Should not try to find system-site-packages if virtualenv is a conda's environment (#104)

etc/pyenv.d/which/system-site-packages.bash

@@ -5,27 +5,31 @@
 
 if [ ! -x "${PYENV_COMMAND_PATH}" ]; then
   virtualenv_prefix="$(pyenv-virtualenv-prefix 2>/dev/null || true)"
-  if [ -d "${virtualenv_prefix}" ]; then
+  if [ -d "$(pyenv-prefix)" ] && [ -d "${virtualenv_prefix}" ]; then
     unset include_system_site_packages
-    if [ -f "$(pyenv-prefix)/pyvenv.cfg" ]; then
-      # pyvenv
-      if grep -q -i "include-system-site-packages *= *true" "$(pyenv-prefix)/pyvenv.cfg" 1>/dev/null 2>&1; then
-        include_system_site_packages=1
-      fi
+    if [ -f "$(pyenv-prefix)/bin/conda" ]; then
+      : # do nothing for conda's environments
     else
-      # virtualenv
-      shopt -s nullglob
-      no_global_site_packages="$(echo "$(pyenv-prefix)/lib/"*"/no-global-site-packages.txt")"
-      shopt -u nullglob
-      if [ ! -f "${no_global_site_packages}" ]; then
-        include_system_site_packages=1
+      if [ -f "$(pyenv-prefix)/pyvenv.cfg" ]; then
+        # pyvenv
+        if grep -q -i "include-system-site-packages *= *true" "$(pyenv-prefix)/pyvenv.cfg" 1>/dev/null 2>&1; then
+          include_system_site_packages=1
+        fi
+      else
+        # virtualenv
+        shopt -s nullglob
+        no_global_site_packages="$(echo "$(pyenv-prefix)/lib/"*"/no-global-site-packages.txt")"
+        shopt -u nullglob
+        if [ ! -f "${no_global_site_packages}" ]; then
+          include_system_site_packages=1
+        fi
       fi
-    fi
-    if [ -n "${include_system_site_packages}" ]; then
-      # virtualenv is created with `--system-site-packages`
-      virtualenv_command_path="${virtualenv_prefix}/bin/${PYENV_COMMAND_PATH##*/}"
-      if [ -x "${virtualenv_command_path}" ]; then
-        PYENV_COMMAND_PATH="${virtualenv_command_path}"
+      if [ -n "${include_system_site_packages}" ]; then
+        # virtualenv is created with `--system-site-packages`
+        virtualenv_command_path="${virtualenv_prefix}/bin/${PYENV_COMMAND_PATH##*/}"
+        if [ -x "${virtualenv_command_path}" ]; then
+          PYENV_COMMAND_PATH="${virtualenv_command_path}"
+        fi
       fi
     fi
   fi