v20140705

README.md

@@ -133,6 +133,14 @@ You can set certain environment variables to control the pyenv-virtualenv.
 
 ## Version History
 
+#### 20140705
+
+ * Display information on auto-(de)?activation
+ * Support manual (de)?activation with auto-activation enabled (#32, #34)
+ * Exit as error when (de)?activation failed
+ * Use https://bootstrap.pypa.io/ to install setuptools and pip
+ * Create backup of original virtualenv within `$(pyenv root)/versions` when `--upgrade`
+
 #### 20140615
 
  * Fix incompatibility issue of `pyenv activate` and `pyenv deactivate` (#26)

bin/pyenv-sh-activate

@@ -14,16 +14,32 @@
 set -e
 [ -n "$PYENV_DEBUG" ] && set -x
 
-# Provide pyenv completions
-if [ "$1" = "--complete" ]; then
-  echo --unset
-  exec pyenv-virtualenvs --bare
-fi
+unset NOERROR
+unset VERBOSE
 
-if [ "$1" = "--unset" ]; then
-  echo "pyenv deactivate"
-  exit
-fi
+while [ $# -gt 0 ]; do
+  case "$1" in
+  "--complete" )
+    # Provide pyenv completions
+    echo --unset
+    exec pyenv-virtualenvs --bare
+    ;;
+  "--no-error" )
+    NOERROR=1
+    ;;
+  "--unset" )
+    echo "pyenv deactivate"
+    exit
+    ;;
+  "--verbose" )
+    VERBOSE=1
+    ;;
+  * )
+    break
+    ;;
+  esac
+  shift 1
+done
 
 versions=("$@")
 if [ -z "$versions" ]; then
@@ -40,11 +56,16 @@ if [ -z "${PYENV_VIRTUALENV_INIT}" ]; then
 fi
 
 if [ "${#versions[@]}" -gt 1 ]; then
-  echo "pyenv-virtualenv: cannot activate multiple versions at once: ${versions[@]}" 1>&2
+  [ -n "$NOERROR" ] || echo "pyenv-virtualenv: cannot activate multiple versions at once: ${versions[@]}" 1>&2
+  echo "false"
   exit 1
 fi
 
-pyenv-virtualenv-prefix "${versions}" 1>/dev/null
+if ! pyenv-virtualenv-prefix "${versions}" 1>/dev/null 2>&1; then
+  [ -n "$NOERROR" ] || echo "pyenv-virtualenv: version \`${versions}' is not a virtualenv" 1>&2
+  echo "false"
+  exit 1
+fi
 
 shell="$(basename "${PYENV_SHELL:-$SHELL}")"
 case "$shell" in
@@ -70,21 +91,28 @@ if [ -f "$profile" ] && grep -q 'pyenv init -' "$profile" && ! grep -q 'pyenv vi
   pyenv-virtualenv-init >&2 || true
 fi
 
+if [ -n "$VERBOSE" ]; then
+  echo "pyenv-virtualenv: activate ${versions}" 1>&2
+fi
+
 if [ -z "$no_shell" ]; then
   echo "pyenv shell \"${versions}\";"
 fi
 
+prefix="$(pyenv-prefix "${versions}")"
 case "$shell" in
 fish )
   cat <<EOS
 set -e PYENV_DEACTIVATE;
-. "$(pyenv-prefix "${versions}")/bin/activate.fish";
+setenv PYENV_ACTIVATE "${prefix}";
+. "${prefix}/bin/activate.fish";
 EOS
  ;;
 *    )
   cat <<EOS
 unset PYENV_DEACTIVATE;
-source "$(pyenv-prefix "${versions}")/bin/activate";
+export PYENV_ACTIVATE="${prefix}";
+source "${prefix}/bin/activate";
 EOS
   ;;
 esac

