diff --git a/libexec/pyenv b/libexec/pyenv
index a4b0c3ae..40c763d2 100755
--- a/libexec/pyenv
+++ b/libexec/pyenv
@@ -76,23 +76,27 @@ export PYENV_DIR
 
 shopt -s nullglob
 
-bin_path="$(abs_dirname "$0")"
-for plugin_bin in "${bin_path%/*}"/plugins/*/bin; do
+PYENV_INSTALL_PATH="$(abs_dirname "$0")"
+PYENV_INSTALL_PATH="${PYENV_INSTALL_PATH%/*}"
+
+export PYENV_INSTALL_PATH
+
+for plugin_bin in "${PYENV_INSTALL_PATH}"/plugins/*/bin; do
   PATH="${plugin_bin}:${PATH}"
 done
 # PYENV_ROOT can be set to anything, so it may happen to be equal to the base path above,
 # resulting in duplicate PATH entries
-if [ "${bin_path%/*}" != "$PYENV_ROOT" ]; then
+if [ "${PYENV_INSTALL_PATH}" != "$PYENV_ROOT" ]; then
   for plugin_bin in "${PYENV_ROOT}"/plugins/*/bin; do
     PATH="${plugin_bin}:${PATH}"
   done
 fi
-export PATH="${bin_path}:${PATH}"
+export PATH="${PYENV_INSTALL_PATH}/libexec:${PATH}"
 
 PYENV_HOOK_PATH="${PYENV_HOOK_PATH}:${PYENV_ROOT}/pyenv.d"
-if [ "${bin_path%/*}" != "$PYENV_ROOT" ]; then
+if [ "${PYENV_INSTALL_PATH}" != "$PYENV_ROOT" ]; then
   # Add pyenv's own `pyenv.d` unless pyenv was cloned to PYENV_ROOT
-  PYENV_HOOK_PATH="${PYENV_HOOK_PATH}:${bin_path%/*}/pyenv.d"
+  PYENV_HOOK_PATH="${PYENV_HOOK_PATH}:${PYENV_INSTALL_PATH}/pyenv.d"
 fi
 PYENV_HOOK_PATH="${PYENV_HOOK_PATH}:/usr/etc/pyenv.d:/usr/local/etc/pyenv.d:/etc/pyenv.d:/usr/lib/pyenv/hooks"
 for plugin_hook in "${PYENV_ROOT}/plugins/"*/etc/pyenv.d; do
diff --git a/libexec/pyenv-exec b/libexec/pyenv-exec
index 6ed5ac20..33de574e 100755
--- a/libexec/pyenv-exec
+++ b/libexec/pyenv-exec
@@ -31,6 +31,7 @@ fi
 
 PYENV_COMMAND_PATH="$(pyenv-which "$PYENV_COMMAND")"
 PYENV_BIN_PATH="${PYENV_COMMAND_PATH%/*}"
+
 export PYENV_VERSION
 
 OLDIFS="$IFS"
diff --git a/libexec/pyenv-init b/libexec/pyenv-init
index 6341b655..cff9a557 100755
--- a/libexec/pyenv-init
+++ b/libexec/pyenv-init
@@ -241,7 +241,7 @@ function print_env() {
 }
 
 function print_completion() {
-  completion="${0%/*/*}/completions/pyenv.${shell}"
+  completion="${PYENV_INSTALL_PATH}/completions/pyenv.${shell}"
   if [ -r "$completion" ]; then
     echo "source '$completion'"
   fi
diff --git a/plugins/python-build/bin/pyenv-install b/plugins/python-build/bin/pyenv-install
index 778489b7..68705641 100755
--- a/plugins/python-build/bin/pyenv-install
+++ b/plugins/python-build/bin/pyenv-install
@@ -256,7 +256,6 @@ for DEFINITION in "${DEFINITIONS[@]}"; do
   # Display a more helpful message if the definition wasn't found.
   if [ "$STATUS" == "2" ]; then
     { candidates="$(definitions "$DEFINITION")"
-      here="$(dirname "${0%/*}")/../.."
       if [ -n "$candidates" ]; then
         echo
         echo "The following versions contain \`$DEFINITION' in the name:"
@@ -266,12 +265,12 @@ for DEFINITION in "${DEFINITIONS[@]}"; do
       echo "See all available versions with \`pyenv install --list'."
       echo
       echo -n "If the version you need is missing, try upgrading pyenv"
-      if [ "$here" != "${here#$(brew --prefix 2>/dev/null)}" ]; then
+      if [ "${PYENV_INSTALL_PATH}" != "${PYENV_INSTALL_PATH#$(brew --prefix 2>/dev/null)}" ]; then
         printf ":\n\n"
         echo "  brew update && brew upgrade pyenv"
-      elif [ -d "${here}/.git" ]; then
+      elif [ -d "${PYENV_INSTALL_PATH}/.git" ]; then
         printf ":\n\n"
-        echo "  cd ${here} && git pull && cd -"
+        echo "  cd ${PYENV_INSTALL_PATH} && git pull && cd -"
       else
         printf ".\n"
       fi
diff --git a/plugins/python-build/test/pyenv.bats b/plugins/python-build/test/pyenv.bats
index f3b3c617..7e4032aa 100644
--- a/plugins/python-build/test/pyenv.bats
+++ b/plugins/python-build/test/pyenv.bats
@@ -140,7 +140,8 @@ OUT
   stub_python_build 'echo ERROR >&2 && exit 2'
   stub_python_build "--definitions : echo 2.6.9 2.7.9-rc1 2.7.9-rc2 3.4.2 | tr ' ' $'\\n'"
 
