Merge pull request #491 from yyuu/anaconda-which-ext

Add a default hook for Anaconda to look for original `$PATH`

pyenv.d/which/anaconda.bash

@@ -0,0 +1,112 @@
+# Anaconda comes with binaries of system packages (e.g. `openssl`, `curl`).
+# Creating shims for those binaries will prevent pyenv users to run those
+# commands normally when not using Anaconda.
+#
+# This is a limited edition of https://github.com/yyuu/pyenv-which-ext
+# and it will looks for original `PATH` if there is Anaconda/Miniconda
+# installed and the command name is blacklisted.
+
+conda_exists() {
+  shopt -s nullglob
+  local condas=($(echo "${PYENV_ROOT}/versions/"*"/bin/conda" "${PYENV_ROOT}/versions/"*"/envs/"*"/bin/conda"))
+  shopt -u nullglob
+  [ -n "${condas}" ]
+}
+
+conda_shims() {
+  cat <<EOS
+assistant
+curl
+curl-config
+designer
+fc-cache
+fc-cat
+fc-list
+fc-match
+fc-pattern
+fc-query
+fc-scan
+fc-validate
+freetype-config
+lconvert
+libpng-config
+linguist
+lrelease
+lupdate
+moc
+openssl
+pixeltool
+qcollectiongenerator
+qdbus
+qdbuscpp2xml
+qdbusviewer
+qdbusxml2cpp
+qhelpconverter
+qhelpgenerator
+qmake
+qmlplugindump
+qmlviewer
+qtconfig
+rcc
+redis-benchmark
+redis-check-aof
+redis-check-dump
+redis-cli
+redis-server
+sqlite3
+uic
+xml2-config
+xmlpatterns
+xmlpatternsvalidator
+xslt-config
+xsltproc
+EOS
+}
+
+expand_path() {
+  if [ ! -d "$1" ]; then
+    return 1
+  fi
+
+  local cwd="$(pwd)"
+  cd "$1"
+  pwd
+  cd "$cwd"
+}
+
+remove_from_path() {
+  local path_to_remove="$(expand_path "$1")"
+  local result=""
+
+  if [ -z "$path_to_remove" ]; then
+    echo "${PATH}"
+    return
+  fi
+
+  local paths
+  IFS=: paths=($PATH)
+
+  for path in "${paths[@]}"; do
+    path="$(expand_path "$path" || true)"
+    if [ -n "$path" ] && [ "$path" != "$path_to_remove" ]; then
+      result="${result}${path}:"
+    fi
+  done
+
+  echo "${result%:}"
+}
+
+lookup_from_path() {
+  local command_to_lookup="$1"
+  local original_path="${PATH}"
+  PATH="$(remove_from_path "${PYENV_ROOT}/shims")"
+  local result="$(command -v "$command_to_lookup" || true)"
+  PATH="${original_path}"
+  echo "$result"
+}
+
+if [ -n "$PYENV_COMMAND" ] && [ ! -x "$PYENV_COMMAND_PATH" ]; then
+  if conda_exists && conda_shims | grep -q -x "$PYENV_COMMAND"; then
+    PYENV_COMMAND_PATH="$(lookup_from_path "$PYENV_COMMAND" || true)"
+  fi
+fi