Merge pull request #680 from dinhnv/pyenv-patched

pyenv promt segment uses $PYENV_VERSION environment variable"

powerlevel9k.zsh-theme

@@ -1379,18 +1379,10 @@ prompt_virtualenv() {
 }
 
 # pyenv: current active python version (with restrictions)
-# More information on pyenv (Python version manager like rbenv and rvm):
-# https://github.com/yyuu/pyenv
-# the prompt parses output of pyenv version and only displays the first word
+# https://github.com/pyenv/pyenv#choosing-the-python-version
 prompt_pyenv() {
-  local pyenv_version="$(pyenv version 2>/dev/null)"
-  pyenv_version="${pyenv_version%% *}"
-  # XXX: The following should return the same as above.
-  # This reads better for devs familiar with sed/awk/grep/cut utilities
-  # Using shell expansion/substitution may hamper future maintainability
-  #local pyenv_version="$(pyenv version 2>/dev/null | head -n1 | cut -d' ' -f1)"
-  if [[ -n "$pyenv_version" && "$pyenv_version" != "system" ]]; then
-    "$1_prompt_segment" "$0" "$2" "blue" "$DEFAULT_COLOR" "$pyenv_version" 'PYTHON_ICON'
+  if [[ -n "$PYENV_VERSION" ]]; then
+    "$1_prompt_segment" "$0" "$2" "blue" "$DEFAULT_COLOR" "$PYENV_VERSION" 'PYTHON_ICON'
   fi
 }