Add package installation script.

packages/os.sh

@@ -0,0 +1,92 @@
+#!/bin/sh -e
+
+tag_file="$(mktemp)"
+trap 'rm "${tag_file}"' EXIT
+
+add_tag() {
+	for tag in "$@"; do
+		if ! has_tags "$tag"; then
+			echo "Adding detected tag: $tag"
+			echo "${tag}" >> "${tag_file}"
+		fi
+	done
+}
+
+has_tags() {
+	for req in "$@"; do
+		printf "Checking for tag: $req... "
+		local detected=0
+		while IFS= read -r line; do
+			if [ "$line" = "$req" ]; then
+				echo "yes"
+				detected=1
+				break
+			fi
+		done < "$tag_file"
+		if [ "$detected" -eq 0 ]; then
+			echo "no"
+			return 1
+		fi
+	done
+	return 0
+}
+
+has_binary() {
+	printf "Checking for binary: $1... "
+	if ! command -v "$1" >/dev/null 2>&1; then
+		echo "no"
+		return 1
+	fi
+	echo "yes"
+	return 0
+}
+
+# arch linux
+
+if [ -f /etc/arch-release ]; then
+	add_tag os:arch
+	add_tag os_like:archlinux
+fi
+
+# os-release
+
+if [ -f /etc/os-release ]; then
+	(
+		source /etc/os-release
+		add_tag "os:${ID}"
+		if [ ! -z "${ID_LIKE}" ]; then
+			add_tag "os_like:${ID_LIKE}"
+		fi
+		if [ ! -z "${VERSION_ID}" ]; then
+			add_tag "version:${VERSION_ID}"
+		fi
+		if [ ! -z "${VERSION_CODENAME}" ]; then
+			add_tag "version:${VERSION_CODENAME}"
+		fi
+		if [ ! -z "${UBUNTU_CODENAME}" ]; then
+			add_tag "version:${UBUNTU_CODENAME}"
+		fi
+	)
+fi
+
+# package manager detection
+
+for pm in \
+	pacaur \
+	pacman \
+	pip \
+	npm \
+	yaourt \
+	yarn \
+	yay \
+	; do
+	if has_binary "$pm"; then
+		add_tag "pm:$pm"
+	fi
+done
+
+# graphics UI detection
+# basically just checks if an X server is running on the machine and if yes, we just assume it's a desktop, not a server
+if ps aux | grep Xorg >/dev/null 2>&1; then
+	add_tag "xorg_running" "desktop"
+fi

packages/packages.sh

@@ -0,0 +1,121 @@
+#!/bin/sh
+
+source ./os.sh
+
+apt_install() {
+	DEBIAN_FRONTEND="noninteractive" apt-get install -y "$@"
+}
+
+pacman_install() {
+	sudo pacman -S --noconfirm --needed "$@"
+}
+
+yay_install() {
+	yay -S --noconfirm --needed "$@"
+}
+
+pacaur_install() {
+	pacaur -S --noconfirm --needed "$@"
+}
+
+yaourt_install() {
+	yaourt -S --noconfirm --needed "$@"
+}
+
+pip3_install() {
+	pip3 install --user -U "$@"
+}
+
+###
+
+# Actual package installation code from here
+
+# Arch Linux
+
+if has_tags pm:pacman; then
+	# libarchive for bsdtar
+	pacman_install \
+		makepkg \
+		base-devel \
+		libarchive \
+		tar \
+		gzip \
+		xz
+
+	# yay
+	if ! has_tags pm:yay; then
+		if has_tags pacaur; then
+			pacaur_install yay
+		elif has_tags yaourt; then
+			yaourt_install yay
+		else
+			(
+				dir="$(mktemp -d)"
+				cd "${dir}"
+				wget https://aur.archlinux.org/cgit/aur.git/snapshot/yay.tar.gz -O- | tar -xz --strip=1
+				makepkg -sri --noconfirm
+				cd
+				rm -rf "${dir}"
+			)
+		fi
+		add_tag pm:yay
+	fi
+
+	# from here on we should have yay available
+	yay_install \
+		zsh \
+		zsh-syntax-highlighting
+
+	if has_tags desktop; then
+		yay_install \
+			powerline-fonts \
+			rxvt-unicode-better-wheel-scrolling-unicode3 \
+			ttf-fantasque-sans-mono \
+			rxvt-unicode \
+			urxvt-tabbedex \
+			ibus
+	else
+		yay_install \
+			rxvt-unicode-terminfo
+	fi
+
+	# pip
+	if ! has_tags pm:pip3; then
+		yay_install python-pip
+		add_tag pm:pip3
+	fi
+fi
+
+# Debian/Ubuntu-ish
+
+if has_tags pm:apt; then
+	sudo apt update
+	apt_install \
+		bsdtar \
+		tar \
+		gzip \
+		xz-utils \
+		python-pip \
+		zsh \
+		zsh-syntax-highlighting \
+		ibus
+	add_tag pm:pip3
+fi
+
+# Python3
+
+if has_tags pm:pip3; then
+	pip3_install powerline-status
+fi
+
+# change default terminal to urxvt
+
+if has_tags desktop; then
+	if has_tags os_like:debian; then
+		sudo update-alternatives --config urxvt
+	fi
+	for de in gnome cinnamon; do
+		gsettings set org.${de}.desktop.default-applications.terminal exec /usr/bin/urxvt
+		gsettings set org.${de}.desktop.default-applications.terminal exec-arg "-x"
+	done
+fi