bin/pyenv-sh-deactivate

@@ -9,28 +9,74 @@
 set -e
 [ -n "$PYENV_DEBUG" ] && set -x
 
+unset NOERROR
+unset VERBOSE
+
+while [ $# -gt 0 ]; do
+  case "$1" in
+  "--no-error" )
+    NOERROR=1
+    ;;
+  "--verbose" )
+    VERBOSE=1
+    ;;
+  * )
+    break
+    ;;
+  esac
+  shift 1
+done
+
 shell="$(basename "${PYENV_SHELL:-$SHELL}")"
 case "$shell" in
 fish )
-  cat <<EOS
-if functions -q deactivate
-  setenv PYENV_DEACTIVATE "\$VIRTUAL_ENV";
-  deactivate;
-end;
-EOS
+  echo "if functions -q deactivate;"
   ;;
 *    )
-  cat <<EOS
-if declare -f deactivate 1>/dev/null 2>&1; then
-  export PYENV_DEACTIVATE="\$VIRTUAL_ENV";
-  deactivate;
-fi;
-EOS
+  echo "if declare -f deactivate 1>/dev/null 2>&1; then"
   ;;
 esac
 
+if [ -n "$VERBOSE" ]; then
+  echo "  echo \"pyenv-virtualenv: deactivate ${PYENV_ACTIVATE##*/}\" 1>&2;"
+fi
+
 if [ -z "${PYENV_VIRTUALENV_INIT}" ]; then
   # Backward compatibility issue
   # https://github.com/yyuu/pyenv-virtualenv/issues/26
-  echo "pyenv shell --unset;"
+  echo "  pyenv shell --unset;"
 fi
+
+case "$shell" in
+fish )
+  cat <<EOS
+  setenv PYENV_DEACTIVATE "$PYENV_ACTIVATE";
+  set -e PYENV_ACTIVATE;
+  deactivate;
+else;
+EOS
+  ;;
+*    )
+  cat <<EOS
+  export PYENV_DEACTIVATE="$PYENV_ACTIVATE";
+  unset PYENV_ACTIVATE;
+  deactivate;
+else
+EOS
+  ;;
+esac
+
+if [ -z "$NOERROR" ]; then
+  echo "  echo \"pyenv-virtualenv: no virtualenv has been activated.\" 1>&2;"
+fi
+
+echo "  false;"
+
+case "$shell" in
+fish )
+  echo "end;"
+  ;;
+*    )
+  echo "fi;"
+  ;;
+esac

bin/pyenv-virtualenv

@@ -9,7 +9,7 @@
 #   -f/--force       Install even if the version appears to be installed already
 #
 
-PYENV_VIRTUALENV_VERSION="20140615"
+PYENV_VIRTUALENV_VERSION="20140705"
 
 set -e
 [ -n "$PYENV_DEBUG" ] && set -x

bin/pyenv-virtualenv-init

@@ -75,18 +75,21 @@ case "$shell" in
 fish )
   cat <<EOS
 function _pyenv_virtualenv_hook --on-event fish_prompt;
-  if [ -n "\$VIRTUAL_ENV" ]
+  if [ -n "\$PYENV_ACTIVATE" ]
     if [ (pyenv version-name) = "system" ]
-      eval (pyenv sh-deactivate); or true
+      pyenv deactivate --no-error --verbose
       return 0
     end
-    if [ "\$VIRTUAL_ENV" != (pyenv prefix) ]
-      eval (pyenv sh-deactivate); or true
-      eval (pyenv sh-activate 2>/dev/null); or true
+    if [ "\$PYENV_ACTIVATE" != (pyenv prefix) ]
+      if pyenv deactivate --no-error --verbose
+        pyenv activate --no-error --verbose; or set -e PYENV_DEACTIVATE
+      else
+        pyenv activate --no-error --verbose
+      end
     end
   else
-    if [ "\$PYENV_DEACTIVATE" != (pyenv prefix) ]
-      eval (pyenv sh-activate 2>/dev/null); or true
+    if [ -z "\$VIRTUAL_ENV" ]; and [ "\$PYENV_DEACTIVATE" != (pyenv prefix) ]
+      pyenv activate --no-error --verbose
     end
   end
 end
@@ -106,18 +109,21 @@ esac
 
