Remove exits from install scripts

dev/pyenv/install

@@ -2,7 +2,6 @@
 
 if [[ -d "$HOME/.pyenv" ]]; then
     >&2 echo "~/.pyenv already exists, can't install."
-    exit 1
 else
     git clone https://github.com/yyuu/pyenv.git $HOME/.pyenv
 fi

dev/rbenv/install

@@ -2,7 +2,6 @@
 
 if [[ -d "$HOME/.rbenv" ]]; then
     >&2 echo "~/.rbenv already exists, can't install."
-    exit 1
 else
     git clone https://github.com/rbenv/rbenv.git $HOME/.rbenv
     git clone https://github.com/rbenv/ruby-build.git $HOME/.rbenv/plugins/ruby-build

editor/neovim/update

@@ -1,7 +1,5 @@
 #!/usr/bin/env bash
 
-command -v nvim >/dev/null || exit
-
 if [[ -d "$HOME/.vim" ]]; then
     cd "$HOME/.vim"
     make update

editor/vim/install

@@ -7,9 +7,6 @@ case $OSTYPE in
     linux*)
         if [[ -f /etc/arch-release ]]; then
             sudo pacman --needed --noconfirm -S make vim
-        elif [[ -f /etc/debian_version ]]; then
-            # TODO
-            exit 1
         fi
         ;;
 esac

editor/vimlite/install

@@ -9,7 +9,6 @@ case $OSTYPE in
             sudo pacman --needed --noconfirm -S vim
         elif [[ -f /etc/debian_version ]]; then
             sudo apt-get install -y vim
-            exit 1
         fi
         ;;
 esac

vcs/git/install

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-command -v git >/dev/null && command -v hub >/dev/null && exit
-
 case "$OSTYPE" in
     darwin*)
         brew install git hub
@@ -11,8 +9,10 @@ case "$OSTYPE" in
             sudo pacman --needed --noconfirm -S git hub
         elif [[ -f /etc/debian-version ]]; then
             sudo apt-get install -y git
+            if ! command -v hub >/dev/null; then
                 mkdir -p $HOME/builds && cd $HOME/builds
                 git clone https://github.com/github/hub.git && cd hub
                 make install prefix=/usr/local
             fi
+        fi
 esac

vcs/hg/install

@@ -1,14 +1,12 @@
 #!/bin/bash
 
-command -v hg >/dev/null && exit
-
-case "$OSTYPE" in
+case $OSTYPE in
     darwin*)
         brew install mercurial
         ;;
     linux*)
         if [ -f /etc/arch-release ]; then
-            sudo pacman --noconfirm -S mercurial
+            sudo pacman --needed --noconfirm -S mercurial
         elif [ -f /etc/debian-version ]; then
             sudo apt-get -y mercurial
         fi