diff --git a/.scripts/run_osx_build.sh b/.scripts/run_osx_build.sh
index 361edeb2c..bac7141a9 100755
--- a/.scripts/run_osx_build.sh
+++ b/.scripts/run_osx_build.sh
@@ -63,6 +63,25 @@ if [[ "${sha:-}" == "" ]]; then
   sha=$(git rev-parse HEAD)
 fi
 
+if [[ "${OSX_SDK_DIR:-}" == "" ]]; then
+  if [[ "${CI:-}" == "" ]]; then
+    echo "Please set OSX_SDK_DIR to a directory where SDKs can be downloaded to. Aborting"
+    exit 1
+  else
+    export OSX_SDK_DIR=/opt/conda-sdks
+    /usr/bin/sudo mkdir -p "${OSX_SDK_DIR}"
+    /usr/bin/sudo chown "${USER}" "${OSX_SDK_DIR}"
+  fi
+else
+  if tmpf=$(mktemp -p "$OSX_SDK_DIR" tmp.XXXXXXXX 2>/dev/null); then
+      rm -f "$tmpf"
+      echo "OSX_SDK_DIR is writeable without sudo, continuing"
+  else
+      echo "User-provided OSX_SDK_DIR is not writeable for current user! Aborting"
+      exit 1
+  fi
+fi
+
 echo -e "\n\nRunning the build setup script."
 source run_conda_forge_build_setup
 
diff --git a/recipe/build_base.bat b/recipe/build_base.bat
index 59471bcac..9cf7a19ef 100644
--- a/recipe/build_base.bat
+++ b/recipe/build_base.bat
@@ -181,6 +181,9 @@ if errorlevel 1 exit 1
 if "%_D%" neq "" copy %PREFIX%\python%_D%.exe %PREFIX%\python.exe
 if "%EXE_T%" neq "" copy %PREFIX%\python%EXE_T%.exe %PREFIX%\python.exe
 
+:: Provide a python3 alias
+copy %PREFIX%\python.exe %PREFIX%\python3.exe
+
 :: bytecode compile the standard library
 %PREFIX%\python.exe -Wi %PREFIX%\Lib\compileall.py -f -q -x "bad_coding|badsyntax|py2_" %PREFIX%\Lib
 if errorlevel 1 exit 1
@@ -208,3 +211,8 @@ echo "Testing import of _sqlite3 (DLL located via PATH needed) does not print: T
 %PREFIX%\python.exe -v -c "import _sqlite3" 2>&1
 %PREFIX%\python.exe -v -c "import _sqlite3" 2>&1 | findstr /r /c:"The specified module could not be found"
 if %errorlevel% neq 1 exit /b 1
+
+:: Also check python3 alias
+echo "Testing print() does not print: Hello with python3"
+%CONDA_EXE% run -p %PREFIX% cd %PREFIX% & %PREFIX%\python3.exe -c "print()" 2>&1 | findstr /r /c:"Hello"
+if %errorlevel% neq 1 exit /b 1
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 1b26b7a00..17b8d6e7b 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -4,7 +4,7 @@
 {% set ver2 = '.'.join(version.split('.')[0:2]) %}
 {% set ver2nd = ''.join(version.split('.')[0:2]) %}
 {% set ver3nd = ''.join(version.split('.')[0:3]) %}
-{% set build_number = 0 %}
+{% set build_number = 1 %}
 
 # this makes the linter happy
 {% set channel_targets = channel_targets or 'conda-forge main' %}