_pkg_version" ]; then
+					$sh_c "$pkg_manager install -y -q docker-ce-cli-$cli_pkg_version"
+				fi
+				$sh_c "$pkg_manager install -y -q docker-ce$pkg_version"
+			)
+			echo_docker_as_nonroot
+			exit 0
+			;;
+		*)
+			echo
+			echo "ERROR: Unsupported distribution '$lsb_dist'"
+			echo
+			exit 1
+			;;
+	esac
+	exit 1
+}
diff --git a/grezzo.sh b/grezzo.sh
new file mode 100755
index 0000000..c411a25
--- /dev/null
+++ b/grezzo.sh
@@ -0,0 +1,13 @@
+#! /bin/bash --
+[ ! -z "${GREZZO_1577142105}" ] && return; GREZZO_1577142105=0
+
+function feat_missing() {
+	! command -v "$1" 2>&1 >/dev/null
+}
+
+function feat_needed() {
+	FEAT="$1"
+	if feat_missing "$FEAT"; then
+		eval "feat_add_$FEAT"
+	fi
+}
\ No newline at end of file
diff --git a/test.sh b/test.sh
new file mode 100755
index 0000000..a128204
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,10 @@
+#! /bin/bash --
+unset CDPATH
+DOVE="$(cd "$(dirname "$(readlink -f -- "${BASH_SOURCE[0]}")")" > /dev/null && pwd -P)"
+
+. "$DOVE/featlib/poetry.sh"
+
+mkdir -p test
+cd test
+poetry_feat_needed "django"
+poetry_feat_needed "numpy"
\ No newline at end of file