diff --git a/.gitmodules b/.gitmodules
index f91dc77..bde5c19 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,12 +1,3 @@
-[submodule "ngx_openresty"]
-	path = dependencies/openresty
-	url = https://github.com/openresty/ngx_openresty
 [submodule "sh-realpath"]
 	path = dependencies/sh-realpath
 	url = https://github.com/mkropat/sh-realpath
-[submodule "lua.vm.js"]
-	path = dependencies/lua.vm.js
-	url = https://github.com/kripken/lua.vm.js.git
-[submodule "libev"]
-	path = dependencies/libev
-	url = https://github.com/enki/libev.git
diff --git a/bin/install b/bin/install
index 5408eaf..d639a9b 100755
--- a/bin/install
+++ b/bin/install
@@ -14,23 +14,15 @@ do
       cosy_temp="${i#*=}"
       cosy_temp="${cosy_temp%/}"
     ;;
-    -l=*|--lua=*)
-      lua_version="${i#*=}"
-      lua_version="${lua_version%/}"
-    ;;
-    -m|--minimal)
-      minimal=true
-    ;;
     -i|--in-ci)
       in_ci=true
     ;;
     *)
       echo "Usage: "
-      echo "  install [--prefix=PREFIX] [--temp=TEMP_DIR] [--lua=LUA_VERSION] [--minimal] [--in-ci]"
+      echo "  install [--prefix=PREFIX] [--temp=TEMP_DIR] [--in-ci]"
       exit 1;
     ;;
   esac
-  shift
 done
 
 # Useful variables:
@@ -39,7 +31,6 @@ currentwd=$(dirname "${currentwd}")
 cosy_temp=${cosy_temp:-$(mktemp -d 2>/dev/null || mktemp -d -t cosy)}
 cosy_log="${cosy_temp}/install.log"
 cosy_prefix=${cosy_prefix:-${cosy_temp}}
-lua_version=${lua_version:-5.2}
 parallel=$(nproc 2> /dev/null || sysctl -n hw.ncpu 2> /dev/null)
 
 { # Detect if apt-get or brew is available:
@@ -102,7 +93,7 @@ if command -v git >> "${cosy_log}" 2>&1; then
   popd >> "${cosy_log}" 2>&1
   if [ "${version}" = "${oldversion}" ]; then
     echo -e "Environment is already installed at version ${green}${oldversion}${nc}."
-    return
+    exit 0
   fi
 fi
 
@@ -136,7 +127,8 @@ cosy_temp=$(realpath "${cosy_temp}")
                                    perl build-essential wget python python-pip \
                                    libc6-dev libssl-dev \
                                    libreadline-dev libncurses5-dev libpcre3-dev \
-                                   redis-server imagemagick npm caca-utils libc-bin
+                                   redis-server imagemagick npm caca-utils libc-bin \
+                                   postgresql
         ;;
       "Darwin")
         HOMEBREW_PREFIX=$(brew config | grep "HOMEBREW_PREFIX" | tr -d ' \t' | cut -d ":" -f 2)
@@ -145,7 +137,7 @@ cosy_temp=$(realpath "${cosy_temp}")
         export LD_LIBRARY_PATH="${HOMEBREW_PREFIX}/lib:${LD_LIBRARY_PATH}"
         export DYLD_LIBRARY_PATH="${HOMEBREW_PREFIX}/lib:${DYLD_LIBRARY_PATH}"
         brew update
-        brew install openssl pcre python redis imagemagick wget npm libcaca
+        brew install openssl pcre python redis imagemagick wget npm libcaca postgresql
         brew link --force openssl
         ;;
       *)
@@ -161,26 +153,11 @@ cosy_temp=$(realpath "${cosy_temp}")
   export LD_LIBRARY_PATH="${cosy_prefix}/lib:${LD_LIBRARY_PATH}"
 }
 