 if [[ "$shell" != "fish" ]]; then
   cat <<EOS
-  if [ -n "\$VIRTUAL_ENV" ]; then
+  if [ -n "\$PYENV_ACTIVATE" ]; then
     if [ "x\`pyenv version-name\`" = "xsystem" ]; then
-      pyenv deactivate || true
+      pyenv deactivate --no-error --verbose
       return 0
     fi
-    if [ "x\$VIRTUAL_ENV" != "x\`pyenv prefix\`" ]; then
-      pyenv deactivate || true
-      pyenv activate 2>/dev/null || true
+    if [ "x\$PYENV_ACTIVATE" != "x\`pyenv prefix\`" ]; then
+      if pyenv deactivate --no-error --verbose; then
+        pyenv activate --no-error --verbose || unset PYENV_DEACTIVATE
+      else
+        pyenv activate --no-error --verbose
+      fi
     fi
   else
-    if [ "x\$PYENV_DEACTIVATE" != "x\`pyenv prefix\`" ]; then
-      pyenv activate 2>/dev/null || true
+    if [ -z "\$VIRTUAL_ENV" ] && [ "x\$PYENV_DEACTIVATE" != "x\`pyenv prefix\`" ]; then
+      pyenv activate --no-error --verbose
     fi
   fi
 };

bin/pyenv-virtualenv-prefix

@@ -32,6 +32,10 @@ base_prefix() { # pyvenv
 
 VIRTUALENV_PREFIX_PATHS=()
 for version in "${versions[@]}"; do
+  if [ "$version" = "system" ]; then
+    echo "pyenv-virtualenv: version \`${version}' is not a virtualenv" 1>&2
+    exit 1
+  fi
   PREFIX="$(pyenv-prefix "${version}")"
   if [ -f "${PREFIX}/bin/activate" ]; then
     VIRTUALENV_PREFIX_PATH="$(real_prefix "${version}" || base_prefix "${version}" || true)"

test/activate.bats

@@ -23,6 +23,29 @@ setup() {
   assert_success
   assert_output <<EOS
 unset PYENV_DEACTIVATE;
+export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv";
+source "${PYENV_ROOT}/versions/venv/bin/activate";
+EOS
+}
+
+@test "activate virtualenv from current version (verbose)" {
+  export PYENV_VIRTUALENV_INIT=1
+
+  stub pyenv-version-name "echo venv"
+  stub pyenv-virtualenv-prefix "venv : echo \"${PYENV_ROOT}/versions/venv\""
+  stub pyenv-prefix "venv : echo \"${PYENV_ROOT}/versions/venv\""
+
+  PYENV_SHELL="bash" PYENV_VERSION="venv" run pyenv-sh-activate --verbose
+
+  unstub pyenv-version-name
+  unstub pyenv-virtualenv-prefix
+  unstub pyenv-prefix
+
+  assert_success
+  assert_output <<EOS
+pyenv-virtualenv: activate venv
+unset PYENV_DEACTIVATE;
+export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv";
 source "${PYENV_ROOT}/versions/venv/bin/activate";
 EOS
 }
@@ -44,6 +67,7 @@ EOS
   assert_output <<EOS
 pyenv shell "venv";
 unset PYENV_DEACTIVATE;
+export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv";
 source "${PYENV_ROOT}/versions/venv/bin/activate";
 EOS
 }
@@ -64,6 +88,7 @@ EOS
   assert_success
   assert_output <<EOS
 set -e PYENV_DEACTIVATE;
+setenv PYENV_ACTIVATE "${PYENV_ROOT}/versions/venv";
 . "${PYENV_ROOT}/versions/venv/bin/activate.fish";
 EOS
 }
@@ -85,6 +110,7 @@ EOS
   assert_output <<EOS
 pyenv shell "venv";
 set -e PYENV_DEACTIVATE;
+setenv PYENV_ACTIVATE "${PYENV_ROOT}/versions/venv";
 . "${PYENV_ROOT}/versions/venv/bin/activate.fish";
 EOS
 }
@@ -104,6 +130,7 @@ EOS
   assert_output <<EOS
 pyenv shell "venv27";
 unset PYENV_DEACTIVATE;
+export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv27";
 source "${PYENV_ROOT}/versions/venv27/bin/activate";
 EOS
 }
@@ -123,6 +150,7 @@ EOS
   assert_output <<EOS
 pyenv shell "venv27";
 unset PYENV_DEACTIVATE;
+export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv27";
 source "${PYENV_ROOT}/versions/venv27/bin/activate";
 EOS
 }
@@ -144,6 +172,23 @@ EOS
   unstub pyenv-virtualenv-prefix
 