-  run pyenv-install 2.7.9
+  mkdir "$BATS_TEST_TMPDIR/.git"
+  PYENV_INSTALL_PATH="$BATS_TEST_TMPDIR" run pyenv-install 2.7.9
   assert_failure
   assert_output <<OUT
 ERROR
@@ -153,19 +154,19 @@ See all available versions with \`pyenv install --list'.
 
 If the version you need is missing, try upgrading pyenv:
 
-  cd ${BATS_TEST_DIRNAME}/../../.. && git pull && cd -
+  cd ${BATS_TEST_TMPDIR} && git pull && cd -
 OUT
 
   unstub python-build
 }
 
 @test "homebrew upgrade instructions given when pyenv is homebrew-installed" {
-  stub brew "--prefix : echo '${BATS_TEST_DIRNAME%/*}'"
+  stub brew "--prefix : echo '${BATS_TEST_TMPDIR}'"
   stub_python_build_lib
   stub_python_build 'echo ERROR >&2 && exit 2' \
     "--definitions : true"
 
-  run pyenv-install 1.9.3
+  PYENV_INSTALL_PATH="$BATS_TEST_TMPDIR" run pyenv-install 1.9.3
   assert_failure
   assert_output <<OUT
 ERROR
diff --git a/test/--version.bats b/test/--version.bats
index 51f68802..9e469345 100644
--- a/test/--version.bats
+++ b/test/--version.bats
@@ -3,7 +3,7 @@
 load test_helper
 
 _setup() {
-  export GIT_DIR="${PYENV_TEST_DIR}/.git"
+  export GIT_DIR="${HOME}/.git"
   mkdir -p "$HOME"
   git config --global user.name  "Tester"
   git config --global user.email "tester@test.local"
diff --git a/test/init.bats b/test/init.bats
index f5355591..9463ab75 100755
--- a/test/init.bats
+++ b/test/init.bats
@@ -37,7 +37,7 @@ create_executable() {
 
 @test "setup shell completions" {
   exec_root="$(cd $BATS_TEST_DIRNAME/.. && pwd)"
-  run pyenv-init - bash
+  PYENV_INSTALL_PATH="${exec_root}" run pyenv-init - bash
   assert_success
   assert_line "source '${exec_root}/completions/pyenv.bash'"
 }
@@ -63,7 +63,7 @@ OUT
 
 @test "setup shell completions (fish)" {
   exec_root="$(cd $BATS_TEST_DIRNAME/.. && pwd)"
-  run pyenv-init - fish
+  PYENV_INSTALL_PATH="${exec_root}" run pyenv-init - fish
   assert_success
   assert_line "source '${exec_root}/completions/pyenv.fish'"
 }
diff --git a/test/test_helper.bash b/test/test_helper.bash
index 0a760b2f..5d703a19 100644
--- a/test/test_helper.bash
+++ b/test/test_helper.bash
@@ -19,6 +19,7 @@ setup() {
   export BATS_TEST_TMPDIR="${bats_test_tmpdir}"
   export PYENV_TEST_DIR="${BATS_TEST_TMPDIR}/pyenv"
   export PYENV_ROOT="${PYENV_TEST_DIR}/root"
+  export PYENV_INSTALL_PATH="${PYENV_TEST_DIR}"
   export HOME="${PYENV_TEST_DIR}/home"
   export PYENV_HOOK_PATH="${PYENV_ROOT}/pyenv.d"