-# Install libev:
-{
-  export CC=clang
-  echo -n "Installing libev... "
-  (
-    cd "${currentwd}/dependencies/libev"
-    ./configure --prefix="${cosy_prefix}"
-    make
-    ${sudo} make install
-    make clean
-  ) >> "${cosy_log}" 2>&1 \
-    && echo -e "${green}success${nc}" \
-    || echo -e "${red}failure${nc}"
-}
-
 # Install lua, luarocks and packages:
 {
   export CC=clang
-  echo -n "Installing lua ${lua_version} and luarocks... "
-  if pip list | grep "hererocks" >> "${cosy_temp}" 2>&1; then
+  echo -n "Installing luajit and luarocks... "
+  if pip list | grep "hererocks" >> "${cosy_log}" 2>&1; then
     hererocks="hererocks"
   else
     ${sudo} pip install --root="${cosy_prefix}" hererocks
@@ -189,7 +166,7 @@ cosy_temp=$(realpath "${cosy_temp}")
     PYTHONPATH=$(dirname "${path}"):"${PYTHONPATH}"
     hererocks="${cosy_prefix}/usr/local/bin/hererocks"
   fi >> "${cosy_log}" 2>&1
-  ${sudo} "${hererocks}" "${cosy_prefix}" -r^ --lua="${lua_version}" \
+  ${sudo} "${hererocks}" "${cosy_prefix}" -r^ --luajit=2.1 \
     >> "${cosy_log}" 2>&1 \
     && echo -e "${green}success${nc}" \
     || echo -e "${red}failure${nc}"
@@ -201,8 +178,6 @@ cosy_temp=$(realpath "${cosy_temp}")
     luacov-coveralls
     luafilesystem
     luasec
-    lustache
-    serpent
   )
   for dependency in ${dependencies[*]}; do
     if "${cosy_prefix}/bin/luarocks" list --porcelain \
@@ -218,30 +193,6 @@ cosy_temp=$(realpath "${cosy_temp}")
        || echo -e "${red}failure${nc}"
     fi
   done
-  echo -n "Installing lua 5.1 and luarocks for nginx... "
-  ${sudo} "${hererocks}" "${cosy_temp}/lua_install" -r^ --lua="5.1" \
-    >> "${cosy_log}" 2>&1 \
-    && echo -e "${green}success${nc}" \
-    || echo -e "${red}failure${nc}"
-  nginx_dependencies=(
-    lua-cjson
-    lua-resty-http
-    md5
-  )
-  for dependency in ${nginx_dependencies[*]}; do
-    if "${cosy_temp}/lua_install/bin/luarocks" list --tree="${cosy_prefix}" --porcelain \
-        >> "${cosy_log}" 2>&1 \
-        | grep --silent "${dependency}"; then
-      echo "  Not installing ${dependency} as it is already installed."
-    else
-      echo -n "  Installing ${dependency} as it is not installed... "
-      # shellcheck disable=SC2086
-      ${sudo} "${cosy_temp}/lua_install/bin/luarocks" install --tree="${cosy_prefix}" "${dependency}" \
-        >> "${cosy_log}" 2>&1 \
-       && echo -e "${green}success${nc}" \
-       || echo -e "${red}failure${nc}"
-    fi
-  done
   echo -n "Installing sh-realpath... "
   ( ${sudo} cp "${currentwd}/dependencies/sh-realpath/realpath.sh" "${cosy_prefix}/bin/"
     ${sudo} chmod a+x "${cosy_prefix}/bin/realpath.sh"
@@ -250,75 +201,6 @@ cosy_temp=$(realpath "${cosy_temp}")
     || echo -e "${red}failure${nc}"
 }
 
