diff --git a/plugins/python-build/test/build.bats b/plugins/python-build/test/build.bats
index 611166cc..300dbd7d 100644
--- a/plugins/python-build/test/build.bats
+++ b/plugins/python-build/test/build.bats
@@ -406,6 +406,9 @@ OUT
   stub port "-q installed readline : echo '  readline @8.2.013_0 (active)'"
   for i in {1..2}; do stub port false; done
   stub_make_install
+  export PYTHON_BUILD_SKIP_HOMEBREW=1
+  PORT_PREFIX="$(which port)"
+  PORT_PREFIX="${PORT_PREFIX%/bin/port}"
 
   run_inline_definition <<DEF
 install_package "Python-3.6.2" "http://python.org/ftp/python/3.6.2/Python-3.6.2.tar.gz"
@@ -434,6 +437,9 @@ OUT
   stub port "-q installed ncurses : echo '$ncurses_libdir'"
   stub port false
   stub_make_install
+  export PYTHON_BUILD_SKIP_HOMEBREW=1
+  PORT_PREFIX="$(which port)"
+  PORT_PREFIX="${PORT_PREFIX%/bin/port}"
 
   run_inline_definition <<DEF
 install_package "Python-3.6.2" "http://python.org/ftp/python/3.6.2/Python-3.6.2.tar.gz"
@@ -848,6 +854,7 @@ OUT
 
   stub uname '-s : echo Darwin'
   stub sw_vers '-productVersion : echo 10.10'
+  for i in {1..6}; do stub brew false; done
 
   stub sysctl false
   stub_make_install
@@ -860,6 +867,7 @@ DEF
 
   unstub uname
   unstub sw_vers
+  unstub brew
   unstub make
 
   assert_build_log <<OUT
@@ -875,6 +883,7 @@ OUT
 
   stub uname '-s : echo Darwin'
   stub sw_vers '-productVersion : echo 10.10'
+  for i in {1..6}; do stub brew false; done
 
   stub sysctl '-n hw.ncpu : echo 4'
   stub_make_install
@@ -887,6 +896,7 @@ DEF
 
   unstub uname
   unstub sw_vers
+  unstub brew
   unstub sysctl
   unstub make
 
diff --git a/plugins/python-build/test/test_helper.bash b/plugins/python-build/test/test_helper.bash
index 1278af68..82321e58 100644
--- a/plugins/python-build/test/test_helper.bash
+++ b/plugins/python-build/test/test_helper.bash
@@ -26,7 +26,7 @@ stub() {
   export "${prefix}_STUB_END"=
 
   mkdir -p "${BATS_TEST_TMPDIR}/bin"
-  ln -sf "${BATS_TEST_DIRNAME}/stubs/stub" "${BATS_TEST_TMPDIR}/bin/${program}"
+  cp "${BATS_TEST_DIRNAME}/stubs/stub" "${BATS_TEST_TMPDIR}/bin/${program}"
 
   touch "${BATS_TEST_TMPDIR}/${program}-stub-plan"
   for arg in "$@"; do printf "%s\n" "$arg" >> "${BATS_TEST_TMPDIR}/${program}-stub-plan"; done