   assert_failure
+  assert_output <<EOS
+pyenv-virtualenv: version \`3.3.3' is not a virtualenv
+false
+EOS
+}
+
+@test "should fail if the version is not a virtualenv (no-error)" {
+  stub pyenv-virtualenv-prefix "3.3.3 : false"
+
+  run pyenv-sh-activate --no-error "3.3.3"
+
+  unstub pyenv-virtualenv-prefix
+
+  assert_failure
+  assert_output <<EOS
+false
+EOS
 }
 
 @test "should fail if there are multiple versions" {
@@ -152,6 +197,16 @@ EOS
   assert_failure
   assert_output <<EOS
 pyenv-virtualenv: cannot activate multiple versions at once: venv venv27
+false
+EOS
+}
+
+@test "should fail if there are multiple versions (no-error)" {
+  run pyenv-sh-activate --no-error "venv" "venv27"
+
+  assert_failure
+  assert_output <<EOS
+false
 EOS
 }
 

test/deactivate.bats

@@ -8,62 +8,175 @@ setup() {
 
 @test "deactivate virtualenv" {
   export PYENV_VIRTUALENV_INIT=1
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
 
   PYENV_SHELL="bash" run pyenv-sh-deactivate
 
   assert_success
   assert_output <<EOS
 if declare -f deactivate 1>/dev/null 2>&1; then
-  export PYENV_DEACTIVATE="\$VIRTUAL_ENV";
+  export PYENV_DEACTIVATE="$PYENV_ACTIVATE";
+  unset PYENV_ACTIVATE;
   deactivate;
+else
+  echo "pyenv-virtualenv: no virtualenv has been activated." 1>&2;
+  false;
+fi;
+EOS
+}
+
+@test "deactivate virtualenv (verbose)" {
+  export PYENV_VIRTUALENV_INIT=1
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
+
+  PYENV_SHELL="bash" run pyenv-sh-deactivate --verbose
+
+  assert_success
+  assert_output <<EOS
+if declare -f deactivate 1>/dev/null 2>&1; then
+  echo "pyenv-virtualenv: deactivate venv" 1>&2;
+  export PYENV_DEACTIVATE="$PYENV_ACTIVATE";
+  unset PYENV_ACTIVATE;
+  deactivate;
+else
+  echo "pyenv-virtualenv: no virtualenv has been activated." 1>&2;
+  false;
+fi;
+EOS
+}
+
+@test "deactivate virtualenv (no-error)" {
+  export PYENV_VIRTUALENV_INIT=1
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
+
+  PYENV_SHELL="bash" run pyenv-sh-deactivate --no-error
+
+  assert_success
+  assert_output <<EOS
+if declare -f deactivate 1>/dev/null 2>&1; then
+  export PYENV_DEACTIVATE="$PYENV_ACTIVATE";
+  unset PYENV_ACTIVATE;
+  deactivate;
+else
+  false;
 fi;
 EOS
 }
 
 @test "deactivate virtualenv (without pyenv-virtualenv-init)" {
   export PYENV_VIRTUALENV_INIT=
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
 
   PYENV_SHELL="bash" run pyenv-sh-deactivate
 
   assert_success
   assert_output <<EOS
 if declare -f deactivate 1>/dev/null 2>&1; then
-  export PYENV_DEACTIVATE="\$VIRTUAL_ENV";
+  pyenv shell --unset;
+  export PYENV_DEACTIVATE="$PYENV_ACTIVATE";
+  unset PYENV_ACTIVATE;
   deactivate;
+else
+  echo "pyenv-virtualenv: no virtualenv has been activated." 1>&2;
+  false;
+fi;
+EOS
+}
+
+@test "deactivate virtualenv (without pyenv-virtualenv-init) (no-error)" {
+  export PYENV_VIRTUALENV_INIT=
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
+
+  PYENV_SHELL="bash" run pyenv-sh-deactivate --no-error
+
+  assert_success
+  assert_output <<EOS
+if declare -f deactivate 1>/dev/null 2>&1; then
+  pyenv shell --unset;
+  export PYENV_DEACTIVATE="$PYENV_ACTIVATE";
+  unset PYENV_ACTIVATE;
+  deactivate;
+else
+  false;
 fi;
-pyenv shell --unset;
 EOS
 }
 
