PYTHONHASSEED

in the configure script in the src of: nixpkgs/9b09bde6e3fc9493b6a8b2a5702ac87c66505c64#pkgsStatic.talloc - rel: talloc

#!/bin/sh
 
PREVPATH=$(dirname $0)
 
if [ -f $PREVPATH/../../buildtools/bin/waf ]; then
        WAF=../../buildtools/bin/waf
elif [ -f $PREVPATH/buildtools/bin/waf ]; then
        WAF=./buildtools/bin/waf
else
        echo "replace: Unable to find waf"
        exit 1
fi
 
# using JOBS=1 gives maximum compatibility with
# systems like AIX which have broken threading in python
JOBS=1
export JOBS
 
# Make sure we don't have any library preloaded.
unset LD_PRELOAD
 
# Make sure we get stable hashes
PYTHONHASHSEED=1
export PYTHONHASHSEED
 
cd . || exit 1
$PYTHON $WAF configure "$@" || exit 1
cd $PREVPATH

https://stackoverflow.com/questions/30585108/disable-hash-randomization-from-within-python-program

• hashing alg is salted
• Every time I run my script, dict contents are iterated in a different order.