[tor-commits] [chutney/master] If $PYTHON isn't set, use python2 or python

[nickm at torproject.org]

commit 2a3b01ff68b99119689fb7d36ca60f62c810df2c
Author: teor (Tim Wilson-Brown) <teor2345 at gmail.com>
Date:   Thu Aug 27 10:35:37 2015 +1000

    If $PYTHON isn't set, use python2 or python
    
    If $PYTHON isn't set, use "command" to check for python2, then python.
    (python3 check is disabled due to #16904 - chutney doesn't work with
    python3.)
    
    If neither of the "command" checks work, assume a strange shell or "command",
    and fall back to python2.
    
    Fixes default install of chutney on OS X, which has neither $PYTHON set,
    nor python2; but does have python, which happens to be version 2.
    
    Resolves #16902.
---
 chutney |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/chutney b/chutney
index 4a26464..cbbc673 100755
--- a/chutney
+++ b/chutney
@@ -1,4 +1,12 @@
 #!/bin/sh
 
 export PYTHONPATH="`dirname $0`/lib:${PYTHONPATH}"
+# Use python2, python, python3 in that order
+[ -n "$PYTHON" ] || {
+    command -v python2 >/dev/null 2>&1 && PYTHON=python2 || \
+    command -v python >/dev/null 2>&1 && PYTHON=python # || \
+#   Not yet supported 
+#   command -v python3 >/dev/null 2>&1 && PYTHON=python3
+}
+# Use python2 if the checks that use "command" fail
 ${PYTHON:=python2} -m chutney.TorNet "$@"