 @test "deactivate virtualenv (fish)" {
   export PYENV_VIRTUALENV_INIT=1
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
 
   PYENV_SHELL="fish" run pyenv-sh-deactivate
 
   assert_success
   assert_output <<EOS
-if functions -q deactivate
-  setenv PYENV_DEACTIVATE "\$VIRTUAL_ENV";
+if functions -q deactivate;
+  setenv PYENV_DEACTIVATE "$PYENV_ACTIVATE";
+  set -e PYENV_ACTIVATE;
   deactivate;
+else;
+  echo "pyenv-virtualenv: no virtualenv has been activated." 1>&2;
+  false;
+end;
+EOS
+}
+
+@test "deactivate virtualenv (fish) (no-error)" {
+  export PYENV_VIRTUALENV_INIT=1
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
+
+  PYENV_SHELL="fish" run pyenv-sh-deactivate --no-error
+
+  assert_success
+  assert_output <<EOS
+if functions -q deactivate;
+  setenv PYENV_DEACTIVATE "$PYENV_ACTIVATE";
+  set -e PYENV_ACTIVATE;
+  deactivate;
+else;
+  false;
 end;
 EOS
 }
 
 @test "deactivate virtualenv (fish) (without pyenv-virtualenv-init)" {
   export PYENV_VIRTUALENV_INIT=
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
 
   PYENV_SHELL="fish" run pyenv-sh-deactivate
 
   assert_success
   assert_output <<EOS
-if functions -q deactivate
-  setenv PYENV_DEACTIVATE "\$VIRTUAL_ENV";
+if functions -q deactivate;
+  pyenv shell --unset;
+  setenv PYENV_DEACTIVATE "$PYENV_ACTIVATE";
+  set -e PYENV_ACTIVATE;
   deactivate;
+else;
+  echo "pyenv-virtualenv: no virtualenv has been activated." 1>&2;
+  false;
 end;
-pyenv shell --unset;
 EOS
 }
 
+@test "deactivate virtualenv (fish) (without pyenv-virtualenv-init) (no-error)" {
+  export PYENV_VIRTUALENV_INIT=
+  export PYENV_ACTIVATE="${PYENV_ROOT}/versions/venv"
+
+  PYENV_SHELL="fish" run pyenv-sh-deactivate --no-error
+
+  assert_success
+  assert_output <<EOS
+if functions -q deactivate;
+  pyenv shell --unset;
+  setenv PYENV_DEACTIVATE "$PYENV_ACTIVATE";
+  set -e PYENV_ACTIVATE;
+  deactivate;
+else;
+  false;
+end;
+EOS
+}
 @test "should fail if deactivate is invoked as a command" {
   run pyenv-deactivate
 

