Make all installers idempotent

install/chrome.sh

@@ -1,5 +1,7 @@
+if ! command -v google-chrome &>/dev/null; then
 	cd ~/Downloads
 	wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
 	sudo dpkg -i google-chrome-stable_current_amd64.deb
 	rm google-chrome-stable_current_amd64.deb
 	cd -
+fi

install/docker.sh

@@ -1,3 +1,4 @@
+if ! command -v docker &>/dev/null; then
 	DOCKER_COMPOSE_VERSION="2.27.0"
 	sudo apt install -y docker.io docker-buildx
 
@@ -9,3 +10,4 @@ chmod +x $DOCKER_CONFIG/cli-plugins/docker-compose
 
 	sudo docker create -d --restart unless-stopped -p 3306:3306 --name=mysql8 -e MYSQL_ROOT_PASSWORD= -e MYSQL_ALLOW_EMPTY_PASSWORD=true mysql:8
 	sudo docker create -d --restart unless-stopped -p 6379:6379 --name=redis redis
+fi

install/dotfiles.sh

@@ -7,17 +7,28 @@ for entry in dotfiles/*; do
 	# Any existing files will be renamed .bak
 	if [ -f "$entry" ]; then
 		target=~/."$(basename "$entry")"
-		[ -e "$target" ] && mv "$target" "$target.bak"
+
+		if [ -e "$target" ] && [ "$(readlink "$target")" != "$(pwd)/$entry" ]; then
+			mv "$target" "$target.bak"
+		fi
+
+		if [ ! -e "$target" ]; then
 			ln -s "$(pwd)/$entry" "$target"
 		fi
+	fi
 
 	# Link all directories in ~/.config/
 	# Any existing directories will be renamed .bak
 	if [ -d "$entry" ]; then
 		target=~/.config/"$(basename "$entry")"
-		[ -e "$target" ] && mv "$target" "$target.bak"
+
+		if [ -e "$target" ] && [ "$(readlink "$target")" != "$(pwd)/$entry" ]; then
+			mv "$target" "$target.bak"
+		fi
+
+		if [ ! -e "$target" ]; then
 			ln -s "$(pwd)/$entry" "$target"
 		fi
+	fi
 done
-
 unset entry

install/fonts.sh

@@ -1,3 +1,4 @@
+if ! [ -f "$HOME/.local/share/fonts/CaskaydiaMonoNerdFont-Regular.ttf" ]; then
 	cd ~/Downloads
 	wget https://github.com/ryanoasis/nerd-fonts/releases/download/v3.1.1/CascadiaMono.zip
 	unzip CascadiaMono.zip -d CascadiaFont
@@ -6,3 +7,4 @@ cp CascadiaFont/*.ttf ~/.local/share/fonts
 	rm -rf CascadiaMono.zip CascadiaFont
 	fc-cache
 	cd -
+fi

install/gh.sh

@@ -1,5 +1,7 @@
+if ! command -v gh &>/dev/null; then
 	curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | sudo dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg &&
 		sudo chmod go+r /usr/share/keyrings/githubcli-archive-keyring.gpg &&
 		echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list >/dev/null &&
 		sudo apt update &&
 		sudo apt install gh -y
+fi

install/lazydocker.sh

@@ -1,3 +1,4 @@
+if ! command -v lazydocker &>/dev/null; then
 	cd ~/Downloads
 	LAZYDOCKER_VERSION=$(curl -s "https://api.github.com/repos/jesseduffield/lazydocker/releases/latest" | grep -Po '"tag_name": "v\K[^"]*')
 	curl -sLo lazydocker.tar.gz "https://github.com/jesseduffield/lazydocker/releases/latest/download/lazydocker_${LAZYDOCKER_VERSION}_Linux_x86_64.tar.gz"
@@ -5,3 +6,4 @@ tar -xf lazydocker.tar.gz lazydocker
 	sudo install lazydocker /usr/local/bin
 	rm lazydocker.tar.gz
 	cd -
+fi

install/lazygit.sh

@@ -1,3 +1,4 @@
+if ! command -v lazygit &>/dev/null; then
 	cd ~/Downloads
 	LAZYGIT_VERSION=$(curl -s "https://api.github.com/repos/jesseduffield/lazygit/releases/latest" | grep -Po '"tag_name": "v\K[^"]*')
 	curl -sLo lazygit.tar.gz "https://github.com/jesseduffield/lazygit/releases/latest/download/lazygit_${LAZYGIT_VERSION}_Linux_x86_64.tar.gz"
@@ -5,3 +6,4 @@ tar -xf lazygit.tar.gz lazygit
 	sudo install lazygit /usr/local/bin
 	rm lazygit.tar.gz
 	cd -
+fi

install/neovim.sh

@@ -1,4 +1,6 @@
+if ! command -v neovim &>/dev/null; then
 	sudo add-apt-repository -y ppa:neovim-ppa/stable
 	sudo apt update -y
 	sudo apt install -y neovim
 	git clone https://github.com/LazyVim/starter ~/.config/nvim
+fi

install/nodenv.sh

@@ -1,3 +1,4 @@
+if ! command -v nodenv &>/dev/null; then
 	git clone https://github.com/nodenv/nodenv.git ~/.nodenv
 	sudo ln -vs ~/.nodenv/bin/nodenv /usr/local/bin/nodenv
 	cd ~/.nodenv
@@ -9,4 +10,4 @@ git clone https://github.com/nodenv/nodenv-aliases.git $(nodenv root)/plugins/no
 	nodenv install 20.11.1
 	nodenv global 20.11.1
 	sudo ln -vs $(nodenv root)/shims/* /usr/local/bin/
-
+fi

install/ruby.sh

@@ -1,6 +1,8 @@
+if ! command -v rbenv &>/dev/null; then
 	DEFAULT_RUBY_VERSION="3.3.1"
 
 	sudo apt install -y rbenv
 	git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build
 	rbenv install $DEFAULT_RUBY_VERSION
 	rbenv global $DEFAULT_RUBY_VERSION
+fi

install/typora.sh

@@ -1,3 +1,4 @@
+if ! command -v typora &>/dev/null; then
 	sudo snap install typora
 	cd ~/Downloads
 	git clone https://github.com/dhh/ia_typora
@@ -7,3 +8,4 @@ fc-cache
 	mkdir -p ~/snap/typora/88/.config/Typora/themes/
 	cp ia_typora/ia_typora*.css ~/snap/typora/88/.config/Typora/themes/
 	cd -
+fi

install/ulauncher.sh

@@ -1,4 +1,6 @@
+if ! command -v ulauncher &>/dev/null; then
 	sudo add-apt-repository universe -y
 	sudo add-apt-repository ppa:agornostal/ulauncher -y
 	sudo apt update -y
 	sudo apt install -y ulauncher
+fi