install required tools before install yadr

Rakefile

@@ -32,10 +32,6 @@ task :install => [:submodule_init, :submodules] do
     Rake::Task["install_vundle"].execute
   end
 
-  Rake::Task["install_utilities"].execute
-
-  Rake::Task["install_zsh"].execute
-
   Rake::Task["install_ycm"].execute
 
   Rake::Task["install_prezto"].execute
@@ -55,31 +51,6 @@ task :install_prezto do
   end
 end
 
-task :install_utilities do
-  run %{
-    if [ "$(uname)" = "Darwin" ]; then
-      brew install git
-    elif [ "$(expr substr $(uname -s) 1 5)" = "Linux" ]; then
-      apt install git fc-cache -y
-    fi
-  }
-end
-
-task :install_zsh do
-  if want_to_install?('zsh')
-    run %{
-      which zsh
-      if [ $? -ne 0 ]; then
-        if [ "$(uname)" = "Darwin" ]; then
-          brew install zsh
-        elif [ "$(expr substr $(uname -s) 1 5)" = "Linux" ]; then
-          apt install zsh -y
-        fi
-      fi
-    }
-  end
-end
-
 task :install_ycm do
   if want_to_install?('YouCompleteMe')
     run %{

install.sh

@@ -1,5 +1,29 @@
 #!/bin/sh
 
+exists () {
+  which $1 &> /dev/null; echo $?
+}
+
+declare -a tools=("zsh" "git" "rake")
+
+for tool in "${tools[@]}"; do
+  if [ `exists $tool` != "0" ]; then
+    if [ "$(uname)" = "Darwin" ]; then
+      brew install $tool
+    elif [ "$(expr substr $(uname -s) 1 5)" = "Linux" ]; then
+      apt $tool -y
+    fi
+  fi
+done
+
+if [ `exists fc-cache` != "0" ]; then
+  if [ "$(uname)" = "Darwin" ]; then
+    brew install fontconfig
+  elif [ "$(expr substr $(uname -s) 1 5)" = "Linux" ]; then
+    apt fc-cache -y
+  fi
+fi
+
 if [ ! -d "$HOME/.yadr" ]; then
     echo "Installing YADR for the first time"
     git clone --depth=1 https://github.com/rallets-network/dotfiles.git "$HOME/.yadr"