-if [ ! -z "${minimal+x}" ]; then
-  echo -e "Skipping openresty and web dependencies as minimal install is set."
-  return
-fi
-
-# Install web dependencies:
-(
-  cd "${currentwd}" || exit 1
-  web_dependencies=(
-    bootbox
-    bootstrap3
-    d3
-    font-awesome
-    jquery
-    jquery-locationpicker
-    sjcl
-  )
-  rm -rf node_modules
-  echo "Installing web dependencies... "
-  for dependency in ${web_dependencies[*]}; do
-    echo -n "  Installing ${dependency}... "
-    npm install "${dependency}" >> "${cosy_log}" 2>&1 \
-      && echo -e "${green}success${nc}" \
-      || echo -e "${red}failure${nc}"
-  done
-  ${sudo} mkdir -p "${cosy_prefix}/share/cosy/www"
-  ${sudo} mkdir -p "${cosy_prefix}/share/cosy/www/js"
-  ${sudo} mkdir -p "${cosy_prefix}/share/cosy/www/css"
-  ${sudo} mkdir -p "${cosy_prefix}/share/cosy/www/fonts"
-  for module in node_modules/*; do
-    name=$(basename "${module}")
-    ${sudo} cp "${module}/dist/"*.js    "${cosy_prefix}/share/cosy/www/js/"    2> /dev/null || true
-    ${sudo} cp "${module}/dist/"*.map   "${cosy_prefix}/share/cosy/www/js/"    2> /dev/null || true
-    ${sudo} cp "${module}/dist/js/"*    "${cosy_prefix}/share/cosy/www/js/"    2> /dev/null || true
-    ${sudo} cp "${module}/dist/css/"*   "${cosy_prefix}/share/cosy/www/css/"   2> /dev/null || true
-    ${sudo} cp "${module}/dist/fonts/"* "${cosy_prefix}/share/cosy/www/fonts/" 2> /dev/null || true
-    ${sudo} cp "${module}/js/"*         "${cosy_prefix}/share/cosy/www/js/"    2> /dev/null || true
-    ${sudo} cp "${module}/css/"*        "${cosy_prefix}/share/cosy/www/css/"   2> /dev/null || true
-    ${sudo} cp "${module}/fonts/"*      "${cosy_prefix}/share/cosy/www/fonts/" 2> /dev/null || true
-    ${sudo} cp "${module}/${name}"*.js  "${cosy_prefix}/share/cosy/www/js/"    2> /dev/null || true
-    ${sudo} cp "${module}/${name}"*.map "${cosy_prefix}/share/cosy/www/js/"    2> /dev/null || true
-    ${sudo} cp "${module}/${name}"*.css "${cosy_prefix}/share/cosy/www/css/"   2> /dev/null || true
-  done
-  ${sudo} rm -rf node_modules
-  ${sudo} cp "dependencies/lua.vm.js/dist/lua.vm.js" "${cosy_prefix}/share/cosy/www/js/"
-)
-
-# Install openresty:
-echo -n "Installing openresty... "
-(
-  cd "${currentwd}/dependencies/openresty" || exit 1
-  make
-  for dir in openresty-*; do
-    if [ -d "${dir}" ]; then
-      cd "${dir}" || exit 1
-      ./configure --prefix="${cosy_prefix}" \
-                  --without-lua51 \
-                  --with-ipv6 \
-                  --with-pcre-jit
-      make -j"${parallel}"
-      ${sudo} make install
-      make clean
-      break
-    fi
-  done
-) >> "${cosy_log}" 2>&1 \
-  && echo -e "${green}success${nc}" \
-  || echo -e "${red}failure${nc}"
-
 (
   cd "${currentwd}" || exit 1
   git rev-parse HEAD > "${cosy_temp}/environment.version"
diff --git a/dependencies/libev b/dependencies/libev
deleted file mode 160000
index e3a3843..0000000
--- a/dependencies/libev
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit e3a384312f505e7c20afb7bcbff47a1be1ac6eed
diff --git a/dependencies/lua.vm.js b/dependencies/lua.vm.js
deleted file mode 160000
index 4430a0d..0000000
--- a/dependencies/lua.vm.js
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 4430a0d85ac70e733cc3e24b21ee3534d0963765
diff --git a/dependencies/openresty b/dependencies/openresty
deleted file mode 160000
index 5f7f678..0000000
--- a/dependencies/openresty
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 5f7f6788765f766fb2ad4b903258a650844416f5