test/init.bats

@@ -31,18 +31,21 @@ load test_helper
   assert_output <<EOS
 export PYENV_VIRTUALENV_INIT=1;
 _pyenv_virtualenv_hook() {
-  if [ -n "\$VIRTUAL_ENV" ]; then
+  if [ -n "\$PYENV_ACTIVATE" ]; then
     if [ "x\`pyenv version-name\`" = "xsystem" ]; then
-      pyenv deactivate || true
+      pyenv deactivate --no-error --verbose
       return 0
     fi
-    if [ "x\$VIRTUAL_ENV" != "x\`pyenv prefix\`" ]; then
-      pyenv deactivate || true
-      pyenv activate 2>/dev/null || true
+    if [ "x\$PYENV_ACTIVATE" != "x\`pyenv prefix\`" ]; then
+      if pyenv deactivate --no-error --verbose; then
+        pyenv activate --no-error --verbose || unset PYENV_DEACTIVATE
+      else
+        pyenv activate --no-error --verbose
+      fi
     fi
   else
-    if [ "x\$PYENV_DEACTIVATE" != "x\`pyenv prefix\`" ]; then
-      pyenv activate 2>/dev/null || true
+    if [ -z "\$VIRTUAL_ENV" ] && [ "x\$PYENV_DEACTIVATE" != "x\`pyenv prefix\`" ]; then
+      pyenv activate --no-error --verbose
     fi
   fi
 };
@@ -58,18 +61,21 @@ EOS
   assert_output <<EOS
 setenv PYENV_VIRTUALENV_INIT 1;
 function _pyenv_virtualenv_hook --on-event fish_prompt;
-  if [ -n "\$VIRTUAL_ENV" ]
+  if [ -n "\$PYENV_ACTIVATE" ]
     if [ (pyenv version-name) = "system" ]
-      eval (pyenv sh-deactivate); or true
+      pyenv deactivate --no-error --verbose
       return 0
     end
-    if [ "\$VIRTUAL_ENV" != (pyenv prefix) ]
-      eval (pyenv sh-deactivate); or true
-      eval (pyenv sh-activate 2>/dev/null); or true
+    if [ "\$PYENV_ACTIVATE" != (pyenv prefix) ]
+      if pyenv deactivate --no-error --verbose
+        pyenv activate --no-error --verbose; or set -e PYENV_DEACTIVATE
+      else
+        pyenv activate --no-error --verbose
+      end
     end
   else
-    if [ "\$PYENV_DEACTIVATE" != (pyenv prefix) ]
-      eval (pyenv sh-activate 2>/dev/null); or true
+    if [ -z "\$VIRTUAL_ENV" ]; and [ "\$PYENV_DEACTIVATE" != (pyenv prefix) ]
+      pyenv activate --no-error --verbose
     end
   end
 end
@@ -82,18 +88,21 @@ EOS
   assert_output <<EOS
 export PYENV_VIRTUALENV_INIT=1;
 _pyenv_virtualenv_hook() {
-  if [ -n "\$VIRTUAL_ENV" ]; then
+  if [ -n "\$PYENV_ACTIVATE" ]; then
     if [ "x\`pyenv version-name\`" = "xsystem" ]; then
-      pyenv deactivate || true
+      pyenv deactivate --no-error --verbose
       return 0
     fi
-    if [ "x\$VIRTUAL_ENV" != "x\`pyenv prefix\`" ]; then
-      pyenv deactivate || true
-      pyenv activate 2>/dev/null || true
+    if [ "x\$PYENV_ACTIVATE" != "x\`pyenv prefix\`" ]; then
+      if pyenv deactivate --no-error --verbose; then
+        pyenv activate --no-error --verbose || unset PYENV_DEACTIVATE
+      else
+        pyenv activate --no-error --verbose
+      fi
     fi
   else
-    if [ "x\$PYENV_DEACTIVATE" != "x\`pyenv prefix\`" ]; then
-      pyenv activate 2>/dev/null || true
+    if [ -z "\$VIRTUAL_ENV" ] && [ "x\$PYENV_DEACTIVATE" != "x\`pyenv prefix\`" ]; then
+      pyenv activate --no-error --verbose
     fi
   fi
 };

test/version.bats

@@ -4,7 +4,7 @@ load test_helper
 
 setup() {
   export PYENV_ROOT="${TMP}/pyenv"
-  export PYENV_VIRTUALENV_VERSION="20140615"
+  export PYENV_VIRTUALENV_VERSION="20140705"
 }
 
 @test "display virtualenv version" {

test/virtualenv-prefix.bats

@@ -102,6 +102,19 @@ ${PYENV_ROOT}/versions/3.3.3:${PYENV_ROOT}/versions/3.4.0
 OUT
 }
 
+@test "should fail if the version is the system" {
+  stub pyenv-version-name "echo system"
+
+  PYENV_VERSION="system" run pyenv-virtualenv-prefix
+
+  unstub pyenv-version-name
+
+  assert_failure
+  assert_output <<OUT
+pyenv-virtualenv: version \`system' is not a virtualenv
+OUT
+}
+
 @test "should fail if the version is not a virtualenv" {
   stub pyenv-version-name "echo 3.4.0"
   stub pyenv-prefix "3.4.0 : echo \"${PYENV_ROOT}/versions/3.4.0\""